Report for 10309

Name

MARIN-MIDAS - County of Marin, 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.

10309 MARIN-MIDAS - County of Marin, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS33651         CMCS - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
11602 AS10309        ORIGIN  Originate:       8192 /19.00  Transit:          0 /0.00  MARIN-MIDAS - County of Marin, 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       %
32584 AS10309       MARIN-MIDAS - County of Marin, US                  9      0      0      9      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  107.0.46.0/23        4777 2516 7922 33651 10309   
  199.88.64.0/21       4777 2497 7018 10309   
  199.88.72.0/22       4777 2497 7018 10309   
  199.88.80.0/21       4777 2497 7018 10309   
  199.88.88.0/22       4777 2497 7018 10309   
  199.88.113.0/24      4777 2497 7018 10309   
  199.88.116.0/23      4777 2497 7018 10309   
  199.88.118.0/24      4777 2516 7922 33651 10309   
  199.88.120.0/23      4777 2516 7922 33651 10309   

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

AS10309   9 More Specifics   9 Total Advertisements   MARIN-MIDAS - County of Marin, US
    107.0.46.0/23                 107.0.0.0/14
    199.88.64.0/21                199.88.64.0/18
    199.88.72.0/22                199.88.64.0/18
    199.88.80.0/21                199.88.64.0/18
    199.88.88.0/22                199.88.64.0/18
    199.88.113.0/24               199.88.64.0/18
    199.88.116.0/23               199.88.64.0/18
    199.88.118.0/24               199.88.64.0/18
    199.88.120.0/23               199.88.64.0/18

Whois Entry

whois: 402332

IANA has recorded AS10309 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS10309\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:       10309
             ASName:         MARIN-MIDAS
             ASHandle:       AS10309
             RegDate:        1997-06-23
             Updated:        1997-06-23
             Ref:            https://rdap.arin.net/registry/autnum/10309
             
             
             OrgName:        County of Marin
             OrgId:          COUNTY-59
             Address:        3501 Cicic Center Dr
             City:           San Rafael
             StateProv:      CA
             PostalCode:     94903
             Country:        US
             RegDate:        1997-06-23
             Updated:        2023-06-06
             Ref:            https://rdap.arin.net/registry/entity/COUNTY-59
             
             
             OrgTechHandle: ZC209-ARIN
             OrgTechName:   County of Marin
             OrgTechPhone:  +1-415-473-3627 
             OrgTechEmail:  eric.newburn@marincounty.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZC209-ARIN
             
             OrgAbuseHandle: ZC209-ARIN
             OrgAbuseName:   County of Marin
             OrgAbusePhone:  +1-415-473-3627 
             OrgAbuseEmail:  eric.newburn@marincounty.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZC209-ARIN
             
             RTechHandle: JN1916-ARIN
             RTechName:   Nakashige, Jan 
             RTechPhone:  +1-415-499-6302 
             RTechEmail:  jnakashi@marin.org
             RTechRef:    https://rdap.arin.net/registry/entity/JN1916-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.
             #