AS5653 — UCSF

Network type: education

AS5653 announces 13 IPv4 prefixes covering 196,242 addresses and 3 IPv6 prefixes.

About this network

The campus network of the University of California, San Francisco (UCSF), a health-sciences university and academic medical centre, registered under the handle UCSF.

What it's used for

• Connectivity for UCSF's schools of medicine, dentistry, nursing, and pharmacy, its graduate research programmes, and the UCSF Medical Center.
• Routing for roughly 196,000 IPv4 addresses spread across campus, research, and clinical networks.

Notable

• Institutional address space with a research-university profile. It carries academic, laboratory, and clinical systems rather than commercial hosting.
• ARIN registered the AS in 1995, part of the wave of US universities that took their own AS numbers as campus networks joined the commercial internet.

Interesting

• UCSF is the one University of California campus with no undergraduate programme. It is entirely graduate and professional, and the network reflects that: a large teaching hospital sits behind it alongside the academic campus, which is why the address space is so much larger than a college of comparable enrolment would hold.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 64.54.0.0/16
• 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
• 169.230.128.0/17
• 205.154.255.128/25
• 2607:f380::118:9a40:3700/121
• 2607:f380::118:9a40:3880/121
• 2607:f380:1::118:9a41:7980/123

Upstream networks

• AS2152 CENIC
• AS2153 CENIC

Adjacent networks

• AS2152 CENIC
• AS2153 CENIC