Report for 12187

Name

MTAHQ1 - Metropolitan Transportation Authority, 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.

12187 MTAHQ1, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887, US
    AS174           COGENT-174, US
    AS54004         OPTIMUM-WIFI2, US
    AS701           UUNET, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
6282  AS12187        ORIGIN  Originate:      23808 /17.46  Transit:          0 /0.00  MTAHQ1, 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       %
 5401 AS12187       MTAHQ1, US                                        16      9      0      7      9  56.25%


  Prefix               AS Path                              Aggregation Suggestion
  170.28.16.0/23       57866 1299 46887 12187   
  170.28.16.0/24       57866 1299 46887 12187 - Withdrawn - matching aggregate 170.28.16.0/23 57866 1299 46887 12187
  170.28.17.0/24       3303 6128 54004 12187   
  170.28.20.0/24       57866 1299 46887 12187 12187 12187 12187 12187 12187   
  170.28.32.0/19       6939 701 12187         
  170.28.64.0/19       2914 174 12187         
  170.28.64.0/24       2914 174 12187       - Withdrawn - matching aggregate 170.28.64.0/19 2914 174 12187
  170.28.128.0/21      2914 174 12187         
  170.28.128.0/24      2914 174 12187       - Withdrawn - matching aggregate 170.28.128.0/21 2914 174 12187
  170.28.136.0/21      6939 701 12187         
  170.28.136.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187
  170.28.137.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187
  170.28.139.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187
  170.28.140.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187
  170.28.142.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187
  170.28.143.0/24      6939 701 12187       - Withdrawn - matching aggregate 170.28.136.0/21 6939 701 12187

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

AS12187   12 More Specifics   12 Total Advertisements   MTAHQ1, US
    170.28.32.0/19                170.28.0.0/16
    170.28.64.0/19                170.28.0.0/16
    170.28.64.0/24                170.28.0.0/16
    170.28.128.0/21               170.28.0.0/16
    170.28.128.0/24               170.28.0.0/16
    170.28.136.0/21               170.28.0.0/16
    170.28.136.0/24               170.28.0.0/16
    170.28.137.0/24               170.28.0.0/16
    170.28.139.0/24               170.28.0.0/16
    170.28.140.0/24               170.28.0.0/16
    170.28.142.0/24               170.28.0.0/16
    170.28.143.0/24               170.28.0.0/16
    170.28.16.0/24                170.28.0.0/16
    170.28.17.0/24                170.28.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 170.28.16.0/24              Withdrawn
    - 170.28.17.0/24              Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS12187 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12187\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:       12187
             ASName:         MTAHQ1
             ASHandle:       AS12187
             RegDate:        1999-04-13
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/12187
             
             
             OrgName:        Metropolitan Transportation Authority
             OrgId:          MTA-41
             Address:        345 Madison Ave 15th flr
             City:           New York
             StateProv:      NY
             PostalCode:     10017
             Country:        US
             RegDate:        1999-04-13
             Updated:        2021-09-29
             Ref:            https://rdap.arin.net/registry/entity/MTA-41
             
             
             OrgAbuseHandle: PB130-ARIN
             OrgAbuseName:   Bernard, Pierre 
             OrgAbusePhone:  +1-212-599-4046 
             OrgAbuseEmail:  pbernard@mtahq.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/PB130-ARIN
             
             OrgTechHandle: PB130-ARIN
             OrgTechName:   Bernard, Pierre 
             OrgTechPhone:  +1-212-599-4046 
             OrgTechEmail:  pbernard@mtahq.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/PB130-ARIN
             
             RTechHandle: PB130-ARIN
             RTechName:   Bernard, Pierre 
             RTechPhone:  +1-212-599-4046 
             RTechEmail:  pbernard@mtahq.org
             RTechRef:    https://rdap.arin.net/registry/entity/PB130-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.
             #