AS25 UCB - University of California at Berkeley
🇺🇸ARINassigned
Announced Prefixes (BGP)
15total
13 IPv42 IPv6
IPv4 Addresses
Allocated (RIR)135,168
Announced (BGP)206,080
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)7.9×10²⁸
Announced Prefixes
(BGP)15|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | - | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 | |
| No ROA | Other IRR | 2026-10-10 |
1-10 of 15
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Allocated Prefixes
(RIR)18Prefix | Country | RIR | Status |
|---|---|---|---|
| 67.21.36.0/24 | 🇺🇸 US | ARIN | allocated |
| 128.32.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 136.152.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 192.12.234.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.31.95.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.31.105.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.31.161.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.58.221.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.101.42.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.107.8.0/24 | 🇺🇸 US | ARIN | allocated |
1-10 of 18
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All 15 announced prefixes of AS25 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS25 hands its own prefixes to: transit providers, or peers at an exchange.
- AS2152CENIC19
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS25 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/25Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/25" | jq