Report for 54439

Name

MCGM-FIBERNET3 - Montgomery County Government, Maryland, 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.

54439 MCGM-FIBERNET3, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS40468         MONTGOMERYCOUNTYMDGOV, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15286 AS54439        ORIGIN  Originate:       5120 /19.68  Transit:          0 /0.00  MCGM-FIBERNET3, 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       %
 4787 AS54439       MCGM-FIBERNET3, US                                20     16      5      9     11  55.00%


  Prefix               AS Path                              Aggregation Suggestion
  192.26.21.0/24       6939 40468 54439       
  192.41.166.0/23      6939 40468 54439     + Announce - aggregate of 192.41.166.0/24 (6939 40468 54439) and 192.41.167.0/24 (6939 40468 54439)
  192.41.166.0/24      6939 40468 54439     - Withdrawn - aggregated with 192.41.167.0/24 (6939 40468 54439)
  192.41.167.0/24      6939 40468 54439     - Withdrawn - aggregated with 192.41.166.0/24 (6939 40468 54439)
  192.41.168.0/23      6939 40468 54439     + Announce - aggregate of 192.41.168.0/24 (6939 40468 54439) and 192.41.169.0/24 (6939 40468 54439)
  192.41.168.0/24      6939 40468 54439     - Withdrawn - aggregated with 192.41.169.0/24 (6939 40468 54439)
  192.41.169.0/24      6939 40468 54439     - Withdrawn - aggregated with 192.41.168.0/24 (6939 40468 54439)
  208.76.112.0/24      6939 40468 54439       
  208.76.114.0/23      6939 40468 54439     + Announce - aggregate of 208.76.114.0/24 (6939 40468 54439) and 208.76.115.0/24 (6939 40468 54439)
  208.76.114.0/24      6939 40468 54439     - Withdrawn - aggregated with 208.76.115.0/24 (6939 40468 54439)
  208.76.115.0/24      6939 40468 54439     - Withdrawn - aggregated with 208.76.114.0/24 (6939 40468 54439)
  208.76.116.0/23      6939 40468 54439     + Announce - aggregate of 208.76.116.0/24 (6939 40468 54439) and 208.76.117.0/24 (6939 40468 54439)
  208.76.116.0/24      6939 40468 54439     - Withdrawn - aggregated with 208.76.117.0/24 (6939 40468 54439)
  208.76.117.0/24      6939 40468 54439     - Withdrawn - aggregated with 208.76.116.0/24 (6939 40468 54439)
  208.76.119.0/24      6939 40468 54439       
  213.18.192.0/21      6939 40468 54439     + Announce - aggregate of 213.18.192.0/22 (6939 40468 54439) and 213.18.196.0/22 (6939 40468 54439)
  213.18.192.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.193.0/24 (6939 40468 54439)
  213.18.193.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.192.0/24 (6939 40468 54439)
  213.18.194.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.195.0/24 (6939 40468 54439)
  213.18.195.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.194.0/24 (6939 40468 54439)
  213.18.196.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.197.0/24 (6939 40468 54439)
  213.18.197.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.196.0/24 (6939 40468 54439)
  213.18.198.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.199.0/24 (6939 40468 54439)
  213.18.199.0/24      6939 40468 54439     - Withdrawn - aggregated with 213.18.198.0/24 (6939 40468 54439)
  213.18.200.0/24      6939 40468 54439       

Whois Entry

whois: 402590

IANA has recorded AS54439 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS54439\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:       54439
             ASName:         MCGM-FIBERNET3
             ASHandle:       AS54439
             RegDate:        2020-12-31
             Updated:        2021-03-08
             Ref:            https://rdap.arin.net/registry/autnum/54439
             
             
             OrgName:        Montgomery County Government, Maryland
             OrgId:          MCGM
             Address:        100 Maryland Ave.
             Address:        Suite 300
             City:           Rockville
             StateProv:      MD
             PostalCode:     20850
             Country:        US
             RegDate:        2006-10-12
             Updated:        2025-10-07
             Ref:            https://rdap.arin.net/registry/entity/MCGM
             
             
             OrgDNSHandle: MDG40-ARIN
             OrgDNSName:   Gardner, Mark Daniel
             OrgDNSPhone:  +1-240-773-8116 
             OrgDNSEmail:  mark.gardner@montgomerycountymd.gov
             OrgDNSRef:    https://rdap.arin.net/registry/entity/MDG40-ARIN
             
             OrgDNSHandle: RGS11-ARIN
             OrgDNSName:   Shields, Robert Gene
             OrgDNSPhone:  +1-703-283-3884 
             OrgDNSEmail:  rob.shields@montgomerycountymd.gov
             OrgDNSRef:    https://rdap.arin.net/registry/entity/RGS11-ARIN
             
             OrgRoutingHandle: RGS11-ARIN
             OrgRoutingName:   Shields, Robert Gene
             OrgRoutingPhone:  +1-703-283-3884 
             OrgRoutingEmail:  rob.shields@montgomerycountymd.gov
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/RGS11-ARIN
             
             OrgTechHandle: RMN9-ARIN
             OrgTechName:   Nussey, Roderick MacIntyre
             OrgTechPhone:  +1-240-777-2110 
             OrgTechEmail:  rod.nussey@montgomerycountymd.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/RMN9-ARIN
             
             OrgNOCHandle: MDG40-ARIN
             OrgNOCName:   Gardner, Mark Daniel
             OrgNOCPhone:  +1-240-773-8116 
             OrgNOCEmail:  mark.gardner@montgomerycountymd.gov
             OrgNOCRef:    https://rdap.arin.net/registry/entity/MDG40-ARIN
             
             OrgAbuseHandle: WEBST183-ARIN
             OrgAbuseName:   Webster, Joe 
             OrgAbusePhone:  +1-240-268-4926 
             OrgAbuseEmail:  joseph.webster@montgomerycountymd.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/WEBST183-ARIN
             
             OrgTechHandle: RGS11-ARIN
             OrgTechName:   Shields, Robert Gene
             OrgTechPhone:  +1-703-283-3884 
             OrgTechEmail:  rob.shields@montgomerycountymd.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/RGS11-ARIN
             
             OrgAbuseHandle: RGS11-ARIN
             OrgAbuseName:   Shields, Robert Gene
             OrgAbusePhone:  +1-703-283-3884 
             OrgAbuseEmail:  rob.shields@montgomerycountymd.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/RGS11-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.
             #