Report for 72

Name

SCHLUMBERGER-AS - Schlumberger Limited, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS4637) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

72 SCHLUMBERGER-AS Schlumberger Limited

  Adjacency:     8  Upstream:     8  Downstream:     0
  Upstream Adjacent AS list
    AS1273    CW Cable & Wireless
    AS174     COGENT Cogent/PSI
    AS6395    BROADWING - Broadwing Communications Services, Inc.
    AS7018    ATT-INTERNET4 - AT&T WorldNet Services
    AS3216    SOVAM-AS Golden Telecom, Moscow, Russia
    AS4323    TWTC - Time Warner Telecom, Inc.
    AS4755    VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
    AS9911    CONNECTPLUS-AP Singapore Telecom

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
276   AS72     ORIGIN  Originate:     979712 /12.10  Transit:          0 /0.00  SCHLUMBERGER-AS Schlumberger Limited

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
  214 AS72    SCHLUMBERGER-AS Schlumberger Limited        177    100     34    111     66  37.29%


  Prefix               AS Path                              Aggregation Suggestion
  128.58.0.0/16        4637 4323 72 72        
  129.87.0.0/16        4637 4323 72 72        
  134.32.0.0/16        4637 1273 72           
  136.249.0.0/16       4637 1273 72           
  136.250.0.0/16       4637 1273 72           
  136.251.0.0/16       4637 4323 72 72        
  136.253.0.0/16       4637 7473 9911 72      
  136.253.128.0/18     4637 1273 72         + Announce - aggregate of 136.253.128.0/19 (4637 1273 72) and 136.253.160.0/19 (4637 1273 72)
  136.253.128.0/19     4637 1273 72         - Withdrawn - aggregated with 136.253.160.0/19 (4637 1273 72)
  136.253.160.0/19     4637 1273 72         - Withdrawn - aggregated with 136.253.128.0/19 (4637 1273 72)
  137.144.0.0/16       4637 4323 72 72        
  163.183.0.0/16       4637 1273 72           
  163.184.0.0/16       4637 7473 9911 72      
  163.185.0.0/16       4637 4323 72 72        
  163.186.0.0/16       4637 4323 72 72        
  163.187.0.0/16       4637 1273 72           
  163.188.0.0/16       4637 4323 72 72        
  192.12.34.0/23       4637 1273 72           
  192.12.42.0/24       4637 1273 72           
  192.23.1.0/24        4637 1273 72           
  192.23.8.0/22        4637 1273 72         + Announce - aggregate of 192.23.8.0/23 (4637 1273 72) and 192.23.10.0/23 (4637 1273 72)
  192.23.8.0/23        4637 1273 72         - Withdrawn - aggregated with 192.23.10.0/23 (4637 1273 72)
  192.23.10.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.11.0/24 (4637 1273 72)
  192.23.11.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.10.0/24 (4637 1273 72)
  192.23.13.0/24       4637 1273 72           
  192.23.16.0/22       4637 1273 72         + Announce - aggregate of 192.23.16.0/23 (4637 1273 72) and 192.23.18.0/23 (4637 1273 72)
  192.23.16.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.17.0/24 (4637 1273 72)
  192.23.17.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.16.0/24 (4637 1273 72)
  192.23.18.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.19.0/24 (4637 1273 72)
  192.23.19.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.18.0/24 (4637 1273 72)
  192.23.20.0/23       4637 1273 72         + Announce - aggregate of 192.23.20.0/24 (4637 1273 72) and 192.23.21.0/24 (4637 1273 72)
  192.23.20.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.21.0/24 (4637 1273 72)
  192.23.21.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.20.0/24 (4637 1273 72)
  192.23.23.0/24       4637 1273 72           
  192.23.24.0/23       4637 1273 72         + Announce - aggregate of 192.23.24.0/24 (4637 1273 72) and 192.23.25.0/24 (4637 1273 72)
  192.23.24.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.25.0/24 (4637 1273 72)
  192.23.25.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.24.0/24 (4637 1273 72)
  192.23.26.0/24       4637 1273 72           
  192.23.29.0/24       4637 3549 3216 72      
  192.23.32.0/24       4637 4323 72 72        
  192.23.34.0/23       4637 1273 72         + Announce - aggregate of 192.23.34.0/24 (4637 1273 72) and 192.23.35.0/24 (4637 1273 72)
  192.23.34.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.35.0/24 (4637 1273 72)
  192.23.35.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.34.0/24 (4637 1273 72)
  192.23.36.0/24       4637 1273 72           
  192.23.42.0/24       4637 4323 72 72        
  192.23.44.0/24       4637 4323 72 72        
  192.23.50.0/23       4637 4323 72 72      + Announce - aggregate of 192.23.50.0/24 (4637 4323 72 72) and 192.23.51.0/24 (4637 4323 72 72)
  192.23.50.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.51.0/24 (4637 4323 72 72)
  192.23.51.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.50.0/24 (4637 4323 72 72)
