Report for 27365

Name

CENGAGE-OHCIN - Cengage 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 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.

27365 CENGAGE-OHCIN, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS6181          FUSE-NET, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
8499  AS27365        ORIGIN  Originate:      14336 /18.19  Transit:          0 /0.00  CENGAGE-OHCIN, 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       %
 6568 AS27365       CENGAGE-OHCIN, US                                 28     11      4     21      7  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  69.32.123.0/24       6939 6181 27365        
  69.32.128.0/21       6939 6181 27365      + Announce - aggregate of 69.32.128.0/22 (6939 6181 27365) and 69.32.132.0/22 (6939 6181 27365)
  69.32.128.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.129.0/24 (6939 6181 27365)
  69.32.129.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.128.0/24 (6939 6181 27365)
  69.32.130.0/23       6939 6181 27365      - Withdrawn - aggregated with 69.32.128.0/23 (6939 6181 27365)
  69.32.132.0/23       6939 6181 27365      - Withdrawn - aggregated with 69.32.134.0/23 (6939 6181 27365)
  69.32.134.0/23       6939 6181 27365      - Withdrawn - aggregated with 69.32.132.0/23 (6939 6181 27365)
  69.32.138.0/23       6939 6181 27365        
  69.32.140.0/24       6939 6181 27365        
  69.32.145.0/24       3257 3356 27365 27365 27365 27365   
  69.32.146.0/23       6939 6181 27365        
  69.32.148.0/23       6939 6181 27365        
  69.32.159.0/24       6939 6181 27365        
  69.32.172.0/24       6939 6181 27365        
  69.32.178.0/23       6939 6181 27365      + Announce - aggregate of 69.32.178.0/24 (6939 6181 27365) and 69.32.179.0/24 (6939 6181 27365)
  69.32.178.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.179.0/24 (6939 6181 27365)
  69.32.179.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.178.0/24 (6939 6181 27365)
  69.32.182.0/23       6939 6181 27365      + Announce - aggregate of 69.32.182.0/24 (6939 6181 27365) and 69.32.183.0/24 (6939 6181 27365)
  69.32.182.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.183.0/24 (6939 6181 27365)
  69.32.183.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.182.0/24 (6939 6181 27365)
  69.32.184.0/24       6939 6181 27365        
  69.32.192.0/22       6939 6181 27365        
  69.32.200.0/21       6939 6181 27365        
  69.32.208.0/22       6939 6181 27365        
  69.32.216.0/21       6939 6181 27365        
  69.32.224.0/24       6939 6181 27365        
  69.32.226.0/23       6939 6181 27365      + Announce - aggregate of 69.32.226.0/24 (6939 6181 27365) and 69.32.227.0/24 (6939 6181 27365)
  69.32.226.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.227.0/24 (6939 6181 27365)
  69.32.227.0/24       6939 6181 27365      - Withdrawn - aggregated with 69.32.226.0/24 (6939 6181 27365)
  69.32.228.0/23       6939 6181 27365        
  69.32.246.0/23       6939 6181 27365        
  69.32.252.0/24       3257 6181 27365        

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

AS27365   30 More Specifics   32 Total Advertisements   CENGAGE-OHCIN, US
    69.32.123.0/24                69.32.0.0/16
    69.32.127.0/24                69.32.0.0/16
    69.32.128.0/24                69.32.0.0/16
    69.32.129.0/24                69.32.0.0/16
    69.32.130.0/23                69.32.0.0/16
    69.32.132.0/23                69.32.0.0/16
    69.32.134.0/23                69.32.0.0/16
    69.32.138.0/23                69.32.0.0/16
    69.32.140.0/24                69.32.0.0/16
    69.32.142.0/23                69.32.0.0/16
    69.32.146.0/23                69.32.0.0/16
    69.32.148.0/23                69.32.0.0/16
    69.32.159.0/24                69.32.0.0/16
    69.32.172.0/24                69.32.0.0/16
    69.32.178.0/24                69.32.0.0/16
    69.32.179.0/24                69.32.0.0/16
    69.32.182.0/24                69.32.0.0/16
    69.32.183.0/24                69.32.0.0/16
    69.32.184.0/24                69.32.0.0/16
    69.32.192.0/22                69.32.0.0/16
    69.32.200.0/21                69.32.0.0/16
    69.32.208.0/22                69.32.0.0/16
    69.32.216.0/21                69.32.0.0/16
    69.32.224.0/24                69.32.0.0/16
    69.32.226.0/24                69.32.0.0/16
    69.32.227.0/24                69.32.0.0/16
    69.32.228.0/23                69.32.0.0/16
    69.32.246.0/23                69.32.0.0/16
    69.32.252.0/24                69.32.0.0/16
    69.32.253.0/24                69.32.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 140.244.0.0/16              Announced
    + 155.40.0.0/16               Announced

Whois Entry

whois: 402551

IANA has recorded AS27365 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27365\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:       27365
             ASName:         CENGAGE-OHCIN
             ASHandle:       AS27365
             RegDate:        2003-02-20
             Updated:        2016-05-17
             Ref:            https://rdap.arin.net/registry/autnum/27365
             
             
             OrgName:        Cengage Learning, Inc.
             OrgId:          CENGA-5
             Address:        5191 Natorp Blvd
             Address:        Attn Communications in CSO
             City:           Mason
             StateProv:      OH
             PostalCode:     45040
             Country:        US
             RegDate:        2009-04-17
             Updated:        2022-10-12
             Ref:            https://rdap.arin.net/registry/entity/CENGA-5
             
             
             OrgTechHandle: NETAD1-ARIN
             OrgTechName:   Network Administration
             OrgTechPhone:  +1-800-443-3941 
             OrgTechEmail:  netadmin@cengage.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETAD1-ARIN
             
             OrgAbuseHandle: NETAD1-ARIN
             OrgAbuseName:   Network Administration
             OrgAbusePhone:  +1-800-443-3941 
             OrgAbuseEmail:  netadmin@cengage.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETAD1-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.
             #