Report for 4373

Name

OCLC-AS - Online Computer Library Center, 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.

4373 OCLC-AS - Online Computer Library Center, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS13335         CLOUDFLARENET - Cloudflare, Inc., US
    AS3257          GTT-BACKBONE GTT, US
    AS15830         EQUINIX, NL
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2919  AS4373         ORIGIN  Originate:      73216 /15.84  Transit:          0 /0.00  OCLC-AS - Online Computer Library Center, 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       %
20665 AS4373        OCLC-AS - Online Computer Library Center, US      19      2      1     18      1   5.26%


  Prefix               AS Path                              Aggregation Suggestion
  38.117.94.0/24       4777 13335 4373        
  113.29.23.0/24       4777 13335 4373        
  132.174.0.0/16       4777 13335 4373        
  132.174.181.0/24     4777 2497 3257 4373    
  132.174.182.0/24     4777 2516 3356 4373    
  154.59.124.0/23      4777 13335 4373        
  192.156.252.0/24     4777 13335 4373        
  192.188.124.0/24     4777 13335 4373        
  193.240.184.0/24     4777 13335 4373        
  198.137.189.0/24     4777 13335 4373        
  198.137.190.0/23     4777 13335 4373      + Announce - aggregate of 198.137.190.0/24 (4777 13335 4373) and 198.137.191.0/24 (4777 13335 4373)
  198.137.190.0/24     4777 13335 4373      - Withdrawn - aggregated with 198.137.191.0/24 (4777 13335 4373)
  198.137.191.0/24     4777 13335 4373      - Withdrawn - aggregated with 198.137.190.0/24 (4777 13335 4373)
  198.187.191.0/24     4777 13335 4373        
  199.164.217.0/24     4777 13335 4373        
  204.17.227.0/24      4608 7575 2914 15830 4373   
  204.152.100.0/22     4777 13335 4373        
  204.152.104.0/24     4777 13335 4373        
  205.160.168.0/23     4777 13335 4373        
  206.107.40.0/21      4777 13335 4373        

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

AS4373   8 More Specifics   19 Total Advertisements   OCLC-AS - Online Computer Library Center, US
    38.117.94.0/24                38.0.0.0/8
    113.29.23.0/24                113.29.0.0/17
    132.174.181.0/24              132.174.0.0/16
    132.174.182.0/24              132.174.0.0/16
    154.59.124.0/23               154.59.0.0/16
    193.240.184.0/24              193.240.0.0/16
    205.160.168.0/23              205.160.0.0/14
    206.107.40.0/21               206.104.0.0/14

Whois Entry

whois: 402332

IANA has recorded AS4373 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS4373\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:       4373
             ASName:         OCLC-AS
             ASHandle:       AS4373
             RegDate:        1995-02-08
             Updated:        1995-02-08
             Ref:            https://rdap.arin.net/registry/autnum/4373
             
             
             OrgName:        Online Computer Library Center
             OrgId:          OCLC-1
             Address:        6565 Frantz Rd
             City:           Dublin
             StateProv:      OH
             PostalCode:     43017
             Country:        US
             RegDate:        1995-02-08
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/OCLC-1
             
             
             OrgAbuseHandle: ANS-NOC-ARIN
             OrgAbuseName:   ANS CORE Systems Inc
             OrgAbusePhone:  +1-800-456-6300 
             OrgAbuseEmail:  noc@ans.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ANS-NOC-ARIN
             
             OrgTechHandle: ANS-NOC-ARIN
             OrgTechName:   ANS CORE Systems Inc
             OrgTechPhone:  +1-800-456-6300 
             OrgTechEmail:  noc@ans.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/ANS-NOC-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.
             #