Report for 63138

Name

SAC-COLO1 - Blue Shield of California, 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 AS2.0) 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.

63138 SAC-COLO1 - Blue Shield of California, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS701           UUNET - Verizon Business, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
33594 AS63138        ORIGIN  Originate:       1280 /21.68  Transit:          0 /0.00  SAC-COLO1 - Blue Shield of California, 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       %
17589 AS63138       SAC-COLO1 - Blue Shield of California, US          5      4      2      3      2  40.00%


  Prefix               AS Path                              Aggregation Suggestion
  165.253.34.0/23      4777 2516 3356 63138 + Announce - aggregate of 165.253.34.0/24 (4777 2516 3356 63138) and 165.253.35.0/24 (4777 2516 3356 63138)
  165.253.34.0/24      4777 2516 3356 63138 - Withdrawn - aggregated with 165.253.35.0/24 (4777 2516 3356 63138)
  165.253.35.0/24      4777 2516 3356 63138 - Withdrawn - aggregated with 165.253.34.0/24 (4777 2516 3356 63138)
  165.253.42.0/24      4777 2516 701 63138    
  165.253.134.0/23     4777 2516 3356 63138 + Announce - aggregate of 165.253.134.0/24 (4777 2516 3356 63138) and 165.253.135.0/24 (4777 2516 3356 63138)
  165.253.134.0/24     4777 2516 3356 63138 - Withdrawn - aggregated with 165.253.135.0/24 (4777 2516 3356 63138)
  165.253.135.0/24     4777 2516 3356 63138 - Withdrawn - aggregated with 165.253.134.0/24 (4777 2516 3356 63138)

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

AS63138   5 More Specifics   5 Total Advertisements   SAC-COLO1 - Blue Shield of California, US
    165.253.34.0/24               165.253.0.0/16
    165.253.35.0/24               165.253.0.0/16
    165.253.42.0/24               165.253.0.0/16
    165.253.134.0/24              165.253.0.0/16
    165.253.135.0/24              165.253.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS63138 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS63138\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:       63138
             ASName:         SAC-COLO1
             ASHandle:       AS63138
             RegDate:        2014-08-07
             Updated:        2014-08-07
             Ref:            https://rdap.arin.net/registry/autnum/63138
             
             
             OrgName:        Blue Shield of California
             OrgId:          BSC-1
             Address:        4203 Town Center Blvd
             City:           El Dorado Hills
             StateProv:      CA
             PostalCode:     95762
             Country:        US
             RegDate:        1993-10-18
             Updated:        2021-11-15
             Ref:            https://rdap.arin.net/registry/entity/BSC-1
             
             
             OrgAbuseHandle: ITSIR-ARIN
             OrgAbuseName:   IT-SIRT
             OrgAbusePhone:  +1-916-350-7005 
             OrgAbuseEmail:  abuse@blueshieldca.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ITSIR-ARIN
             
             OrgTechHandle: ITNET15-ARIN
             OrgTechName:   IT-Network Engineering
             OrgTechPhone:  +1-916-350-7507 
             OrgTechEmail:  IT-NetworkEngineering@blueshieldca.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ITNET15-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.
             #