University of California, Santa Cruz
AS5739 is University of California, Santa Cruz (ucsc.edu). It announces 131,072 IPv4 addresses in 2 prefixes, and 1 IPv6 prefixes.
United States· ARIN· allocated 1995-09-13· 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 States131,072 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UCSC
- name
- University of California, Santa Cruz
- org
- UCSC
- org name
- University of California, Santa Cruz
- org address
- University of California, Santa Cruz, Information Technology Services, Communications Building, 620 Baskin Circle, Santa Cruz, CA, 95064
- org city
- Santa Cruz
- org country
- US
- country
- US
- source
- arin
- created
- 1995-09-13
- updated
- 2011-06-29
- abuse name
- UCSC Security
- abuse email
- abuse@ucsc.edu
- abuse phone
- +1-831-459-2714
- abuse kind
- role
- abuse city
- Santa Cruz
- abuse country
- US
- admin name
- Network Operations Center
- admin email
- noc@ucsc.edu
- admin phone
- +1-831-459-2714
- admin kind
- role
- admin city
- Santa Cruz
- admin country
- US
- tech
- UCSCN-ARIN
- tech name
- Network Operations Center
- tech email
- noc@ucsc.edu
- tech phone
- +1-831-459-2714
- tech kind
- role
- tech city
- Santa Cruz
- 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.
- VPN IP400.03%
- anyip, geonode, geonix0.06%
- None here
- None here
- 0.00%
- None here
- Hosting IP3,3282.54%
- None here
- None here
- None here
- SSH IP1380.11%
- 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 |
|---|---|---|---|---|
| 128.114.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 169.233.0.0/16 | United States | not found | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2607:f5f0::/32 | United States | valid | 20 | 2026-10-02 |
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