Report for 53501

Name

WHS-WEBMD - WebMD Health Services Group, 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 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.

53501 WHS-WEBMD - WebMD Health Services Group, Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
25321 AS53501        ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  WHS-WEBMD - WebMD Health Services Group, Inc., 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       %
16756 AS53501       WHS-WEBMD - WebMD Health Services Group, Inc.      6      4      2      4      2  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  64.113.28.0/22       4777 2497 3356 53501 + Announce - aggregate of 64.113.28.0/23 (4777 2497 3356 53501) and 64.113.30.0/23 (4777 2497 3356 53501)
  64.113.28.0/23       4777 2497 3356 53501 - Withdrawn - aggregated with 64.113.30.0/23 (4777 2497 3356 53501)
  64.113.28.0/24       4777 2497 6461 53501   
  64.113.29.0/24       4777 2516 3356 53501 53501 53501 53501   
  64.113.30.0/23       4777 2497 3356 53501 - Withdrawn - aggregated with 64.113.28.0/23 (4777 2497 3356 53501)
  64.113.30.0/23       4608 7575 6461 53501 + Announce - aggregate of 64.113.30.0/24 (4608 7575 6461 53501) and 64.113.31.0/24 (4608 7575 6461 53501)
  64.113.30.0/24       4608 7575 6461 53501 - Withdrawn - aggregated with 64.113.31.0/24 (4608 7575 6461 53501)
  64.113.31.0/24       4608 7575 6461 53501 - Withdrawn - aggregated with 64.113.30.0/24 (4608 7575 6461 53501)

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

AS53501   6 More Specifics   6 Total Advertisements   WHS-WEBMD - WebMD Health Services Group, Inc., US
    64.113.28.0/23                64.113.28.0/22
    64.113.28.0/24                64.113.28.0/22
    64.113.29.0/24                64.113.28.0/22
    64.113.30.0/23                64.113.28.0/22
    64.113.30.0/24                64.113.28.0/22
    64.113.31.0/24                64.113.28.0/22

Whois Entry

whois: 402332

IANA has recorded AS53501 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS53501\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:       53501
             ASName:         WHS-WEBMD
             ASHandle:       AS53501
             RegDate:        2018-01-31
             Updated:        2018-01-31
             Ref:            https://rdap.arin.net/registry/autnum/53501
             
             
             OrgName:        WebMD Health Services Group, Inc.
             OrgId:          WHSG-1
             Address:        2701 NW Vaughn St # 700
             City:           Portland
             StateProv:      OR
             PostalCode:     97210
             Country:        US
             RegDate:        2018-01-24
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/WHSG-1
             
             
             OrgNOCHandle: WHSIP-ARIN
             OrgNOCName:   WHS-IP-ADMIN
             OrgNOCPhone:  +1-212-624-3700 
             OrgNOCEmail:  netops@webmdhealth.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/WHSIP-ARIN
             
             OrgAbuseHandle: WHSIP-ARIN
             OrgAbuseName:   WHS-IP-ADMIN
             OrgAbusePhone:  +1-212-624-3700 
             OrgAbuseEmail:  netops@webmdhealth.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/WHSIP-ARIN
             
             OrgTechHandle: WHSIP-ARIN
             OrgTechName:   WHS-IP-ADMIN
             OrgTechPhone:  +1-212-624-3700 
             OrgTechEmail:  netops@webmdhealth.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WHSIP-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.
             #