Report for 18830

Name

HMH-18830 - HMH, 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.

18830 HMH-18830 - HMH, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS14742         INTERNAP-BLOCK-4 - Unitas Global, US
    AS19024         INTERNAP-BLK5 - Unitas Global, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
35400 AS18830        ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  HMH-18830 - HMH, 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       %
21486 AS18830       HMH-18830 - HMH, US                                3      2      1      2      1  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  208.85.124.0/23      4777 1828 14742 14742 18830 + Announce - aggregate of 208.85.124.0/24 (4777 1828 14742 14742 18830) and 208.85.125.0/24 (4777 1828 14742 14742 18830)
  208.85.124.0/24      4777 1828 14742 14742 18830 - Withdrawn - aggregated with 208.85.125.0/24 (4777 1828 14742 14742 18830)
  208.85.125.0/24      4777 1828 14742 14742 18830 - Withdrawn - aggregated with 208.85.124.0/24 (4777 1828 14742 14742 18830)
  208.85.126.0/23      4777 1828 19024 18830   

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

AS18830   3 More Specifics   3 Total Advertisements   HMH-18830 - HMH, US
    208.85.124.0/24               208.85.124.0/22
    208.85.125.0/24               208.85.124.0/22
    208.85.126.0/23               208.85.124.0/22

Whois Entry

whois: 402332

IANA has recorded AS18830 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS18830\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:       18830
             ASName:         HMH-18830
             ASHandle:       AS18830
             RegDate:        2007-12-19
             Updated:        2015-12-23
             Ref:            https://rdap.arin.net/registry/autnum/18830
             
             
             OrgName:        HMH
             OrgId:          HOUGH-3
             Address:        125 High Street
             City:           Boston
             StateProv:      MA
             PostalCode:     02110
             Country:        US
             RegDate:        2009-05-21
             Updated:        2024-12-20
             Ref:            https://rdap.arin.net/registry/entity/HOUGH-3
             
             
             OrgAbuseHandle: NETWO380-ARIN
             OrgAbuseName:   Network Manager
             OrgAbusePhone:  +1-617-351-5000 
             OrgAbuseEmail:  netadmin@hmhco.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO380-ARIN
             
             OrgTechHandle: NETWO380-ARIN
             OrgTechName:   Network Manager
             OrgTechPhone:  +1-617-351-5000 
             OrgTechEmail:  netadmin@hmhco.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO380-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.
             #