  192.23.53.0/24       4637 1273 72           
  192.23.54.0/24       4637 1273 72           
  192.23.56.0/23       4637 1273 72         + Announce - aggregate of 192.23.56.0/24 (4637 1273 72) and 192.23.57.0/24 (4637 1273 72)
  192.23.56.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.57.0/24 (4637 1273 72)
  192.23.57.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.56.0/24 (4637 1273 72)
  192.23.58.0/24       4637 7473 9911 72      
  192.23.59.0/24       4637 1273 72           
  192.23.60.0/23       4637 1273 72         + Announce - aggregate of 192.23.60.0/24 (4637 1273 72) and 192.23.61.0/24 (4637 1273 72)
  192.23.60.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.61.0/24 (4637 1273 72)
  192.23.61.0/24       4637 1273 72         - Withdrawn - aggregated with 192.23.60.0/24 (4637 1273 72)
  192.23.62.0/24       4637 4323 72 72        
  192.23.65.0/24       4637 4323 72 72        
  192.23.66.0/24       4637 174 72            
  192.23.67.0/24       4637 4323 72 72        
  192.23.68.0/23       4637 4323 72 72      + Announce - aggregate of 192.23.68.0/24 (4637 4323 72 72) and 192.23.69.0/24 (4637 4323 72 72)
  192.23.68.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.69.0/24 (4637 4323 72 72)
  192.23.69.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.68.0/24 (4637 4323 72 72)
  192.23.75.0/24       4637 4323 72 72        
  192.23.76.0/24       4637 4323 72 72        
  192.23.79.0/24       4637 4323 72 72        
  192.23.80.0/24       4637 174 72            
  192.23.81.0/24       4637 4323 72 72        
  192.23.82.0/23       4637 4323 72 72      + Announce - aggregate of 192.23.82.0/24 (4637 4323 72 72) and 192.23.83.0/24 (4637 4323 72 72)
  192.23.82.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.83.0/24 (4637 4323 72 72)
  192.23.83.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.82.0/24 (4637 4323 72 72)
  192.23.84.0/22       4637 4323 72 72      + Announce - aggregate of 192.23.84.0/23 (4637 4323 72 72) and 192.23.86.0/23 (4637 4323 72 72)
  192.23.84.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.85.0/24 (4637 4323 72 72)
  192.23.85.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.84.0/24 (4637 4323 72 72)
  192.23.86.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.87.0/24 (4637 4323 72 72)
  192.23.87.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.86.0/24 (4637 4323 72 72)
  192.23.88.0/24       4637 4323 72 72        
  192.23.92.0/23       4637 4323 72 72      + Announce - aggregate of 192.23.92.0/24 (4637 4323 72 72) and 192.23.93.0/24 (4637 4323 72 72)
  192.23.92.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.93.0/24 (4637 4323 72 72)
  192.23.93.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.92.0/24 (4637 4323 72 72)
  192.23.94.0/24       4637 4323 72 72        
  192.23.95.0/24       4637 1273 72           
  192.23.96.0/23       4637 4323 72 72      + Announce - aggregate of 192.23.96.0/24 (4637 4323 72 72) and 192.23.97.0/24 (4637 4323 72 72)
  192.23.96.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.97.0/24 (4637 4323 72 72)
  192.23.97.0/24       4637 4323 72 72      - Withdrawn - aggregated with 192.23.96.0/24 (4637 4323 72 72)
  192.23.103.0/24      4637 4323 72 72        
  192.23.104.0/23      4637 4323 72 72      + Announce - aggregate of 192.23.104.0/24 (4637 4323 72 72) and 192.23.105.0/24 (4637 4323 72 72)
  192.23.104.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.105.0/24 (4637 4323 72 72)
  192.23.105.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.104.0/24 (4637 4323 72 72)
  192.23.106.0/24      4637 3491 3561 7018 72   
  192.23.108.0/23      4637 4323 72 72      + Announce - aggregate of 192.23.108.0/24 (4637 4323 72 72) and 192.23.109.0/24 (4637 4323 72 72)
  192.23.108.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.109.0/24 (4637 4323 72 72)
  192.23.109.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.108.0/24 (4637 4323 72 72)
  192.23.110.0/24      4637 4323 72 72        
  192.23.113.0/24      4637 4323 72 72        
  192.23.114.0/24      4637 4323 72 72        
  192.23.119.0/24      4637 4323 72 72        
  192.23.120.0/23      4637 4323 72 72      + Announce - aggregate of 192.23.120.0/24 (4637 4323 72 72) and 192.23.121.0/24 (4637 4323 72 72)
  192.23.120.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.121.0/24 (4637 4323 72 72)
  192.23.121.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.120.0/24 (4637 4323 72 72)
  192.23.123.0/24      4637 4323 72 72        
  192.23.124.0/23      4637 4323 72 72      + Announce - aggregate of 192.23.124.0/24 (4637 4323 72 72) and 192.23.125.0/24 (4637 4323 72 72)
  192.23.124.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.125.0/24 (4637 4323 72 72)
