Report for 11690

Name

COGNIZANT-US - Cognizant, 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.

11690 COGNIZANT-US - Cognizant, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
21343 AS11690        ORIGIN  Originate:       2816 /20.54  Transit:          0 /0.00  COGNIZANT-US - Cognizant, 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       %
20493 AS11690       COGNIZANT-US - Cognizant, US                       5      2      1      4      1  20.00%


  Prefix               AS Path                              Aggregation Suggestion
  27.118.33.0/24       4777 2497 6461 11690   
  198.212.56.0/21      4777 2497 6461 11690 + Announce - aggregate of 198.212.56.0/22 (4777 2497 6461 11690) and 198.212.60.0/22 (4777 2497 6461 11690)
  198.212.56.0/22      4777 2497 6461 11690 - Withdrawn - aggregated with 198.212.60.0/22 (4777 2497 6461 11690)
  198.212.60.0/22      4777 2497 6461 11690 - Withdrawn - aggregated with 198.212.56.0/22 (4777 2497 6461 11690)
  209.51.51.0/24       4777 2497 6461 11690   
  209.51.61.0/24       4777 2497 6461 11690   

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

AS11690   3 More Specifics   5 Total Advertisements   COGNIZANT-US - Cognizant, US
    27.118.33.0/24                27.118.32.0/19
    198.212.56.0/22               198.212.56.0/21
    198.212.60.0/22               198.212.56.0/21

Bogus Prefixes Announced by this AS

Prefix	Origin AS	AS Description	Unallocated block
209.51.51.0/24	AS11690	COGNIZANT-US - Cognizant, US	209.51.48.0 - 209.51.63.255
209.51.61.0/24	AS11690	COGNIZANT-US - Cognizant, US	209.51.48.0 - 209.51.63.255

Whois Entry

whois: 402332

IANA has recorded AS11690 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11690\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:       11690
             ASName:         COGNIZANT-US
             ASHandle:       AS11690
             RegDate:        2012-09-21
             Updated:        2012-09-21
             Ref:            https://rdap.arin.net/registry/autnum/11690
             
             
             OrgName:        Cognizant
             OrgId:          CTSUC
             Address:        500 Frank W Burr  Blvd
             City:           Teaneck
             StateProv:      NJ
             PostalCode:     07666
             Country:        US
             RegDate:        2012-08-09
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/CTSUC
             
             
             OrgAbuseHandle: IRTTE-ARIN
             OrgAbuseName:   IRT Team
             OrgAbusePhone:  +1-866-822-2024 
             OrgAbuseEmail:  Abuse@Cognizant.Com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/IRTTE-ARIN
             
             OrgTechHandle: NETWO9925-ARIN
             OrgTechName:   Network Administrator
             OrgTechPhone:  +1-201-472-7000 
             OrgTechEmail:  connect@cognizant.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO9925-ARIN
             
             OrgNOCHandle: NETWO9925-ARIN
             OrgNOCName:   Network Administrator
             OrgNOCPhone:  +1-201-472-7000 
             OrgNOCEmail:  connect@cognizant.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO9925-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.
             #