University of California San Francisco
AS5653 is University of California San Francisco (ucsf.edu). It announces 196,096 IPv4 addresses in 17 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 1995-07-27· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States196,096 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UCSF
- name
- University of California San Francisco
- org
- UCSF-Z
- org name
- University of California San Francisco
- org address
- Room 602, 1855 Folsom Street, San Francisco, CA, 94143-0225
- org city
- San Francisco
- org country
- US
- country
- US
- source
- arin
- created
- 1995-07-27
- updated
- 2026-02-26
- abuse name
- UCSF ITS Information Security Services
- abuse email
- security@ucsf.edu
- abuse phone
- +1-415-514-4100
- abuse kind
- role
- abuse city
- San Francisco
- abuse country
- US
- admin name
- Tom Chen
- admin email
- tom.chen@ucsf.edu
- admin phone
- +1-415-353-3990
- admin kind
- person
- admin city
- San Francisco
- admin country
- US
- tech name
- Tom Chen
- tech email
- tom.chen@ucsf.edu
- tech phone
- +1-415-353-3990
- tech kind
- person
- tech city
- San Francisco
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- 0.00%
- anyip, arnproxy, floppydata0.00%
- None here
- None here
- None here
- None here
- Hosting IP3,3281.70%
- None here
- None here
- None here
- SSH IP580.03%
- 0.00%
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 64.54.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 64.54.4.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.6.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.17.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.18.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.128.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.149.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.162.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.192.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.193.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.194.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.195.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.196.0/24 | United States | not found | 17 | 2026-10-02 |
| 64.54.202.0/24 | United States | not found | 17 | 2026-10-02 |
| 128.218.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 169.230.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 169.230.239.0/24 | United States | not found | 4 | 2026-10-02 |
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