  192.23.125.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.124.0/24 (4637 4323 72 72)
  192.23.127.0/24      4637 4323 72 72        
  192.23.128.0/23      4637 3491 3561 7018 72 + Announce - aggregate of 192.23.128.0/24 (4637 3491 3561 7018 72) and 192.23.129.0/24 (4637 3491 3561 7018 72)
  192.23.128.0/24      4637 3491 3561 7018 72 - Withdrawn - aggregated with 192.23.129.0/24 (4637 3491 3561 7018 72)
  192.23.129.0/24      4637 3491 3561 7018 72 - Withdrawn - aggregated with 192.23.128.0/24 (4637 3491 3561 7018 72)
  192.23.130.0/23      4637 1273 72         + Announce - aggregate of 192.23.130.0/24 (4637 1273 72) and 192.23.131.0/24 (4637 1273 72)
  192.23.130.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.131.0/24 (4637 1273 72)
  192.23.131.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.130.0/24 (4637 1273 72)
  192.23.132.0/23      4637 1273 72         + Announce - aggregate of 192.23.132.0/24 (4637 1273 72) and 192.23.133.0/24 (4637 1273 72)
  192.23.132.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.133.0/24 (4637 1273 72)
  192.23.133.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.132.0/24 (4637 1273 72)
  192.23.134.0/24      4637 1273 72           
  192.23.135.0/24      4637 7473 9911 72      
  192.23.136.0/23      4637 1273 72         + Announce - aggregate of 192.23.136.0/24 (4637 1273 72) and 192.23.137.0/24 (4637 1273 72)
  192.23.136.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.137.0/24 (4637 1273 72)
  192.23.137.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.136.0/24 (4637 1273 72)
  192.23.138.0/24      4637 1273 72           
  192.23.143.0/24      4637 1273 72           
  192.23.145.0/24      4637 1273 72           
  192.23.147.0/24      4637 1273 72           
  192.23.150.0/24      4637 3491 3561 7018 72   
  192.23.156.0/24      4637 4323 72 72        
  192.23.162.0/23      4637 7473 9911 72    + Announce - aggregate of 192.23.162.0/24 (4637 7473 9911 72) and 192.23.163.0/24 (4637 7473 9911 72)
  192.23.162.0/24      4637 7473 9911 72    - Withdrawn - aggregated with 192.23.163.0/24 (4637 7473 9911 72)
  192.23.163.0/24      4637 7473 9911 72    - Withdrawn - aggregated with 192.23.162.0/24 (4637 7473 9911 72)
  192.23.164.0/23      4637 4323 72 72      + Announce - aggregate of 192.23.164.0/24 (4637 4323 72 72) and 192.23.165.0/24 (4637 4323 72 72)
  192.23.164.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.165.0/24 (4637 4323 72 72)
  192.23.165.0/24      4637 4323 72 72      - Withdrawn - aggregated with 192.23.164.0/24 (4637 4323 72 72)
  192.23.180.0/24      4637 4323 72 72        
  192.23.182.0/24      4637 4323 72 72        
  192.23.183.0/24      4637 1273 72           
  192.23.184.0/24      4637 1273 72           
  192.23.190.0/24      4637 6453 4755 72      
  192.23.193.0/24      4637 1273 72           
  192.23.194.0/23      4637 1273 72         + Announce - aggregate of 192.23.194.0/24 (4637 1273 72) and 192.23.195.0/24 (4637 1273 72)
  192.23.194.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.195.0/24 (4637 1273 72)
  192.23.195.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.194.0/24 (4637 1273 72)
  192.23.197.0/24      4637 1273 72           
  192.23.198.0/23      4637 1273 72         + Announce - aggregate of 192.23.198.0/24 (4637 1273 72) and 192.23.199.0/24 (4637 1273 72)
  192.23.198.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.199.0/24 (4637 1273 72)
  192.23.199.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.198.0/24 (4637 1273 72)
  192.23.200.0/21      4637 1273 72         + Announce - aggregate of 192.23.200.0/22 (4637 1273 72) and 192.23.204.0/22 (4637 1273 72)
  192.23.200.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.201.0/24 (4637 1273 72)
  192.23.201.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.200.0/24 (4637 1273 72)
  192.23.202.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.203.0/24 (4637 1273 72)
  192.23.203.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.202.0/24 (4637 1273 72)
  192.23.204.0/22      4637 1273 72         - Withdrawn - aggregated with 192.23.200.0/22 (4637 1273 72)
  192.23.204.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.204.0/22 4637 1273 72
  192.23.205.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.204.0/22 4637 1273 72
  192.23.207.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.204.0/22 4637 1273 72
  192.23.208.0/20      4637 1273 72         + Announce - aggregate of 192.23.208.0/21 (4637 1273 72) and 192.23.216.0/21 (4637 1273 72)
  192.23.208.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.209.0/24 (4637 1273 72)
  192.23.209.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.208.0/24 (4637 1273 72)
