AS40387 UI-ICCN - University of Illinois
🇺🇸ARINassigned
Announced Prefixes (BGP)
2total
1 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)28,672
Announced (BGP)2,048
IPv6 Addresses
Allocated (RIR)1.2×10³⁰
Announced (BGP)1.2×10²⁴
Announced Prefixes
(BGP)2|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 |
Allocated Prefixes
(RIR)7Prefix | Country | RIR | Status |
|---|---|---|---|
| 64.22.176.0/20 | 🇺🇸 US | ARIN | allocated |
| 72.36.64.0/18 | 🇺🇸 US | ARIN | allocated |
| 204.93.0.0/19 | 🇺🇸 US | ARIN | allocated |
| 2600:3900::/28 | 🇺🇸 US | ARIN | allocated |
| 2620:0:e00::/44 | 🇺🇸 US | ARIN | allocated |
| 2620:0:e10::/48 | 🇺🇸 US | ARIN | allocated |
| 2620:79:8000::/48 | 🇺🇸 US | ARIN | allocated |
All 2 announced prefixes of AS40387 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS40387 hands its own prefixes to: transit providers, or peers at an exchange.
- AS23473PAVLOV MEDIA2
Downstreams (10)
Networks whose own prefixes AS40387 passes on: usually its customers.
- AS22335Metropolitan Research And Education Network14
- AS698University Of Illinois13
- AS38University Of Illinois7
- AS6200University Of Illinois Chicago6
- AS1224University Of Illinois3
- AS14834University Of Illinois At Springfield3
- AS237Merit Network1
- AS26367Bradley University1
- AS30033Big Ten Network1
- AS32464University Of Illinois College Of Medicine At Peoria1
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 AS40387 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/40387Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/40387" | jq