Report for 18773

Name

HENRICO-AS - County of Henrico, 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.

18773 HENRICO-AS - County of Henrico, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7795          LUMOS - LUMOS Networks, Inc., US
    AS21508         COMCAST-21508 - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
18120 AS18773        ORIGIN  Originate:       3840 /20.09  Transit:          0 /0.00  HENRICO-AS - County of Henrico, 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       %
 4455 AS18773       HENRICO-AS - County of Henrico, US                15     14      3      4     11  73.33%


  Prefix               AS Path                              Aggregation Suggestion
  173.242.160.0/21     4608 7575 2914 7795 18773 + Announce - aggregate of 173.242.160.0/22 (4608 7575 2914 7795 18773) and 173.242.164.0/22 (4608 7575 2914 7795 18773)
  173.242.160.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.161.0/24 (4608 7575 2914 7795 18773)
  173.242.161.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.160.0/24 (4608 7575 2914 7795 18773)
  173.242.162.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.163.0/24 (4608 7575 2914 7795 18773)
  173.242.163.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.162.0/24 (4608 7575 2914 7795 18773)
  173.242.164.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.165.0/24 (4608 7575 2914 7795 18773)
  173.242.165.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.164.0/24 (4608 7575 2914 7795 18773)
  173.242.166.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.167.0/24 (4608 7575 2914 7795 18773)
  173.242.167.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.166.0/24 (4608 7575 2914 7795 18773)
  173.242.168.0/22     4608 7575 2914 7795 18773 + Announce - aggregate of 173.242.168.0/23 (4608 7575 2914 7795 18773) and 173.242.170.0/23 (4608 7575 2914 7795 18773)
  173.242.168.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.169.0/24 (4608 7575 2914 7795 18773)
  173.242.169.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.168.0/24 (4608 7575 2914 7795 18773)
  173.242.170.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.171.0/24 (4608 7575 2914 7795 18773)
  173.242.171.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.170.0/24 (4608 7575 2914 7795 18773)
  173.242.172.0/23     4608 7575 2914 7795 18773 + Announce - aggregate of 173.242.172.0/24 (4608 7575 2914 7795 18773) and 173.242.173.0/24 (4608 7575 2914 7795 18773)
  173.242.172.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.173.0/24 (4608 7575 2914 7795 18773)
  173.242.173.0/24     4608 7575 2914 7795 18773 - Withdrawn - aggregated with 173.242.172.0/24 (4608 7575 2914 7795 18773)
  173.242.175.0/24     4608 7575 2914 7795 18773   

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

AS18773   15 More Specifics   15 Total Advertisements   HENRICO-AS - County of Henrico, US
    173.242.160.0/24              173.242.160.0/20
    173.242.161.0/24              173.242.160.0/20
    173.242.162.0/24              173.242.160.0/20
    173.242.163.0/24              173.242.160.0/20
    173.242.164.0/24              173.242.160.0/20
    173.242.165.0/24              173.242.160.0/20
    173.242.166.0/24              173.242.160.0/20
    173.242.167.0/24              173.242.160.0/20
    173.242.168.0/24              173.242.160.0/20
    173.242.169.0/24              173.242.160.0/20
    173.242.170.0/24              173.242.160.0/20
    173.242.171.0/24              173.242.160.0/20
    173.242.172.0/24              173.242.160.0/20
    173.242.173.0/24              173.242.160.0/20
    173.242.175.0/24              173.242.160.0/20

Whois Entry

whois: 402591

IANA has recorded AS18773 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS18773\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:       18773
             ASName:         HENRICO-AS
             ASHandle:       AS18773
             RegDate:        2006-11-17
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/18773
             
             
             OrgName:        County of Henrico
             OrgId:          COUNT-33
             Address:        PO Box 90775
             City:           Henrico
             StateProv:      VA
             PostalCode:     23273-0775
             Country:        US
             RegDate:        2006-10-10
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/COUNT-33
             
             
             OrgTechHandle: NETWO1373-ARIN
             OrgTechName:   Network Technical
             OrgTechPhone:  +1-804-501-7529 
             OrgTechEmail:  net-tech@henrico.us
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO1373-ARIN
             
             OrgAbuseHandle: NETWO1373-ARIN
             OrgAbuseName:   Network Technical
             OrgAbusePhone:  +1-804-501-7529 
             OrgAbuseEmail:  net-tech@henrico.us
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO1373-ARIN
             
             RTechHandle: NETWO1373-ARIN
             RTechName:   Network Technical
             RTechPhone:  +1-804-501-7529 
             RTechEmail:  net-tech@henrico.us
             RTechRef:    https://rdap.arin.net/registry/entity/NETWO1373-ARIN
             
             RAbuseHandle: NETWO1372-ARIN
             RAbuseName:   Network Admin
             RAbusePhone:  +1-804-501-7529 
             RAbuseEmail:  net-admin@henrico.us
             RAbuseRef:    https://rdap.arin.net/registry/entity/NETWO1372-ARIN
             
             RNOCHandle: NETWO1372-ARIN
             RNOCName:   Network Admin
             RNOCPhone:  +1-804-501-7529 
             RNOCEmail:  net-admin@henrico.us
             RNOCRef:    https://rdap.arin.net/registry/entity/NETWO1372-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.
             #