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AS5653 University of California San Francisco

UCSF - University of California San Francisco · registered in the United States

IPv4 addresses196,24246 prefixes · 0.006% of announced IPv4
Rank in United States#343largest network in US by IPv4 space, of 18,338 · 0.01% of US
Rank worldwide#1,125of 79,396 networks with IPv4
IPv6288 addresses (smaller than a /48)3 prefixes
CountryUnited States18,679 ASNs registered there
Open AS5653 in ASN lookup Look up an IP in this network (64.54.0.1) All networks in United States

IPv4 prefixes

All 46 prefixes, in address order.

  • 64.54.0.0/22
  • 64.54.4.0/24
  • 64.54.5.0/24
  • 64.54.6.0/24
  • 64.54.7.0/24
  • 64.54.8.0/21
  • 64.54.16.0/20
  • 64.54.32.0/19
  • 64.54.64.0/18
  • 64.54.128.0/24
  • 64.54.129.0/24
  • 64.54.130.0/23
  • 64.54.132.0/22
  • 64.54.136.0/21
  • 64.54.144.0/22
  • 64.54.148.0/23
  • 64.54.150.0/23
  • 64.54.152.0/21
  • 64.54.160.0/23
  • 64.54.162.0/24
  • 64.54.163.0/24
  • 64.54.164.0/22
  • 64.54.168.0/21
  • 64.54.176.0/20
  • 64.54.192.0/22
  • 64.54.196.0/24
  • 64.54.197.0/24
  • 64.54.198.0/23
  • 64.54.200.0/21
  • 64.54.208.0/20
  • 64.54.224.0/19
  • 128.218.0.0/16
  • 137.164.3.112/29
  • 137.164.3.136/29
  • 137.164.23.152/31
  • 169.230.0.0/18
  • 169.230.64.0/21
  • 169.230.72.0/22
  • 169.230.78.0/23
  • 169.230.80.0/20
  • 169.230.96.0/19
  • 169.230.128.0/18
  • 169.230.192.0/19
  • 169.230.224.0/20
  • 169.230.240.0/20
  • 205.154.255.128/25

IPv6 prefixes

All 3 prefixes.

  • 2607:f380::118:9a40:3700/121
  • 2607:f380::118:9a40:3880/121
  • 2607:f380:1::118:9a41:7980/123

Similar-sized networks in United States

ASNNameIPv4 addresses
AS340#340 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)196,352
AS5371#341 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)196,352
AS2553#342 FSU-AS - Florida State University196,336
AS22351#344 INTELSAT-1 - INTELSAT GLOBAL SERVICE CORPORATION195,840
AS14051#345 SUREWEST - Fidium195,840
AS22252#346 AS22252 - The City of New York194,304

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