AS25 University of California at Berkeley
AS25 (UCB) is registered to University of California at Berkeley in US, through ARIN. It originates 13 prefixes in the global routing table.
Who holds AS25
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
WHOIS recordARIN
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # ASNumber: 25 ASName: UCB ASHandle: AS25 RegDate: 1984-08-03 Updated: 2023-12-14 Comment: DMCA Designated Agent is policy@berkeley.edu Ref: https://rdap.arin.net/registry/autnum/25 OrgName: University of California at Berkeley OrgId: UCAB-1-Z Address: IST - Telecommunications Address: ATTN Network Services and Operations Address: 2850 Telegraph Ave Address: NOTE See Comment for DMCA INFO City: Berkeley StateProv: CA PostalCode: 94705 Country: US RegDate: 2010-01-13 Updated: 2023-07-20 Comment: DMCA Designated Agent is dmca@berkeley.edu Ref: https://rdap.arin.net/registry/entity/UCAB-1-Z OrgTechHandle: UCB-NOC-ARIN OrgTechName: IST Communication and Network Services OrgTechPhone: +1-510-664-9000 OrgTechEmail: noc@berkeley.edu OrgTechRef: https://rdap.arin.net/registry/entity/UCB-NOC-ARIN OrgAbuseHandle: UCBSE-ARIN OrgAbuseName: UCB-SECURIT-ARIN OrgAbusePhone: +1-510-664-9000 OrgAbuseEmail: abuse@security.berkeley.edu OrgAbuseRef: https://rdap.arin.net/registry/entity/UCBSE-ARIN OrgNOCHandle: UCB-NOC-ARIN OrgNOCName: IST Communication and Network Services OrgNOCPhone: +1-510-664-9000 OrgNOCEmail: noc@berkeley.edu OrgNOCRef: https://rdap.arin.net/registry/entity/UCB-NOC-ARIN RTechHandle: UCB-NOC-ARIN RTechName: IST Communication and Network Services RTechPhone: +1-510-664-9000 RTechEmail: noc@berkeley.edu RTechRef: https://rdap.arin.net/registry/entity/UCB-NOC-ARIN RNOCHandle: UCB-NOC-ARIN RNOCName: IST Communication and Network Services RNOCPhone: +1-510-664-9000 RNOCEmail: noc@berkeley.edu RNOCRef: https://rdap.arin.net/registry/entity/UCB-NOC-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. #
What AS25 announces
Prefixes originated by AS25 in the routing table our collectors hold (kept current as routes change), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
RPKI valid RPKI invalid no ROA covers it
Who AS25 buys transit from
Inferred from the AS paths in the RouteViews tables and our own collectors’ feeds, refreshed every 4 hours, most-seen first. 1 upstream.
Who buys transit from AS25
None seen: AS25 does not appear to provide transit to anyone.
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
| Source | as-name | Maintained by |
|---|---|---|
| RADB | UCB | MAINT-AS25 |
Route objects with origin AS25: RADB 21 · ARIN 1