Report for 21735

Name

GANNET-3-21735 - Gannett Co. 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.

21735 GANNET-3-21735 - Gannett Co. Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS54004         LIGHTPATH - Cablevision Lightpath LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
7352  AS21735        ORIGIN  Originate:      17920 /17.87  Transit:          0 /0.00  GANNET-3-21735 - Gannett Co. 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       %
21663 AS21735       GANNET-3-21735 - Gannett Co. Inc., US              5      1      0      4      1  20.00%


  Prefix               AS Path                              Aggregation Suggestion
  159.54.24.0/22       4777 2516 3356 6128 54004 21735   
  159.54.32.0/19       4777 2516 3356 6128 54004 21735   
  159.54.36.0/24       4777 2497 3356 21735 21735 21735 21735   
  159.54.37.0/24       4777 2516 3356 6128 54004 21735 - Withdrawn - matching aggregate 159.54.32.0/19 4777 2516 3356 6128 54004 21735
  159.54.224.0/19      4777 2516 3356 6128 54004 21735   

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

AS21735   5 More Specifics   5 Total Advertisements   GANNET-3-21735 - Gannett Co. Inc., US
    159.54.24.0/22                159.54.0.0/18
    159.54.32.0/19                159.54.0.0/18
    159.54.36.0/24                159.54.0.0/18
    159.54.37.0/24                159.54.0.0/18
    159.54.224.0/19               159.54.192.0/18

Whois Entry

whois: 402332

IANA has recorded AS21735 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21735\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:       21735
             ASName:         GANNET-3-21735
             ASHandle:       AS21735
             RegDate:        2017-10-03
             Updated:        2018-06-05
             Ref:            https://rdap.arin.net/registry/autnum/21735
             
             
             OrgName:        Gannett Co. Inc.
             OrgId:          GANNET-3
             Address:        2240 Broadbirch Drive
             City:           Silver Spring
             StateProv:      MD
             PostalCode:     20904
             Country:        US
             RegDate:        1993-04-09
             Updated:        2020-09-08
             Ref:            https://rdap.arin.net/registry/entity/GANNET-3
             
             
             OrgTechHandle: IPADM24-ARIN
             OrgTechName:   IP Administration
             OrgTechPhone:  +1-602-946-4950 
             OrgTechEmail:  ipadmin@gannett.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM24-ARIN
             
             OrgAbuseHandle: IPADM24-ARIN
             OrgAbuseName:   IP Administration
             OrgAbusePhone:  +1-602-946-4950 
             OrgAbuseEmail:  ipadmin@gannett.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/IPADM24-ARIN
             
             RAbuseHandle: IPADM24-ARIN
             RAbuseName:   IP Administration
             RAbusePhone:  +1-602-946-4950 
             RAbuseEmail:  ipadmin@gannett.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/IPADM24-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.
             #