  192.23.210.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.211.0/24 (4637 1273 72)
  192.23.211.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.210.0/24 (4637 1273 72)
  192.23.212.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.213.0/24 (4637 1273 72)
  192.23.213.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.212.0/24 (4637 1273 72)
  192.23.214.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.215.0/24 (4637 1273 72)
  192.23.215.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.214.0/24 (4637 1273 72)
  192.23.216.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.217.0/24 (4637 1273 72)
  192.23.217.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.216.0/24 (4637 1273 72)
  192.23.218.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.219.0/24 (4637 1273 72)
  192.23.219.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.218.0/24 (4637 1273 72)
  192.23.220.0/22      4637 1273 72         - Withdrawn - aggregated with 192.23.216.0/22 (4637 1273 72)
  192.23.221.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.220.0/22 4637 1273 72
  192.23.222.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.220.0/22 4637 1273 72
  192.23.223.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.220.0/22 4637 1273 72
  192.23.224.0/21      4637 1273 72           
  192.23.225.0/24      4637 1273 72 72 72 72 72 72 72 72 72   
  192.23.226.0/24      4637 1273 72         - Withdrawn - matching aggregate 192.23.224.0/21 4637 1273 72
  192.23.227.0/24      4637 1273 72 72 72 72 72 72 72 72 72   
  192.23.228.0/23      4637 1273 72 72 72 72 72 72 72 72 72 + Announce - aggregate of 192.23.228.0/24 (4637 1273 72 72 72 72 72 72 72 72 72) and 192.23.229.0/24 (4637 1273 72 72 72 72 72 72 72 72 72)
  192.23.228.0/24      4637 1273 72 72 72 72 72 72 72 72 72 - Withdrawn - aggregated with 192.23.229.0/24 (4637 1273 72 72 72 72 72 72 72 72 72)
  192.23.229.0/24      4637 1273 72 72 72 72 72 72 72 72 72 - Withdrawn - aggregated with 192.23.228.0/24 (4637 1273 72 72 72 72 72 72 72 72 72)
  192.23.232.0/22      4637 1273 72         + Announce - aggregate of 192.23.232.0/23 (4637 1273 72) and 192.23.234.0/23 (4637 1273 72)
  192.23.232.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.233.0/24 (4637 1273 72)
  192.23.233.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.232.0/24 (4637 1273 72)
  192.23.234.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.235.0/24 (4637 1273 72)
  192.23.235.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.234.0/24 (4637 1273 72)
  192.23.237.0/24      4637 1273 72           
  192.23.238.0/24      4637 4323 72 72        
  192.23.239.0/24      4637 1273 72           
  192.23.240.0/22      4637 1273 72         + Announce - aggregate of 192.23.240.0/23 (4637 1273 72) and 192.23.242.0/23 (4637 1273 72)
  192.23.240.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.241.0/24 (4637 1273 72)
  192.23.241.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.240.0/24 (4637 1273 72)
  192.23.242.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.243.0/24 (4637 1273 72)
  192.23.243.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.242.0/24 (4637 1273 72)
  192.23.244.0/23      4637 1273 72         + Announce - aggregate of 192.23.244.0/24 (4637 1273 72) and 192.23.245.0/24 (4637 1273 72)
  192.23.244.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.245.0/24 (4637 1273 72)
  192.23.245.0/24      4637 1273 72         - Withdrawn - aggregated with 192.23.244.0/24 (4637 1273 72)
  192.23.246.0/24      4637 1273 72           
  192.23.251.0/24      4637 4323 72 72        
  199.6.192.0/22       4637 1273 72           
  204.17.157.0/24      4637 4323 72 72        
  204.17.158.0/23      4637 4323 72 72      + Announce - aggregate of 204.17.158.0/24 (4637 4323 72 72) and 204.17.159.0/24 (4637 4323 72 72)
  204.17.158.0/24      4637 4323 72 72      - Withdrawn - aggregated with 204.17.159.0/24 (4637 4323 72 72)
  204.17.159.0/24      4637 4323 72 72      - Withdrawn - aggregated with 204.17.158.0/24 (4637 4323 72 72)
  204.17.160.0/24      4637 3356 6395 72      
  204.17.161.0/24      4637 4323 72 72        
  204.17.162.0/24      4637 4323 72 72        
  205.153.228.0/22     4637 4323 72 72      + Announce - aggregate of 205.153.228.0/23 (4637 4323 72 72) and 205.153.230.0/23 (4637 4323 72 72)
  205.153.228.0/24     4637 4323 72 72      - Withdrawn - aggregated with 205.153.229.0/24 (4637 4323 72 72)
  205.153.229.0/24     4637 4323 72 72      - Withdrawn - aggregated with 205.153.228.0/24 (4637 4323 72 72)
  205.153.230.0/24     4637 4323 72 72      - Withdrawn - aggregated with 205.153.231.0/24 (4637 4323 72 72)
  205.153.231.0/24     4637 4323 72 72      - Withdrawn - aggregated with 205.153.230.0/24 (4637 4323 72 72)

