Report for 187

Name

DNSCAST-AS - DNScast, 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.

187 DNSCAST-AS - DNScast, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS42            WOODYNET-1 - WoodyNet, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15797 AS187          ORIGIN  Originate:       4608 /19.83  Transit:          0 /0.00  DNSCAST-AS - DNScast, 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       %
 3438 AS187         DNSCAST-AS - DNScast, US                          17     16      1      2     15  88.24%


  Prefix               AS Path                              Aggregation Suggestion
  72.42.112.0/20       4777 42 187          + Announce - aggregate of 72.42.112.0/21 (4777 42 187) and 72.42.120.0/21 (4777 42 187)
  72.42.112.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.113.0/24 (4777 42 187)
  72.42.113.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.112.0/24 (4777 42 187)
  72.42.114.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.115.0/24 (4777 42 187)
  72.42.115.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.114.0/24 (4777 42 187)
  72.42.116.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.117.0/24 (4777 42 187)
  72.42.117.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.116.0/24 (4777 42 187)
  72.42.118.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.119.0/24 (4777 42 187)
  72.42.119.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.118.0/24 (4777 42 187)
  72.42.120.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.121.0/24 (4777 42 187)
  72.42.121.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.120.0/24 (4777 42 187)
  72.42.122.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.123.0/24 (4777 42 187)
  72.42.123.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.122.0/24 (4777 42 187)
  72.42.124.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.125.0/24 (4777 42 187)
  72.42.125.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.124.0/24 (4777 42 187)
  72.42.126.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.127.0/24 (4777 42 187)
  72.42.127.0/24       4777 42 187          - Withdrawn - aggregated with 72.42.126.0/24 (4777 42 187)
  203.119.88.0/23      4777 42 187            

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

AS187   16 More Specifics   17 Total Advertisements   DNSCAST-AS - DNScast, US
    72.42.112.0/24                72.42.112.0/20
    72.42.113.0/24                72.42.112.0/20
    72.42.114.0/24                72.42.112.0/20
    72.42.115.0/24                72.42.112.0/20
    72.42.116.0/24                72.42.112.0/20
    72.42.117.0/24                72.42.112.0/20
    72.42.118.0/24                72.42.112.0/20
    72.42.119.0/24                72.42.112.0/20
    72.42.120.0/24                72.42.112.0/20
    72.42.121.0/24                72.42.112.0/20
    72.42.122.0/24                72.42.112.0/20
    72.42.123.0/24                72.42.112.0/20
    72.42.124.0/24                72.42.112.0/20
    72.42.125.0/24                72.42.112.0/20
    72.42.126.0/24                72.42.112.0/20
    72.42.127.0/24                72.42.112.0/20

Whois Entry

whois: 402332

IANA has recorded AS187 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS187\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:       187
             ASName:         DNSCAST-AS
             ASHandle:       AS187
             RegDate:        2009-07-22
             Updated:        2012-03-20
             Ref:            https://rdap.arin.net/registry/autnum/187
             
             
             OrgName:        DNScast
             OrgId:          WOODY-2
             Address:        2351 Virginia Street
             City:           Berkeley
             StateProv:      CA
             PostalCode:     94709-1315
             Country:        US
             RegDate:        2009-07-21
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/WOODY-2
             
             
             OrgAbuseHandle: BW1324-ARIN
             OrgAbuseName:   Woodcock, Bill 
             OrgAbusePhone:  +1-415-831-3103 
             OrgAbuseEmail:  woody@pch.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/BW1324-ARIN
             
             OrgTechHandle: BW1324-ARIN
             OrgTechName:   Woodcock, Bill 
             OrgTechPhone:  +1-415-831-3103 
             OrgTechEmail:  woody@pch.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/BW1324-ARIN
             
             RTechHandle: BW1324-ARIN
             RTechName:   Woodcock, Bill 
             RTechPhone:  +1-415-831-3103 
             RTechEmail:  woody@pch.net
             RTechRef:    https://rdap.arin.net/registry/entity/BW1324-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.
             #