HTTPfy

AS4373 Online Computer Library Center

OCLC-AS - Online Computer Library Center · registered in the United States

IPv4 addresses72,70416 prefixes · 0.002% of announced IPv4
Rank in United States#774largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#2,370of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there

IPv4 prefixes

All 16 prefixes, in address order.

  • 38.117.94.0/24
  • 113.29.23.0/24
  • 132.174.0.0/16
  • 154.59.124.0/23
  • 192.156.252.0/24
  • 192.188.124.0/24
  • 193.240.184.0/24
  • 198.137.189.0/24
  • 198.137.190.0/23
  • 198.187.191.0/24
  • 199.164.217.0/24
  • 204.17.227.0/24
  • 204.152.100.0/22
  • 204.152.104.0/24
  • 205.160.168.0/23
  • 206.107.40.0/21

Similar-sized networks in United States

ASNNameIPv4 addresses
AS399073#771 TBB-ASN - BUNNY TECHNOLOGY LLC72,960
AS32505#772 DWL-MAIN - Conterra72,704
AS11481#773 AS-UTRGV - University of Texas Rio Grande Valley72,704
AS63410#775 PRIVATESYSTEMS - PrivateSystems Networks72,448
AS5374#776 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)72,448
AS14454#777 SILVERSKY-INC - SilverSky, Inc.72,448

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources