Report for 11829

Name

CADENCE - Cadence Design Systems, 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.

11829 CADENCE - Cadence Design Systems, Inc., US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS33667         CMCS - Comcast Cable Communications, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS33651         CMCS - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
30312 AS11829        ORIGIN  Originate:       1536 /21.42  Transit:          0 /0.00  CADENCE - Cadence Design Systems, 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       %
33013 AS11829       CADENCE - Cadence Design Systems, Inc., US         6      0      0      6      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  158.140.1.0/24       4777 2516 7922 33651 11829   
  158.140.2.0/24       4777 2516 7922 33651 11829   
  158.140.5.0/24       4777 2516 7922 33651 11829   
  192.190.239.0/24     4777 2516 7922 33651 11829   
  192.203.56.0/24      4777 2516 7922 33651 11829   
  199.43.4.0/24        4777 2497 3356 11829   

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

AS11829   5 More Specifics   6 Total Advertisements   CADENCE - Cadence Design Systems, Inc., US
    158.140.1.0/24                158.140.0.0/21
    158.140.2.0/24                158.140.0.0/21
    158.140.5.0/24                158.140.0.0/21
    192.203.56.0/24               192.203.48.0/20
    199.43.4.0/24                 199.43.4.0/22

Whois Entry

whois: 402332

IANA has recorded AS11829 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11829\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:       11829
             ASName:         CADENCE
             ASHandle:       AS11829
             RegDate:        1999-01-05
             Updated:        2006-01-12
             Ref:            https://rdap.arin.net/registry/autnum/11829
             
             
             OrgName:        Cadence Design Systems, Inc.
             OrgId:          CDS-16
             Address:        2655 Seely Ave
             City:           San Jose
             StateProv:      CA
             PostalCode:     95134
             Country:        US
             RegDate:        1991-05-01
             Updated:        2018-02-14
             Ref:            https://rdap.arin.net/registry/entity/CDS-16
             
             
             OrgTechHandle: HOSTM2078-ARIN
             OrgTechName:   Hostmaster
             OrgTechPhone:  +1-408-943-1234 
             OrgTechEmail:  isp-notification@cadence.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM2078-ARIN
             
             OrgAbuseHandle: HOSTM2078-ARIN
             OrgAbuseName:   Hostmaster
             OrgAbusePhone:  +1-408-943-1234 
             OrgAbuseEmail:  isp-notification@cadence.com
             OrgAbuseRef:    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.
             #