Report for 12257

Name

EMC-AS12257 - Dell, Inc., 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.

12257 DGC - Data General Corporation

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS701     UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
    AS5400    BT BT European Backbone

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
853   AS12257  ORIGIN  Originate:     212480 /14.30  Transit:          0 /0.00  DGC - Data General Corporation

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       %
 1259 AS12257 DGC - Data General Corporation               20     11      1     10     10  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  128.221.0.0/16       4637 3491 701 12257    
  128.221.4.0/24       4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.10.0/24      4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.12.0/24      4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.22.0/24      4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.67.0/24      4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.131.0/24     4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.221.192.0/20     4637 3491 701 12257  - Withdrawn - matching aggregate 128.221.0.0/16 4637 3491 701 12257
  128.222.0.0/16       4637 3491 701 12257    
  128.222.1.0/24       4637 3491 701 12257  - Withdrawn - matching aggregate 128.222.0.0/16 4637 3491 701 12257
  128.222.32.0/20      4637 3491 701 12257  - Withdrawn - matching aggregate 128.222.0.0/16 4637 3491 701 12257
  137.69.112.0/20      4637 3491 701 12257    
  137.69.200.0/24      4637 3491 701 12257    
  152.62.107.0/24      4637 5400 12257 12257   
  152.62.108.0/23      4637 5400 12257 12257 + Announce - aggregate of 152.62.108.0/24 (4637 5400 12257 12257) and 152.62.109.0/24 (4637 5400 12257 12257)
  152.62.108.0/24      4637 5400 12257 12257 - Withdrawn - aggregated with 152.62.109.0/24 (4637 5400 12257 12257)
  152.62.109.0/24      4637 5400 12257 12257 - Withdrawn - aggregated with 152.62.108.0/24 (4637 5400 12257 12257)
  152.62.110.0/24      4637 5400 12257 12257   
  168.159.0.0/16       4637 3491 701 12257    
  199.245.235.0/24     4637 3491 701 12257    
  206.34.224.0/24      4637 3491 701 12257    

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

AS12257   16 More Specifics   18 Total Advertisements   DGC - Data General Corporation
    128.221.4.0/24                128.221.0.0/16
    128.221.10.0/24               128.221.0.0/16
    128.221.12.0/24               128.221.0.0/16
    128.221.22.0/24               128.221.0.0/16
    128.221.67.0/24               128.221.0.0/16
    128.221.131.0/24              128.221.0.0/16
    128.221.192.0/20              128.221.0.0/16
    128.222.1.0/24                128.222.0.0/16
    128.222.32.0/20               128.222.0.0/16
    137.69.112.0/20               137.69.0.0/16
    137.69.200.0/24               137.69.0.0/16
    152.62.107.0/24               152.62.0.0/16
    152.62.108.0/24               152.62.0.0/16
    152.62.109.0/24               152.62.0.0/16
    152.62.110.0/24               152.62.0.0/16
    206.34.224.0/24               206.32.0.0/14

Whois Entry

whois: 402603

IANA has recorded AS12257 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12257\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:       12257
             ASName:         EMC-AS12257
             ASHandle:       AS12257
             RegDate:        1999-05-03
             Updated:        2023-03-20
             Ref:            https://rdap.arin.net/registry/autnum/12257
             
             
             OrgName:        Dell, Inc.
             OrgId:          DCC-25
             Address:        One Dell Way
             City:           Round Rock
             StateProv:      TX
             PostalCode:     78682
             Country:        US
             RegDate:        1990-09-26
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/DCC-25
             
             
             OrgDNSHandle: PRESS58-ARIN
             OrgDNSName:   Pressley, James 
             OrgDNSPhone:  +1-214-326-9581 
             OrgDNSEmail:  james.pressley@dell.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/PRESS58-ARIN
             
             OrgTechHandle: ANDER430-ARIN
             OrgTechName:   Anderson, Colm 
             OrgTechPhone:  +0035312795000 
             OrgTechEmail:  colm.anderson@dell.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ANDER430-ARIN
             
             OrgDNSHandle: ANDER430-ARIN
             OrgDNSName:   Anderson, Colm 
             OrgDNSPhone:  +0035312795000 
             OrgDNSEmail:  colm.anderson@dell.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/ANDER430-ARIN
             
             OrgTechHandle: PRESS58-ARIN
             OrgTechName:   Pressley, James 
             OrgTechPhone:  +1-214-326-9581 
             OrgTechEmail:  james.pressley@dell.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/PRESS58-ARIN
             
             OrgAbuseHandle: OPERA394-ARIN
             OrgAbuseName:   Operations Center
             OrgAbusePhone:  +1-866-434-8368 
             OrgAbuseEmail:  ipregistrars.abuse@dell.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/OPERA394-ARIN
             
             OrgNOCHandle: OPERA394-ARIN
             OrgNOCName:   Operations Center
             OrgNOCPhone:  +1-866-434-8368 
             OrgNOCEmail:  ipregistrars.abuse@dell.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/OPERA394-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.
             #