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS72   163 More Specifics   174 Total Advertisements   SCHLUMBERGER-AS Schlumberger Limited
    136.250.0.0/16                136.250.0.0/15
    136.251.0.0/16                136.250.0.0/15
    136.252.0.0/21                136.252.0.0/15
    136.253.0.0/16                136.252.0.0/15
    136.253.128.0/19              136.252.0.0/15
    136.253.160.0/19              136.252.0.0/15
    163.184.0.0/16                163.184.0.0/14
    163.185.0.0/16                163.184.0.0/14
    163.186.0.0/16                163.184.0.0/14
    163.187.0.0/16                163.184.0.0/14
    192.23.1.0/24                 192.23.0.0/16
    192.23.8.0/23                 192.23.0.0/16
    192.23.10.0/24                192.23.0.0/16
    192.23.11.0/24                192.23.0.0/16
    192.23.13.0/24                192.23.0.0/16
    192.23.16.0/24                192.23.0.0/16
    192.23.17.0/24                192.23.0.0/16
    192.23.18.0/24                192.23.0.0/16
    192.23.19.0/24                192.23.0.0/16
    192.23.20.0/24                192.23.0.0/16
    192.23.21.0/24                192.23.0.0/16
    192.23.23.0/24                192.23.0.0/16
    192.23.24.0/24                192.23.0.0/16
    192.23.25.0/24                192.23.0.0/16
    192.23.26.0/24                192.23.0.0/16
    192.23.32.0/24                192.23.0.0/16
    192.23.34.0/24                192.23.0.0/16
    192.23.35.0/24                192.23.0.0/16
    192.23.36.0/24                192.23.0.0/16
    192.23.42.0/24                192.23.0.0/16
    192.23.44.0/24                192.23.0.0/16
    192.23.50.0/24                192.23.0.0/16
    192.23.51.0/24                192.23.0.0/16
    192.23.53.0/24                192.23.0.0/16
    192.23.54.0/24                192.23.0.0/16
    192.23.56.0/24                192.23.0.0/16
    192.23.57.0/24                192.23.0.0/16
    192.23.58.0/24                192.23.0.0/16
    192.23.59.0/24                192.23.0.0/16
    192.23.60.0/24                192.23.0.0/16
    192.23.61.0/24                192.23.0.0/16
    192.23.62.0/24                192.23.0.0/16
    192.23.65.0/24                192.23.0.0/16
    192.23.66.0/24                192.23.0.0/16
    192.23.67.0/24                192.23.0.0/16
    192.23.68.0/24                192.23.0.0/16
    192.23.69.0/24                192.23.0.0/16
    192.23.75.0/24                192.23.0.0/16
    192.23.76.0/24                192.23.0.0/16
    192.23.79.0/24                192.23.0.0/16
    192.23.80.0/24                192.23.0.0/16
    192.23.81.0/24                192.23.0.0/16
    192.23.82.0/24                192.23.0.0/16
    192.23.83.0/24                192.23.0.0/16
    192.23.84.0/24                192.23.0.0/16
    192.23.85.0/24                192.23.0.0/16
    192.23.86.0/24                192.23.0.0/16
    192.23.87.0/24                192.23.0.0/16
    192.23.88.0/24                192.23.0.0/16
    192.23.92.0/24                192.23.0.0/16
    192.23.93.0/24                192.23.0.0/16
    192.23.94.0/24                192.23.0.0/16
    192.23.95.0/24                192.23.0.0/16
    192.23.96.0/24                192.23.0.0/16
    192.23.103.0/24               192.23.0.0/16
    192.23.104.0/24               192.23.0.0/16
    192.23.105.0/24               192.23.0.0/16
    192.23.106.0/24               192.23.0.0/16
    192.23.108.0/24               192.23.0.0/16
    192.23.109.0/24               192.23.0.0/16
    192.23.110.0/24               192.23.0.0/16
    192.23.113.0/24               192.23.0.0/16
    192.23.114.0/24               192.23.0.0/16
    192.23.119.0/24               192.23.0.0/16
    192.23.120.0/24               192.23.0.0/16
    192.23.121.0/24               192.23.0.0/16
    192.23.123.0/24               192.23.0.0/16
    192.23.127.0/24               192.23.0.0/16
    192.23.128.0/24               192.23.0.0/16
    192.23.129.0/24               192.23.0.0/16
