Report for 27205

Name

IHSM-AS27205 - IHS Global, 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 AS6447) 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.

27205 IHSM-AS27205, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS15830         EQUINIX, NL
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK, US
    AS6461          ZAYO-6461, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
10790 AS27205        ORIGIN  Originate:       9216 /18.83  Transit:          0 /0.00  IHSM-AS27205, US

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       %
 7390 AS27205       IHSM-AS27205, US                                  18     12      6     12      6  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  8.38.16.0/21         2497 6461 27205        
  8.38.16.0/21         2497 32787 27205     + Announce - aggregate of 8.38.16.0/22 (2497 32787 27205) and 8.38.20.0/22 (2497 32787 27205)
  8.38.16.0/22         2497 32787 27205     - Withdrawn - aggregated with 8.38.20.0/22 (2497 32787 27205)
  8.38.20.0/22         2497 32787 27205     - Withdrawn - aggregated with 8.38.16.0/22 (2497 32787 27205)
  170.207.32.0/23      6939 6461 27205        
  170.207.32.0/23      2497 32787 27205     + Announce - aggregate of 170.207.32.0/24 (2497 32787 27205) and 170.207.33.0/24 (2497 32787 27205)
  170.207.32.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.33.0/24 (2497 32787 27205)
  170.207.33.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.32.0/24 (2497 32787 27205)
  170.207.34.0/23      6939 6461 27205        
  170.207.34.0/23      2497 32787 27205     + Announce - aggregate of 170.207.34.0/24 (2497 32787 27205) and 170.207.35.0/24 (2497 32787 27205)
  170.207.34.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.35.0/24 (2497 32787 27205)
  170.207.35.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.34.0/24 (2497 32787 27205)
  170.207.36.0/23      6939 6461 27205        
  170.207.36.0/23      2497 32787 27205     + Announce - aggregate of 170.207.36.0/24 (2497 32787 27205) and 170.207.37.0/24 (2497 32787 27205)
  170.207.36.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.37.0/24 (2497 32787 27205)
  170.207.37.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.36.0/24 (2497 32787 27205)
  170.207.38.0/23      6939 6461 27205        
  170.207.38.0/23      2497 32787 27205     + Announce - aggregate of 170.207.38.0/24 (2497 32787 27205) and 170.207.39.0/24 (2497 32787 27205)
  170.207.38.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.39.0/24 (2497 32787 27205)
  170.207.39.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.38.0/24 (2497 32787 27205)
  170.207.40.0/23      6939 6461 27205        
  170.207.40.0/23      2497 32787 27205     + Announce - aggregate of 170.207.40.0/24 (2497 32787 27205) and 170.207.41.0/24 (2497 32787 27205)
  170.207.40.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.41.0/24 (2497 32787 27205)
  170.207.41.0/24      2497 32787 27205     - Withdrawn - aggregated with 170.207.40.0/24 (2497 32787 27205)

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

AS27205   20 More Specifics   20 Total Advertisements   IHSM-AS27205, US
    8.38.16.0/21                  8.32.0.0/11
    8.38.16.0/22                  8.32.0.0/11
    8.38.20.0/22                  8.32.0.0/11
    63.175.195.0/24               63.160.0.0/12
    69.164.89.0/24                69.164.88.0/23
    170.207.32.0/23               170.207.0.0/16
    170.207.32.0/24               170.207.0.0/16
    170.207.33.0/24               170.207.0.0/16
    170.207.34.0/23               170.207.0.0/16
    170.207.34.0/24               170.207.0.0/16
    170.207.35.0/24               170.207.0.0/16
    170.207.36.0/23               170.207.0.0/16
    170.207.36.0/24               170.207.0.0/16
    170.207.37.0/24               170.207.0.0/16
    170.207.38.0/23               170.207.0.0/16
    170.207.38.0/24               170.207.0.0/16
    170.207.39.0/24               170.207.0.0/16
    170.207.40.0/23               170.207.0.0/16
    170.207.40.0/24               170.207.0.0/16
    170.207.41.0/24               170.207.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS27205 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27205\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:       27205
             ASName:         IHSM-AS27205
             ASHandle:       AS27205
             RegDate:        2020-03-26
             Updated:        2020-03-26
             Ref:            https://rdap.arin.net/registry/autnum/27205
             
             
             OrgName:        IHS Global, Inc.
             OrgId:          IHSGL
             Address:        15 Inverness Way East.
             City:           Englewood
             StateProv:      CO
             PostalCode:     80112
             Country:        US
             RegDate:        2009-03-24
             Updated:        2026-05-04
             Ref:            https://rdap.arin.net/registry/entity/IHSGL
             
             
             OrgTechHandle: AGRAW26-ARIN
             OrgTechName:   Agrawal, Vipul 
             OrgTechPhone:  +918826476633 
             OrgTechEmail:  vipul.agrawal@spglobal.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/AGRAW26-ARIN
             
             OrgTechHandle: NETWO8081-ARIN
             OrgTechName:   Network Resources
             OrgTechPhone:  +1-800-447-2273 
             OrgTechEmail:  network-resources@ihsmarkit.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO8081-ARIN
             
             OrgAbuseHandle: HOSTM1209-ARIN
             OrgAbuseName:   Hostmaster
             OrgAbusePhone:  +1-303-790-0600 
             OrgAbuseEmail:  hostmaster@ihs.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM1209-ARIN
             
             OrgTechHandle: ENGMI2-ARIN
             OrgTechName:   Eng, Michael 
             OrgTechPhone:  +1-609-462-6373 
             OrgTechEmail:  michael.eng@spglobal.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ENGMI2-ARIN
             
             OrgTechHandle: JWC74-ARIN
             OrgTechName:   Cooler, Jeremy W
             OrgTechPhone:  +1-248-728-7852 
             OrgTechEmail:  jeremy.cooler@spglobal.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/JWC74-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.
             #