Report for 397969

Name

CL-ASN-01 - Cambium Learning, 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.

397969 CL-ASN-01 - Cambium Learning, Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS33668         CMCS - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
43962 AS397969       ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  CL-ASN-01 - Cambium Learning, 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       %
29979 AS397969      CL-ASN-01 - Cambium Learning, Inc., US             4      2      1      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  66.248.224.0/23      4777 2497 7018 397969 + Announce - aggregate of 66.248.224.0/24 (4777 2497 7018 397969) and 66.248.225.0/24 (4777 2497 7018 397969)
  66.248.224.0/24      4777 2497 7018 397969 - Withdrawn - aggregated with 66.248.225.0/24 (4777 2497 7018 397969)
  66.248.225.0/24      4777 2497 7018 397969 - Withdrawn - aggregated with 66.248.224.0/24 (4777 2497 7018 397969)
  66.248.226.0/24      4777 2497 7018 397969   
  66.248.227.0/24      4777 2516 7922 33668 397969   

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

AS397969   4 More Specifics   4 Total Advertisements   CL-ASN-01 - Cambium Learning, Inc., US
    66.248.224.0/24               66.248.224.0/22
    66.248.225.0/24               66.248.224.0/22
    66.248.226.0/24               66.248.224.0/22
    66.248.227.0/24               66.248.224.0/22

Whois Entry

whois: 402617

IANA has recorded AS397969 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS397969\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:       397969
             ASName:         CL-ASN-01
             ASHandle:       AS397969
             RegDate:        2019-09-23
             Updated:        2019-09-23
             Ref:            https://rdap.arin.net/registry/autnum/397969
             
             
             OrgName:        Cambium Learning, Inc.
             OrgId:          CL-1649
             Address:        17855 Dallas Pkwy Ste 400
             City:           Dallas
             StateProv:      TX
             PostalCode:     75287
             Country:        US
             RegDate:        2018-08-02
             Updated:        2018-08-02
             Ref:            https://rdap.arin.net/registry/entity/CL-1649
             
             
             OrgNOCHandle: ITOPE86-ARIN
             OrgNOCName:   IT Operations
             OrgNOCPhone:  +1-214-932-3202 
             OrgNOCEmail:  itoperations@cambiumlearning.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ITOPE86-ARIN
             
             OrgAbuseHandle: ITOPE86-ARIN
             OrgAbuseName:   IT Operations
             OrgAbusePhone:  +1-214-932-3202 
             OrgAbuseEmail:  itoperations@cambiumlearning.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ITOPE86-ARIN
             
             OrgTechHandle: ITOPE86-ARIN
             OrgTechName:   IT Operations
             OrgTechPhone:  +1-214-932-3202 
             OrgTechEmail:  itoperations@cambiumlearning.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ITOPE86-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.
             #