    192.23.130.0/24               192.23.0.0/16
    192.23.131.0/24               192.23.0.0/16
    192.23.132.0/24               192.23.0.0/16
    192.23.133.0/24               192.23.0.0/16
    192.23.134.0/24               192.23.0.0/16
    192.23.135.0/24               192.23.0.0/16
    192.23.136.0/24               192.23.0.0/16
    192.23.137.0/24               192.23.0.0/16
    192.23.138.0/24               192.23.0.0/16
    192.23.142.0/24               192.23.0.0/16
    192.23.143.0/24               192.23.0.0/16
    192.23.145.0/24               192.23.0.0/16
    192.23.147.0/24               192.23.0.0/16
    192.23.150.0/24               192.23.0.0/16
    192.23.156.0/24               192.23.0.0/16
    192.23.162.0/24               192.23.0.0/16
    192.23.163.0/24               192.23.0.0/16
    192.23.164.0/24               192.23.0.0/16
    192.23.165.0/24               192.23.0.0/16
    192.23.180.0/24               192.23.0.0/16
    192.23.182.0/24               192.23.0.0/16
    192.23.183.0/24               192.23.0.0/16
    192.23.184.0/24               192.23.0.0/16
    192.23.190.0/24               192.23.0.0/16
    192.23.193.0/24               192.23.0.0/16
    192.23.194.0/24               192.23.0.0/16
    192.23.195.0/24               192.23.0.0/16
    192.23.197.0/24               192.23.0.0/16
    192.23.198.0/24               192.23.0.0/16
    192.23.199.0/24               192.23.0.0/16
    192.23.200.0/24               192.23.0.0/16
    192.23.201.0/24               192.23.0.0/16
    192.23.202.0/24               192.23.0.0/16
    192.23.203.0/24               192.23.0.0/16
    192.23.204.0/24               192.23.0.0/16
    192.23.205.0/24               192.23.0.0/16
    192.23.207.0/24               192.23.0.0/16
    192.23.208.0/24               192.23.0.0/16
    192.23.209.0/24               192.23.0.0/16
    192.23.210.0/24               192.23.0.0/16
    192.23.211.0/24               192.23.0.0/16
    192.23.212.0/24               192.23.0.0/16
    192.23.213.0/24               192.23.0.0/16
    192.23.214.0/24               192.23.0.0/16
    192.23.215.0/24               192.23.0.0/16
    192.23.216.0/24               192.23.0.0/16
    192.23.217.0/24               192.23.0.0/16
    192.23.218.0/24               192.23.0.0/16
    192.23.219.0/24               192.23.0.0/16
    192.23.220.0/22               192.23.0.0/16
    192.23.221.0/24               192.23.0.0/16
    192.23.222.0/24               192.23.0.0/16
    192.23.223.0/24               192.23.0.0/16
    192.23.224.0/21               192.23.0.0/16
    192.23.225.0/24               192.23.0.0/16
    192.23.226.0/24               192.23.0.0/16
    192.23.227.0/24               192.23.0.0/16
    192.23.228.0/24               192.23.0.0/16
    192.23.229.0/24               192.23.0.0/16
    192.23.232.0/24               192.23.0.0/16
    192.23.233.0/24               192.23.0.0/16
    192.23.234.0/24               192.23.0.0/16
    192.23.235.0/24               192.23.0.0/16
    192.23.237.0/24               192.23.0.0/16
    192.23.238.0/24               192.23.0.0/16
    192.23.239.0/24               192.23.0.0/16
    192.23.240.0/24               192.23.0.0/16
    192.23.241.0/24               192.23.0.0/16
    192.23.242.0/24               192.23.0.0/16
    192.23.243.0/24               192.23.0.0/16
    192.23.244.0/24               192.23.0.0/16
    192.23.245.0/24               192.23.0.0/16
    192.23.246.0/24               192.23.0.0/16
    192.23.251.0/24               192.23.0.0/16
    199.6.192.0/22                199.6.128.0/17
    204.17.158.0/24               204.17.158.0/23
    204.17.159.0/24               204.17.158.0/23
    204.17.160.0/24               204.17.160.0/23
    204.17.161.0/24               204.17.160.0/23
    205.153.228.0/24              205.153.228.0/22
    205.153.229.0/24              205.153.228.0/22
    205.153.230.0/24              205.153.228.0/22
    205.153.231.0/24              205.153.228.0/22

