AS59121 AKNWS-NET Asahi Kasei Networks Corporation
Announced Prefixes (BGP)
3total
3 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)32,768
Announced (BGP)33,280
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
50
Prefix Limit (IPv6)
5
Allocated
-
Announced Prefixes
(BGP)3|
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 |
Allocated Prefixes
(RIR)1Prefix | Country | RIR | Status |
|---|---|---|---|
| 138.212.0.0/17 | 🇯🇵 JP | APNIC | allocated |
All 3 announced prefixes of AS59121 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS59121 hands its own prefixes to: transit providers, or peers at an exchange.
- AS4725ODN SoftBank3
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 AS59121 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/59121Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/59121" | jq