Report for 18888

Name

AS-ZILLOW - ZILLOW, 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.

18888 AS-ZILLOW - ZILLOW, INC., US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS11404         AS-WAVE-1 - Wave Broadband, US
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
32694 AS18888        ORIGIN  Originate:       1280 /21.68  Transit:          0 /0.00  AS-ZILLOW - ZILLOW, 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       %
35349 AS18888       AS-ZILLOW - ZILLOW, INC., US                       5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  64.42.187.0/24       4777 2497 6461 18888   
  64.42.189.0/24       4777 2516 3356 18888   
  64.42.191.0/24       4777 2497 7018 18888   
  192.211.13.0/24      4777 2516 3356 18888   
  209.133.71.0/24      4777 2497 3356 18888   

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

AS18888   5 More Specifics   5 Total Advertisements   AS-ZILLOW - ZILLOW, INC., US
    64.42.187.0/24                64.42.184.0/21
    64.42.189.0/24                64.42.184.0/21
    64.42.191.0/24                64.42.184.0/21
    192.211.13.0/24               192.211.12.0/22
    209.133.71.0/24               209.133.0.0/17

Whois Entry

whois: 402332

IANA has recorded AS18888 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS18888\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:       18888
             ASName:         AS-ZILLOW
             ASHandle:       AS18888
             RegDate:        2006-11-17
             Updated:        2023-02-26
             Ref:            https://rdap.arin.net/registry/autnum/18888
             
             
             OrgName:        ZILLOW, INC.
             OrgId:          ZILLO
             Address:        1301 Second Avenue, Floor 31
             City:           Seattle
             StateProv:      WA
             PostalCode:     98101
             Country:        US
             RegDate:        2005-03-17
             Updated:        2026-02-20
             Comment:        http://www.zillow.com noc@zillow.com
             Ref:            https://rdap.arin.net/registry/entity/ZILLO
             
             
             OrgTechHandle: NEVLI3-ARIN
             OrgTechName:   Nevlida, Michael 
             OrgTechPhone:  +1-507-400-0858 
             OrgTechEmail:  michaelne@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NEVLI3-ARIN
             
             OrgAbuseHandle: DBE78-ARIN
             OrgAbuseName:   Beitel, David 
             OrgAbusePhone:  +1-206-470-7105 
             OrgAbuseEmail:  davebei@zillowgroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DBE78-ARIN
             
             OrgAbuseHandle: NEVLI3-ARIN
             OrgAbuseName:   Nevlida, Michael 
             OrgAbusePhone:  +1-507-400-0858 
             OrgAbuseEmail:  michaelne@zillowgroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NEVLI3-ARIN
             
             OrgTechHandle: DBE78-ARIN
             OrgTechName:   Beitel, David 
             OrgTechPhone:  +1-206-470-7105 
             OrgTechEmail:  davebei@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DBE78-ARIN
             
             OrgTechHandle: MARTE162-ARIN
             OrgTechName:   Marte, Aaron 
             OrgTechPhone:  +1-570-285-4161 
             OrgTechEmail:  aaronmart@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MARTE162-ARIN
             
             OrgAbuseHandle: MARTE162-ARIN
             OrgAbuseName:   Marte, Aaron 
             OrgAbusePhone:  +1-570-285-4161 
             OrgAbuseEmail:  aaronmart@zillowgroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MARTE162-ARIN
             
             OrgTechHandle: AAB43-ARIN
             OrgTechName:   Boley, Alexander Alexander
             OrgTechPhone:  +1-312-766-9197 
             OrgTechEmail:  alexbol@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/AAB43-ARIN
             
             OrgTechHandle: ZIDON-ARIN
             OrgTechName:   Zidones, Elizabeth 
             OrgTechPhone:  +1-813-557-3680 
             OrgTechEmail:  elizabethz@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZIDON-ARIN
             
             OrgAbuseHandle: ZIDON-ARIN
             OrgAbuseName:   Zidones, Elizabeth 
             OrgAbusePhone:  +1-813-557-3680 
             OrgAbuseEmail:  elizabethz@zillowgroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZIDON-ARIN
             
             OrgAbuseHandle: KIBBE1-ARIN
             OrgAbuseName:   Kibbey, Jeffrey 
             OrgAbusePhone:  +1-206-757-4753 
             OrgAbuseEmail:  JeffreyKi@ZillowGroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/KIBBE1-ARIN
             
             OrgTechHandle: KIBBE1-ARIN
             OrgTechName:   Kibbey, Jeffrey 
             OrgTechPhone:  +1-206-757-4753 
             OrgTechEmail:  JeffreyKi@ZillowGroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/KIBBE1-ARIN
             
             OrgTechHandle: GUERR321-ARIN
             OrgTechName:   Guerrero, Danny 
             OrgTechPhone:  +1-425-533-7679 
             OrgTechEmail:  dannyg@zillowgroup.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/GUERR321-ARIN
             
             OrgNOCHandle: ZILLO-ARIN
             OrgNOCName:   Zillow NOC
             OrgNOCPhone:  +1-206-470-7175 
             OrgNOCEmail:  noc@zillow.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ZILLO-ARIN
             
             OrgAbuseHandle: AAB43-ARIN
             OrgAbuseName:   Boley, Alexander Alexander
             OrgAbusePhone:  +1-312-766-9197 
             OrgAbuseEmail:  alexbol@zillowgroup.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/AAB43-ARIN
             
             RAbuseHandle: ZIDON-ARIN
             RAbuseName:   Zidones, Elizabeth 
             RAbusePhone:  +1-813-557-3680 
             RAbuseEmail:  elizabethz@zillowgroup.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/ZIDON-ARIN
             
             RNOCHandle: ZILLO-ARIN
             RNOCName:   Zillow NOC
             RNOCPhone:  +1-206-470-7175 
             RNOCEmail:  noc@zillow.com
             RNOCRef:    https://rdap.arin.net/registry/entity/ZILLO-ARIN
             
             RAbuseHandle: AMESS44-ARIN
             RAbuseName:   Ames, Scott 
             RAbusePhone:  +1-206-591-0587 
             RAbuseEmail:  scotta@zillowgroup.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/AMESS44-ARIN
             
             RTechHandle: AMESS44-ARIN
             RTechName:   Ames, Scott 
             RTechPhone:  +1-206-591-0587 
             RTechEmail:  scotta@zillowgroup.com
             RTechRef:    https://rdap.arin.net/registry/entity/AMESS44-ARIN
             
             RAbuseHandle: KIBBE1-ARIN
             RAbuseName:   Kibbey, Jeffrey 
             RAbusePhone:  +1-206-757-4753 
             RAbuseEmail:  JeffreyKi@ZillowGroup.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/KIBBE1-ARIN
             
             RTechHandle: ZIDON-ARIN
             RTechName:   Zidones, Elizabeth 
             RTechPhone:  +1-813-557-3680 
             RTechEmail:  elizabethz@zillowgroup.com
             RTechRef:    https://rdap.arin.net/registry/entity/ZIDON-ARIN
             
             RTechHandle: DBE78-ARIN
             RTechName:   Beitel, David 
             RTechPhone:  +1-206-470-7105 
             RTechEmail:  davebei@zillowgroup.com
             RTechRef:    https://rdap.arin.net/registry/entity/DBE78-ARIN
             
             RTechHandle: KIBBE1-ARIN
             RTechName:   Kibbey, Jeffrey 
             RTechPhone:  +1-206-757-4753 
             RTechEmail:  JeffreyKi@ZillowGroup.com
             RTechRef:    https://rdap.arin.net/registry/entity/KIBBE1-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.
             #