Report for 14652

Name

COSTARGROUPASN - COSTAR 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.

14652 COSTARGROUPASN - COSTAR GROUP Inc., US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174 - Cogent Communications, LLC, US
    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
19608 AS14652        ORIGIN  Originate:       3072 /20.42  Transit:          0 /0.00  COSTARGROUPASN - COSTAR 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       %
33536 AS14652       COSTARGROUPASN - COSTAR GROUP Inc., US            10      0      0     10      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  8.39.162.0/24        4777 2516 3356 14652   
  8.43.77.0/24         4777 2516 174 14652    
  38.103.15.0/24       4777 2516 3356 14652   
  38.109.150.0/24      4777 2516 3356 14652 14652 14652 14652 14652   
  63.86.105.0/24       4777 2516 174 14652    
  65.210.23.0/24       4777 2516 701 14652    
  65.210.120.0/24      4777 2516 701 14652 14652 14652 14652 14652 14652   
  65.222.180.0/23      4777 2516 701 14652    
  65.246.30.0/24       4777 2516 701 14652    
  97.65.16.0/23        4777 2516 701 14652    

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

AS14652   10 More Specifics   10 Total Advertisements   COSTARGROUPASN - COSTAR GROUP Inc., US
    8.39.162.0/24                 8.32.0.0/11
    8.43.77.0/24                  8.32.0.0/11
    38.103.15.0/24                38.0.0.0/8
    38.109.150.0/24               38.0.0.0/8
    63.86.105.0/24                63.64.0.0/10
    65.210.23.0/24                65.192.0.0/11
    65.210.120.0/24               65.192.0.0/11
    65.222.180.0/23               65.192.0.0/11
    65.246.30.0/24                65.240.0.0/13
    97.65.16.0/23                 97.65.0.0/16

Whois Entry

whois: 402609

IANA has recorded AS14652 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS14652\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:       14652
             ASName:         COSTARGROUPASN
             ASHandle:       AS14652
             RegDate:        2000-01-20
             Updated:        2024-08-01
             Ref:            https://rdap.arin.net/registry/autnum/14652
             
             
             OrgName:        COSTAR GROUP Inc.
             OrgId:          COSTAR-2
             Address:        1331 L St N.W.
             City:           Washington
             StateProv:      DC
             PostalCode:     20005-4293
             Country:        US
             RegDate:        2000-01-06
             Updated:        2024-08-12
             Ref:            https://rdap.arin.net/registry/entity/COSTAR-2
             
             
             OrgRoutingHandle: CNT13-ARIN
             OrgRoutingName:   Costar Network Team
             OrgRoutingPhone:  +1-202-336-6960 
             OrgRoutingEmail:  costarnetworkteam@costar.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/CNT13-ARIN
             
             OrgDNSHandle: CNT13-ARIN
             OrgDNSName:   Costar Network Team
             OrgDNSPhone:  +1-202-336-6960 
             OrgDNSEmail:  costarnetworkteam@costar.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/CNT13-ARIN
             
             OrgAbuseHandle: CNT13-ARIN
             OrgAbuseName:   Costar Network Team
             OrgAbusePhone:  +1-202-336-6960 
             OrgAbuseEmail:  costarnetworkteam@costar.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/CNT13-ARIN
             
             OrgTechHandle: STONG5-ARIN
             OrgTechName:   Stong, Ian 
             OrgTechPhone:  +1-202-336-6960 
             OrgTechEmail:  istong@costar.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/STONG5-ARIN
             
             OrgAbuseHandle: STONG5-ARIN
             OrgAbuseName:   Stong, Ian 
             OrgAbusePhone:  +1-202-336-6960 
             OrgAbuseEmail:  istong@costar.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/STONG5-ARIN
             
             OrgTechHandle: CNT13-ARIN
             OrgTechName:   Costar Network Team
             OrgTechPhone:  +1-202-336-6960 
             OrgTechEmail:  costarnetworkteam@costar.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/CNT13-ARIN
             
             OrgNOCHandle: CNT13-ARIN
             OrgNOCName:   Costar Network Team
             OrgNOCPhone:  +1-202-336-6960 
             OrgNOCEmail:  costarnetworkteam@costar.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/CNT13-ARIN
             
             RTechHandle: TC346-ARIN
             RTechName:   Chambers, Tom 
             RTechPhone:  +1-301-215-8335 
             RTechEmail:  tchambers@costargroup.com
             RTechRef:    https://rdap.arin.net/registry/entity/TC346-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.
             #