Report for 22238

Name

DARPA - Defense Advanced Research Projects Agency(DARPA), 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.

22238 DARPA - Defense Advanced Research Projects Agency(DARPA), US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174 - Cogent Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
3352  AS22238        ORIGIN  Originate:      66304 /15.98  Transit:          0 /0.00  DARPA - Defense Advanced Research Projects Agency(DARPA), 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       %
21573 AS22238       DARPA - Defense Advanced Research Projects Ag      4      1      0      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  158.63.0.0/16        4777 2516 174 22238    
  158.63.250.0/24      4777 2516 174 22238  - Withdrawn - matching aggregate 158.63.0.0/16 4777 2516 174 22238
  192.5.18.0/24        4777 2516 174 22238    
  192.187.8.0/24       4777 2516 174 22238    

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

AS22238   1 More Specifics   4 Total Advertisements   DARPA - Defense Advanced Research Projects Agency(DARPA), US
    158.63.250.0/24               158.63.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS22238 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS22238\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:       22238
             ASName:         DARPA
             ASHandle:       AS22238
             RegDate:        2001-08-23
             Updated:        2001-08-23
             Ref:            https://rdap.arin.net/registry/autnum/22238
             
             
             OrgName:        Defense Advanced Research Projects Agency(DARPA)
             OrgId:          DARPA-2
             Address:        3701 N. Fairfax Dr.
             City:           Arlington
             StateProv:      VA
             PostalCode:     22203
             Country:        US
             RegDate:        2001-08-23
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/DARPA-2
             
             
             OrgAbuseHandle: ACR14-ARIN
             OrgAbuseName:   Richmond, Alfred C
             OrgAbusePhone:  +1-703-526-4012 
             OrgAbuseEmail:  arichmond@snap.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ACR14-ARIN
             
             OrgTechHandle: ACR14-ARIN
             OrgTechName:   Richmond, Alfred C
             OrgTechPhone:  +1-703-526-4012 
             OrgTechEmail:  arichmond@snap.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/ACR14-ARIN
             
             RTechHandle: SJ395-ARIN
             RTechName:   Junta, Sam 
             RTechPhone:  +1-703-526-4076 
             RTechEmail:  sjunta@snap.org
             RTechRef:    https://rdap.arin.net/registry/entity/SJ395-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.
             #