Report for 400571

Name

CADENCE-ATL - CDNS, 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.

400571 CADENCE-ATL, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS6461          ZAYO-6461, US
    AS7725          COMCAST-7725, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
58066 AS400571       ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  CADENCE-ATL, 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       %
77328 AS400571      CADENCE-ATL, US                                    2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  158.140.0.0/24       2152 7922 7725 400571   
  158.140.7.0/24       7018 6461 400571 400571   

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

AS400571   1 More Specifics   1 Total Advertisements   CADENCE-ATL, US
    158.140.7.0/24                158.140.0.0/21

Whois Entry

whois: 402549

IANA has recorded AS400571 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS400571\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:       400571
             ASName:         CADENCE-ATL
             ASHandle:       AS400571
             RegDate:        2022-03-28
             Updated:        2022-03-28
             Ref:            https://rdap.arin.net/registry/autnum/400571
             
             
             OrgName:        CDNS
             OrgId:          CDS-370
             Address:        2655 Seely Ave
             Address:        Building 7
             City:           San Jose
             StateProv:      CA
             PostalCode:     95134
             Country:        US
             RegDate:        2018-03-22
             Updated:        2018-03-22
             Ref:            https://rdap.arin.net/registry/entity/CDS-370
             
             
             OrgAbuseHandle: HOSTM2078-ARIN
             OrgAbuseName:   Hostmaster
             OrgAbusePhone:  +1-408-943-1234 
             OrgAbuseEmail:  isp-notification@cadence.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM2078-ARIN
             
             OrgTechHandle: HOSTM2078-ARIN
             OrgTechName:   Hostmaster
             OrgTechPhone:  +1-408-943-1234 
             OrgTechEmail:  isp-notification@cadence.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM2078-ARIN
             
             OrgNOCHandle: HOSTM2078-ARIN
             OrgNOCName:   Hostmaster
             OrgNOCPhone:  +1-408-943-1234 
             OrgNOCEmail:  isp-notification@cadence.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/HOSTM2078-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.
             #