AS55991 AS55991-36 - CNNIC ASN block
Announced Prefixes (BGP)
21total
21 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)6,144
Announced (BGP)9,984
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
50
Prefix Limit (IPv6)
5
Allocated
-
Announced Prefixes
(BGP)21|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | Other IRR | 2026-10-11 | |
| Valid | - | 2026-10-11 | |
| Valid | - | 2026-10-11 |
1-10 of 21
1 / 3
Allocated Prefixes
(RIR)6Prefix | Country | RIR | Status |
|---|---|---|---|
| 43.228.204.0/22 | 🇨🇳 CN | APNIC | allocated |
| 43.228.240.0/22 | 🇨🇳 CN | APNIC | allocated |
| 103.41.116.0/22 | 🇨🇳 CN | APNIC | allocated |
| 103.56.100.0/22 | 🇨🇳 CN | APNIC | allocated |
| 103.56.104.0/22 | 🇨🇳 CN | APNIC | allocated |
| 103.192.208.0/22 | 🇨🇳 CN | APNIC | allocated |
All 21 announced prefixes of AS55991 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS55991 hands its own prefixes to: transit providers, or peers at an exchange.
- AS58461CT HANGZHOU IDC No.288,Fu Chun Road21
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 AS55991 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/55991Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/55991" | jq