Report for 39961

Name

CCSF - San Francisco Department of Telecommunications and Information Services, 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.

39961 CCSF - San Francisco Department of Telecommunications and Information Services, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS11404         AS-WAVE-1 - Wave Broadband, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4023  AS39961        ORIGIN  Originate:      59648 /16.14  Transit:          0 /0.00  CCSF - San Francisco Department of Telecommunications and Information Services, 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       %
10012 AS39961       CCSF - San Francisco Department of Telecommun     12      6      2      8      4  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  208.121.0.0/23       4777 2516 11404 39961 + Announce - aggregate of 208.121.0.0/24 (4777 2516 11404 39961) and 208.121.1.0/24 (4777 2516 11404 39961)
  208.121.0.0/24       4777 2516 11404 39961 - Withdrawn - aggregated with 208.121.1.0/24 (4777 2516 11404 39961)
  208.121.1.0/24       4777 2516 11404 39961 - Withdrawn - aggregated with 208.121.0.0/24 (4777 2516 11404 39961)
  208.121.5.0/24       4777 2497 7018 39961   
  208.121.6.0/24       4777 2516 11404 39961   
  208.121.32.0/20      4777 2497 7018 39961   
  208.121.48.0/20      4777 2516 11404 39961   
  208.121.64.0/18      4777 2497 7018 39961   
  208.121.128.0/17     4777 2497 7018 39961   
  208.121.203.0/24     4777 2497 7018 39961 - Withdrawn - matching aggregate 208.121.128.0/17 4777 2497 7018 39961
  208.121.224.0/22     4777 2516 11404 39961 + Announce - aggregate of 208.121.224.0/23 (4777 2516 11404 39961) and 208.121.226.0/23 (4777 2516 11404 39961)
  208.121.224.0/24     4777 2516 11404 39961 - Withdrawn - aggregated with 208.121.225.0/24 (4777 2516 11404 39961)
  208.121.225.0/24     4777 2516 11404 39961 - Withdrawn - aggregated with 208.121.224.0/24 (4777 2516 11404 39961)
  208.121.226.0/23     4777 2516 11404 39961 - Withdrawn - aggregated with 208.121.224.0/23 (4777 2516 11404 39961)

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

AS39961   12 More Specifics   12 Total Advertisements   CCSF - San Francisco Department of Telecommunications and Information Services, US
    208.121.0.0/24                208.121.0.0/16
    208.121.1.0/24                208.121.0.0/16
    208.121.5.0/24                208.121.0.0/16
    208.121.6.0/24                208.121.0.0/16
    208.121.32.0/20               208.121.0.0/16
    208.121.48.0/20               208.121.0.0/16
    208.121.64.0/18               208.121.0.0/16
    208.121.128.0/17              208.121.0.0/16
    208.121.203.0/24              208.121.0.0/16
    208.121.224.0/24              208.121.0.0/16
    208.121.225.0/24              208.121.0.0/16
    208.121.226.0/23              208.121.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS39961 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS39961\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:       39961
             ASName:         CCSF
             ASHandle:       AS39961
             RegDate:        2006-05-24
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/39961
             
             
             OrgName:        San Francisco Department of Telecommunications and Information Services
             OrgId:          SFDTIS
             Address:        One South Van Ness Avenue
             Address:        2nd Floor
             City:           San Francisco
             StateProv:      CA
             PostalCode:     94103
             Country:        US
             RegDate:        2005-06-14
             Updated:        2024-11-05
             Comment:        Contact dt.ops@sfgov.org, 1-628-652-5100
             Ref:            https://rdap.arin.net/registry/entity/SFDTIS
             
             
             OrgAbuseHandle: DTSEC-ARIN
             OrgAbuseName:   DT Security
             OrgAbusePhone:  +1-628-652-5000 
             OrgAbuseEmail:  cyberdefense@sfgov.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DTSEC-ARIN
             
             OrgTechHandle: GRY9-ARIN
             OrgTechName:   Ybanez, Glacier R
             OrgTechPhone:  +1-415-716-8419 
             OrgTechEmail:  glacier.ybanez@sf.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/GRY9-ARIN
             
             OrgNOCHandle: NOC3189-ARIN
             OrgNOCName:   Network Operations Center
             OrgNOCPhone:  +1-415-581-7170 
             OrgNOCEmail:  dt.ops@sfgov.org
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC3189-ARIN
             
             OrgTechHandle: BELLB45-ARIN
             OrgTechName:   Bell, Bradley 
             OrgTechPhone:  +1-949-216-0013 
             OrgTechEmail:  brad.bell@sfgov.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/BELLB45-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.
             #