Report for 3713

Name

ICFCONSULTINGGROUPINC - ICF International, 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.

3713 ICFCONSULTINGGROUPINC - ICF International, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS20355         NTG-AS - REV, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS393423        NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
12433 AS3713         ORIGIN  Originate:       7680 /19.09  Transit:          0 /0.00  ICFCONSULTINGGROUPINC - ICF International, 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       %
 4874 AS3713        ICFCONSULTINGGROUPINC - ICF International, US     17     12      2      7     10  58.82%


  Prefix               AS Path                              Aggregation Suggestion
  199.223.16.0/21      4777 2516 3257 20355 3713   
  199.223.16.0/21      4777 2516 3356 3713  + Announce - aggregate of 199.223.16.0/22 (4777 2516 3356 3713) and 199.223.20.0/22 (4777 2516 3356 3713)
  199.223.16.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.17.0/24 (4777 2516 3356 3713)
  199.223.17.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.16.0/24 (4777 2516 3356 3713)
  199.223.18.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.19.0/24 (4777 2516 3356 3713)
  199.223.19.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.18.0/24 (4777 2516 3356 3713)
  199.223.20.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.21.0/24 (4777 2516 3356 3713)
  199.223.21.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.20.0/24 (4777 2516 3356 3713)
  199.223.22.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.23.0/24 (4777 2516 3356 3713)
  199.223.23.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.22.0/24 (4777 2516 3356 3713)
  199.223.24.0/22      4777 2516 3257 20355 3713   
  199.223.24.0/24      4777 2516 3356 3713    
  199.223.27.0/24      4777 2516 3356 3713    
  199.223.28.0/22      4777 2516 3356 393423 3713 3713 3713   
  199.223.28.0/22      4777 2516 3356 3713  + Announce - aggregate of 199.223.28.0/23 (4777 2516 3356 3713) and 199.223.30.0/23 (4777 2516 3356 3713)
  199.223.28.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.29.0/24 (4777 2516 3356 3713)
  199.223.29.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.28.0/24 (4777 2516 3356 3713)
  199.223.30.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.31.0/24 (4777 2516 3356 3713)
  199.223.31.0/24      4777 2516 3356 3713  - Withdrawn - aggregated with 199.223.30.0/24 (4777 2516 3356 3713)

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

AS3713   17 More Specifics   17 Total Advertisements   ICFCONSULTINGGROUPINC - ICF International, US
    199.223.16.0/21               199.223.16.0/20
    199.223.16.0/24               199.223.16.0/20
    199.223.17.0/24               199.223.16.0/20
    199.223.18.0/24               199.223.16.0/20
    199.223.19.0/24               199.223.16.0/20
    199.223.20.0/24               199.223.16.0/20
    199.223.21.0/24               199.223.16.0/20
    199.223.22.0/24               199.223.16.0/20
    199.223.23.0/24               199.223.16.0/20
    199.223.24.0/22               199.223.16.0/20
    199.223.24.0/24               199.223.16.0/20
    199.223.27.0/24               199.223.16.0/20
    199.223.28.0/22               199.223.16.0/20
    199.223.28.0/24               199.223.16.0/20
    199.223.29.0/24               199.223.16.0/20
    199.223.30.0/24               199.223.16.0/20
    199.223.31.0/24               199.223.16.0/20

Whois Entry

whois: 402332

IANA has recorded AS3713 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3713\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:       3713
             ASName:         ICFCONSULTINGGROUPINC
             ASHandle:       AS3713
             RegDate:        1994-07-13
             Updated:        2014-01-16
             Ref:            https://rdap.arin.net/registry/autnum/3713
             
             
             OrgName:        ICF International
             OrgId:          ICG-67
             Address:        1902 Reston Metro Plaza
             City:           Reston
             StateProv:      VA
             PostalCode:     20190
             Country:        US
             RegDate:        2013-12-05
             Updated:        2023-08-03
             Ref:            https://rdap.arin.net/registry/entity/ICG-67
             
             
             OrgNOCHandle: ARINI2-ARIN
             OrgNOCName:   ARIN, ICF 
             OrgNOCPhone:  +1-703-934-3000 
             OrgNOCEmail:  arin@icfi.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ARINI2-ARIN
             
             OrgTechHandle: ARINI2-ARIN
             OrgTechName:   ARIN, ICF 
             OrgTechPhone:  +1-703-934-3000 
             OrgTechEmail:  arin@icfi.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ARINI2-ARIN
             
             OrgAbuseHandle: ARINI2-ARIN
             OrgAbuseName:   ARIN, ICF 
             OrgAbusePhone:  +1-703-934-3000 
             OrgAbuseEmail:  arin@icfi.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ARINI2-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.
             #