Report for 11396

Name

TWC-ASN - Williams Information Technology LLC, 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.

11396 TWC-ASN, US

  Adjacency:     7  Upstream:     7  Downstream:     0
  Upstream Adjacent AS list
    AS33659         CMCS, US
    AS35280         F5, FR
    AS3356          LEVEL3, US
    AS7922          COMCAST-7922, US
    AS33287         COMCAST-33287, US
    AS33490         COMCAST-33490, US
    AS33660         CMCS, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4592  AS11396        ORIGIN  Originate:      44544 /16.56  Transit:          0 /0.00  TWC-ASN, 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       %
 8527 AS11396       TWC-ASN, US                                       23      9      4     18      5  21.74%


  Prefix               AS Path                              Aggregation Suggestion
  151.142.64.0/24      7018 7922 33490 11396   
  151.142.65.0/24      7018 7922 33660 11396   
  151.142.66.0/24      7018 7922 33490 11396   
  151.142.68.0/24      2152 7922 33287 11396   
  151.142.69.0/24      7018 3356 11396        
  151.142.70.0/24      6939 3356 11396        
  151.142.71.0/24      3257 3356 11396        
  151.142.128.0/19     3257 7922 11396 11396 11396 11396 11396   
  151.142.128.0/19     7018 3356 11396 11396 11396 11396 11396 + Announce - aggregate of 151.142.128.0/20 (7018 3356 11396 11396 11396 11396 11396) and 151.142.144.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.128.0/20     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.144.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.132.0/24     6939 35280 11396       
  151.142.144.0/20     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.128.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.154.0/24     6939 7922 11396 11396 11396 11396 11396   
  151.142.155.0/24     6939 3356 11396 11396 11396 11396 11396   
  151.142.160.0/20     6939 7922 11396 11396 11396 11396 11396   
  151.142.160.0/20     7018 3356 11396 11396 11396 11396 11396 + Announce - aggregate of 151.142.160.0/21 (7018 3356 11396 11396 11396 11396 11396) and 151.142.168.0/21 (7018 3356 11396 11396 11396 11396 11396)
  151.142.160.0/21     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.168.0/21 (7018 3356 11396 11396 11396 11396 11396)
  151.142.168.0/21     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.160.0/21 (7018 3356 11396 11396 11396 11396 11396)
  151.142.224.0/19     6939 7922 11396 11396 11396 11396 11396   
  151.142.224.0/19     7018 3356 11396 11396 11396 11396 11396 + Announce - aggregate of 151.142.224.0/20 (7018 3356 11396 11396 11396 11396 11396) and 151.142.240.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.224.0/20     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.240.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.240.0/20     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 151.142.224.0/20 (7018 3356 11396 11396 11396 11396 11396)
  151.142.250.0/24     7018 3356 11396 11396 11396 11396 11396 - Withdrawn - matching aggregate 151.142.240.0/20 7018 3356 11396 11396 11396 11396 11396
  151.142.251.0/24     6939 7922 11396 11396 11396 11396 11396   
  170.21.246.0/23      7018 3356 11396 11396 11396 11396 11396 + Announce - aggregate of 170.21.246.0/24 (7018 3356 11396 11396 11396 11396 11396) and 170.21.247.0/24 (7018 3356 11396 11396 11396 11396 11396)
  170.21.246.0/24      7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 170.21.247.0/24 (7018 3356 11396 11396 11396 11396 11396)
  170.21.247.0/24      7018 3356 11396 11396 11396 11396 11396 - Withdrawn - aggregated with 170.21.246.0/24 (7018 3356 11396 11396 11396 11396 11396)

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

AS11396   15 More Specifics   15 Total Advertisements   TWC-ASN, US
    151.142.128.0/19              151.142.0.0/16
    151.142.128.0/20              151.142.0.0/16
    151.142.144.0/20              151.142.0.0/16
    151.142.154.0/24              151.142.0.0/16
    151.142.155.0/24              151.142.0.0/16
    151.142.160.0/20              151.142.0.0/16
    151.142.160.0/21              151.142.0.0/16
    151.142.168.0/21              151.142.0.0/16
    151.142.224.0/19              151.142.0.0/16
    151.142.224.0/20              151.142.0.0/16
    151.142.240.0/20              151.142.0.0/16
    151.142.250.0/24              151.142.0.0/16
    151.142.251.0/24              151.142.0.0/16
    170.21.246.0/24               170.21.0.0/16
    170.21.247.0/24               170.21.0.0/16
    151.142.64.0/24               151.142.0.0/16
    151.142.65.0/24               151.142.0.0/16
    151.142.66.0/24               151.142.0.0/16
    151.142.132.0/24              151.142.0.0/16
    151.142.228.0/24              151.142.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 151.142.64.0/24             Withdrawn
    - 151.142.65.0/24             Withdrawn
    - 151.142.66.0/24             Withdrawn
    - 151.142.132.0/24            Withdrawn
    - 151.142.228.0/24            Withdrawn

Whois Entry

whois: 402551

IANA has recorded AS11396 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11396\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:       11396
             ASName:         TWC-ASN
             ASHandle:       AS11396
             RegDate:        1998-08-03
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/11396
             
             
             OrgName:        Williams Information Technology LLC
             OrgId:          WINF
             Address:        P.O. Box 2400
             City:           Tulsa
             StateProv:      OK
             PostalCode:     74102
             Country:        US
             RegDate:        1991-12-30
             Updated:        2017-02-28
             Ref:            https://rdap.arin.net/registry/entity/WINF
             
             
             OrgTechHandle: DOMAI76-ARIN
             OrgTechName:   Domain-Tech
             OrgTechPhone:  +1-918-573-2000 
             OrgTechEmail:  domain-tech@williams.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DOMAI76-ARIN
             
             OrgAbuseHandle: DOMAI76-ARIN
             OrgAbuseName:   Domain-Tech
             OrgAbusePhone:  +1-918-573-2000 
             OrgAbuseEmail:  domain-tech@williams.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI76-ARIN
             
             RAbuseHandle: DOMAI75-ARIN
             RAbuseName:   Domain-Admin
             RAbusePhone:  +1-918-573-2000 
             RAbuseEmail:  domain-admin@williams.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI75-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.
             #