AS38635 KEIO-NET Keio University
Announced Prefixes (BGP)
4total
2 IPv42 IPv6
IPv4 Addresses
Allocated (RIR)65,536
Announced (BGP)131,072
IPv6 Addresses
Allocated (RIR)2.4×10²⁴
Announced (BGP)2.4×10²⁴
Prefix Limit (IPv4)
100
Prefix Limit (IPv6)
10
Allocated
-
Announced Prefixes
(BGP)4|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 |
Allocated Prefixes
(RIR)3Prefix | Country | RIR | Status |
|---|---|---|---|
| 131.113.0.0/16 | 🇯🇵 JP | APNIC | allocated |
| 2001:df0:eb::/48 | 🇯🇵 JP | APNIC | assigned |
| 2001:df2:c900::/48 | 🇯🇵 JP | APNIC | assigned |
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 AS38635 should publish an ASPA object
- IPv4 transfer marketTransfers published by all five RIRs
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/38635Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/38635" | jq