Report for 12236

Name

HANOVER - Hanover Insurance Group, 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 AS6447) 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.

12236 HANOVER, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS32298         EVOQUE, US
    AS7018          ATT-INTERNET4, US
    AS46887         CROWNCASTLE-AS46887, US
    AS701           UUNET, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
35241 AS12236        ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  HANOVER, 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       %
32995 AS12236       HANOVER, US                                        4      0      0      4      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  192.147.221.0/24     57866 1299 46887 12236   
  192.147.222.0/24     3257 701 12236         
  192.147.223.0/24     293 3356 32298 12236   
  192.147.224.0/24     3257 701 12236         

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

AS12236   3 More Specifics   4 Total Advertisements   HANOVER, US
    192.147.221.0/24              192.147.220.0/22
    192.147.222.0/24              192.147.220.0/22
    192.147.223.0/24              192.147.220.0/22

Whois Entry

whois: 402590

IANA has recorded AS12236 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12236\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:       12236
             ASName:         HANOVER
             ASHandle:       AS12236
             RegDate:        2010-12-08
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/12236
             
             
             OrgName:        Hanover Insurance Group, Inc.
             OrgId:          FAFL
             Address:        440 Lincoln St.
             City:           Worcester
             StateProv:      MA
             PostalCode:     01653
             Country:        US
             RegDate:        
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/FAFL
             
             
             OrgTechHandle: HOSTM1640-ARIN
             OrgTechName:   Hostmaster
             OrgTechPhone:  +1-508-855-1000 
             OrgTechEmail:  hostmaster@hanover.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM1640-ARIN
             
             OrgAbuseHandle: HOSTM1640-ARIN
             OrgAbuseName:   Hostmaster
             OrgAbusePhone:  +1-508-855-1000 
             OrgAbuseEmail:  hostmaster@hanover.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM1640-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.
             #