Report for 27529

Name

AS27529 - General Dynamics Information Technology, 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 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.

27529 AS27529 - General Dynamics Information Technology, Inc., US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
28851 AS27529        ORIGIN  Originate:       1792 /21.19  Transit:          0 /0.00  AS27529 - General Dynamics Information Technology, Inc., 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       %
21883 AS27529       AS27529 - General Dynamics Information Techno      7      2      1      6      1  14.29%


  Prefix               AS Path                              Aggregation Suggestion
  12.23.28.0/24        4777 2516 3356 27529   
  12.138.104.0/24      4777 2516 3356 27529   
  12.204.168.0/24      4777 2516 3356 27529   
  12.204.175.0/24      4777 2516 3356 27529   
  12.218.0.0/23        4777 2516 3356 27529 + Announce - aggregate of 12.218.0.0/24 (4777 2516 3356 27529) and 12.218.1.0/24 (4777 2516 3356 27529)
  12.218.0.0/24        4777 2516 3356 27529 - Withdrawn - aggregated with 12.218.1.0/24 (4777 2516 3356 27529)
  12.218.1.0/24        4777 2516 3356 27529 - Withdrawn - aggregated with 12.218.0.0/24 (4777 2516 3356 27529)
  12.218.2.0/24        4777 2516 3356 27529   

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

AS27529   7 More Specifics   7 Total Advertisements   AS27529 - General Dynamics Information Technology, Inc., US
    12.23.28.0/24                 12.0.0.0/8
    12.138.104.0/24               12.0.0.0/8
    12.204.168.0/24               12.0.0.0/8
    12.204.175.0/24               12.0.0.0/8
    12.218.0.0/24                 12.0.0.0/8
    12.218.1.0/24                 12.0.0.0/8
    12.218.2.0/24                 12.0.0.0/8

Whois Entry

whois: 402603

IANA has recorded AS27529 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27529\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:       27529
             ASName:         AS27529
             ASHandle:       AS27529
             RegDate:        2003-03-25
             Updated:        2023-10-03
             Ref:            https://rdap.arin.net/registry/autnum/27529
             
             
             OrgName:        General Dynamics Information Technology, Inc.
             OrgId:          GDIT
             Address:        3150 Fairview Park Drive
             City:           Falls Church
             StateProv:      VA
             PostalCode:     22042
             Country:        US
             RegDate:        2007-02-26
             Updated:        2021-01-16
             Ref:            https://rdap.arin.net/registry/entity/GDIT
             
             
             OrgAbuseHandle: DNSAD189-ARIN
             OrgAbuseName:   dns-admin
             OrgAbusePhone:  +1-800-242-0230 
             OrgAbuseEmail:  dns-admin@gdit.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DNSAD189-ARIN
             
             OrgTechHandle: DNSAD189-ARIN
             OrgTechName:   dns-admin
             OrgTechPhone:  +1-800-242-0230 
             OrgTechEmail:  dns-admin@gdit.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DNSAD189-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.
             #