AS17957 CTS SOUTH TOKYO CABLETELEVISION
Announced Prefixes (BGP)
6total
6 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)7,168
Announced (BGP)19,456
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
20
Prefix Limit (IPv6)
5
Allocated
-
Announced Prefixes
(BGP)6|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - |
Allocated Prefixes
(RIR)4Prefix | Country | RIR | Status |
|---|---|---|---|
| 49.236.232.0/21 | 🇯🇵 JP | APNIC | allocated |
| 110.232.236.0/22 | 🇯🇵 JP | APNIC | allocated |
| 115.165.184.0/21 | 🇯🇵 JP | APNIC | allocated |
| 202.122.24.0/21 | 🇯🇵 JP | APNIC | allocated |
All 6 announced prefixes of AS17957 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS17957 hands its own prefixes to: transit providers, or peers at an exchange.
- AS9365ITSCOM Its Communications6
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 AS17957 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/17957Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/17957" | jq