Whois Entry

whois: 402603

IANA has recorded AS72 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS72\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       72
             ASName:         SCHLUMBERGER-AS
             ASHandle:       AS72
             RegDate:        1986-05-05
             Updated:        2012-04-02
             Ref:            https://rdap.arin.net/registry/autnum/72
             
             
             OrgName:        Schlumberger Limited
             OrgId:          SCHLU-3-Z
             Address:        5599 San Felipe
             Address:        Suite 1700
             City:           Houston
             StateProv:      TX
             PostalCode:     77056
             Country:        US
             RegDate:        2008-06-05
             Updated:        2011-07-28
             Ref:            https://rdap.arin.net/registry/entity/SCHLU-3-Z
             
             
             OrgTechHandle: ZS104-ARIN
             OrgTechName:   Schlumberger IP Address Coordinator
             OrgTechPhone:  +1-713-513-1100 
             OrgTechEmail:  hostmaster@slb.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZS104-ARIN
             
             OrgNOCHandle: SHEWD-ARIN
             OrgNOCName:   Schlumberger Houston EMC WAN Desk
             OrgNOCPhone:  +1-713-513-2028 
             OrgNOCEmail:  hostmaster@slb.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SHEWD-ARIN
             
             OrgAbuseHandle: SISO-ARIN
             OrgAbuseName:   Schlumberger IT Security Operations
             OrgAbusePhone:  +1-713-513-1100 
             OrgAbuseEmail:  abuse@slb.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SISO-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #