Report for 3828

Name

CIRRUS - Cirrus Logic 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.

3828 CIRRUS - Cirrus Logic Inc., US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS62            CONE - CyrusOne LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24131 AS3828         ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  CIRRUS - Cirrus Logic 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       %
 9414 AS3828        CIRRUS - Cirrus Logic Inc., US                     5      4      0      1      4  80.00%


  Prefix               AS Path                              Aggregation Suggestion
  141.131.0.0/22       4777 2516 3257 62 3828   
  141.131.0.0/24       4777 2516 3257 62 3828 - Withdrawn - matching aggregate 141.131.0.0/22 4777 2516 3257 62 3828
  141.131.1.0/24       4777 2516 3257 62 3828 - Withdrawn - matching aggregate 141.131.0.0/22 4777 2516 3257 62 3828
  141.131.2.0/24       4777 2516 3257 62 3828 - Withdrawn - matching aggregate 141.131.0.0/22 4777 2516 3257 62 3828
  141.131.3.0/24       4777 2516 3257 62 3828 - Withdrawn - matching aggregate 141.131.0.0/22 4777 2516 3257 62 3828

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

AS3828   5 More Specifics   5 Total Advertisements   CIRRUS - Cirrus Logic Inc., US
    141.131.0.0/22                141.131.0.0/16
    141.131.0.0/24                141.131.0.0/16
    141.131.1.0/24                141.131.0.0/16
    141.131.2.0/24                141.131.0.0/16
    141.131.3.0/24                141.131.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS3828 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3828\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:       3828
             ASName:         CIRRUS
             ASHandle:       AS3828
             RegDate:        1994-09-16
             Updated:        2012-03-29
             Ref:            https://rdap.arin.net/registry/autnum/3828
             
             
             OrgName:        Cirrus Logic Inc.
             OrgId:          CIRRUS
             Address:        800 W. 6th Street
             City:           Austin
             StateProv:      TX
             PostalCode:     78701
             Country:        US
             RegDate:        1990-07-24
             Updated:        2014-05-09
             Ref:            https://rdap.arin.net/registry/entity/CIRRUS
             
             
             OrgAbuseHandle: MJT39-ARIN
             OrgAbuseName:   Tetzlaff, Michael John
             OrgAbusePhone:  +1-512-851-4626 
             OrgAbuseEmail:  nic@cirrus.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MJT39-ARIN
             
             OrgTechHandle: MJT39-ARIN
             OrgTechName:   Tetzlaff, Michael John
             OrgTechPhone:  +1-512-851-4626 
             OrgTechEmail:  nic@cirrus.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MJT39-ARIN
             
             OrgNOCHandle: MJT39-ARIN
             OrgNOCName:   Tetzlaff, Michael John
             OrgNOCPhone:  +1-512-851-4626 
             OrgNOCEmail:  nic@cirrus.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/MJT39-ARIN
             
             RTechHandle: MJT39-ARIN
             RTechName:   Tetzlaff, Michael John
             RTechPhone:  +1-512-851-4626 
             RTechEmail:  nic@cirrus.com
             RTechRef:    https://rdap.arin.net/registry/entity/MJT39-ARIN
             
             RNOCHandle: MJT39-ARIN
             RNOCName:   Tetzlaff, Michael John
             RNOCPhone:  +1-512-851-4626 
             RNOCEmail:  nic@cirrus.com
             RNOCRef:    https://rdap.arin.net/registry/entity/MJT39-ARIN
             
             RAbuseHandle: MJT39-ARIN
             RAbuseName:   Tetzlaff, Michael John
             RAbusePhone:  +1-512-851-4626 
             RAbuseEmail:  nic@cirrus.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/MJT39-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.
             #