Report for 10857

Name

JCPENNEY-AS - JCPenney, 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.

10857 JCPENNEY-AS - JCPenney, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS20231         TWC-20231-NE-KS-C3 - Charter Communications Inc, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS5650          FRONTIER-FRTR - Frontier Communications of America, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4870  AS10857        ORIGIN  Originate:      38656 /16.76  Transit:          0 /0.00  JCPENNEY-AS - JCPenney, 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       %
 6230 AS10857       JCPENNEY-AS - JCPenney, US                        22     11      4     15      7  31.82%


  Prefix               AS Path                              Aggregation Suggestion
  146.235.64.0/18      4777 2497 3356 10857   
  146.235.66.0/23      4777 2516 3356 10857 + Announce - aggregate of 146.235.66.0/24 (4777 2516 3356 10857) and 146.235.67.0/24 (4777 2516 3356 10857)
  146.235.66.0/24      4777 2516 3356 10857 - Withdrawn - aggregated with 146.235.67.0/24 (4777 2516 3356 10857)
  146.235.67.0/24      4777 2516 3356 10857 - Withdrawn - aggregated with 146.235.66.0/24 (4777 2516 3356 10857)
  146.235.83.0/24      4777 2516 3356 10857   
  146.235.84.0/23      4777 2516 3356 10857   
  146.235.86.0/24      4777 2516 3356 10857   
  146.235.87.0/24      4777 2497 3356 10857 - Withdrawn - matching aggregate 146.235.64.0/18 4777 2497 3356 10857
  146.235.88.0/23      4777 2497 3356 10857 - Withdrawn - matching aggregate 146.235.64.0/18 4777 2497 3356 10857
  146.235.88.0/23      4777 2516 3257 20115 20231 10857 + Announce - aggregate of 146.235.88.0/24 (4777 2516 3257 20115 20231 10857) and 146.235.89.0/24 (4777 2516 3257 20115 20231 10857)
  146.235.88.0/24      4777 2516 3257 20115 20231 10857 - Withdrawn - aggregated with 146.235.89.0/24 (4777 2516 3257 20115 20231 10857)
  146.235.89.0/24      4777 2516 3257 20115 20231 10857 - Withdrawn - aggregated with 146.235.88.0/24 (4777 2516 3257 20115 20231 10857)
  146.235.90.0/24      4777 2516 3257 20115 20231 10857   
  146.235.128.0/18     4777 2497 3356 10857   
  146.235.129.0/24     4777 2497 7018 10857   
  146.235.134.0/23     4777 2497 7018 10857   
  146.235.138.0/23     4777 2497 7018 10857 + Announce - aggregate of 146.235.138.0/24 (4777 2497 7018 10857) and 146.235.139.0/24 (4777 2497 7018 10857)
  146.235.138.0/24     4777 2497 7018 10857 - Withdrawn - aggregated with 146.235.139.0/24 (4777 2497 7018 10857)
  146.235.139.0/24     4777 2497 7018 10857 - Withdrawn - aggregated with 146.235.138.0/24 (4777 2497 7018 10857)
  146.235.140.0/23     4777 2516 3356 10857 + Announce - aggregate of 146.235.140.0/24 (4777 2516 3356 10857) and 146.235.141.0/24 (4777 2516 3356 10857)
  146.235.140.0/24     4777 2516 3356 10857 - Withdrawn - aggregated with 146.235.141.0/24 (4777 2516 3356 10857)
  146.235.141.0/24     4777 2516 3356 10857 - Withdrawn - aggregated with 146.235.140.0/24 (4777 2516 3356 10857)
  146.235.143.0/24     4777 2497 3356 10857 - Withdrawn - matching aggregate 146.235.128.0/18 4777 2497 3356 10857
  146.235.180.0/24     4777 2516 701 5650 10857   
  146.235.183.0/24     4777 2497 7018 10857   
  146.235.190.0/24     4777 2516 3356 10857   

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

AS10857   20 More Specifics   22 Total Advertisements   JCPENNEY-AS - JCPenney, US
    146.235.66.0/24               146.235.64.0/18
    146.235.67.0/24               146.235.64.0/18
    146.235.83.0/24               146.235.64.0/18
    146.235.84.0/23               146.235.64.0/18
    146.235.86.0/24               146.235.64.0/18
    146.235.87.0/24               146.235.64.0/18
    146.235.88.0/23               146.235.64.0/18
    146.235.88.0/24               146.235.64.0/18
    146.235.89.0/24               146.235.64.0/18
    146.235.90.0/24               146.235.64.0/18
    146.235.129.0/24              146.235.128.0/18
    146.235.134.0/23              146.235.128.0/18
    146.235.138.0/24              146.235.128.0/18
    146.235.139.0/24              146.235.128.0/18
    146.235.140.0/24              146.235.128.0/18
    146.235.141.0/24              146.235.128.0/18
    146.235.143.0/24              146.235.128.0/18
    146.235.180.0/24              146.235.128.0/18
    146.235.183.0/24              146.235.128.0/18
    146.235.190.0/24              146.235.128.0/18

Whois Entry

whois: 402599

IANA has recorded AS10857 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS10857\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:       10857
             ASName:         JCPENNEY-AS
             ASHandle:       AS10857
             RegDate:        1997-12-12
             Updated:        2022-07-05
             Ref:            https://rdap.arin.net/registry/autnum/10857
             
             
             OrgName:        JCPenney
             OrgId:          POL-42-Z
             Address:        2401 S. Stemmons Freeway, Suite 4000
             City:           Lewisville
             StateProv:      TX
             PostalCode:     75067
             Country:        US
             RegDate:        2022-05-12
             Updated:        2022-05-12
             Ref:            https://rdap.arin.net/registry/entity/POL-42-Z
             
             
             OrgNOCHandle: IJ30-ARIN
             OrgNOCName:   Domain Admin
             OrgNOCPhone:  +1-972-431-1000 
             OrgNOCEmail:  domainadmin@jcpenney.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/IJ30-ARIN
             
             OrgTechHandle: IJ30-ARIN
             OrgTechName:   Domain Admin
             OrgTechPhone:  +1-972-431-1000 
             OrgTechEmail:  domainadmin@jcpenney.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IJ30-ARIN
             
             OrgAbuseHandle: IJ30-ARIN
             OrgAbuseName:   Domain Admin
             OrgAbusePhone:  +1-972-431-1000 
             OrgAbuseEmail:  domainadmin@jcpenney.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/IJ30-ARIN
             
             OrgDNSHandle: IJ30-ARIN
             OrgDNSName:   Domain Admin
             OrgDNSPhone:  +1-972-431-1000 
             OrgDNSEmail:  domainadmin@jcpenney.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/IJ30-ARIN
             
             OrgRoutingHandle: IJ30-ARIN
             OrgRoutingName:   Domain Admin
             OrgRoutingPhone:  +1-972-431-1000 
             OrgRoutingEmail:  domainadmin@jcpenney.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/IJ30-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.
             #