203.99.21.0/24 - ZDNS Internet Domain Name System Beijing Engineering Resrarch Center (AS38345)
IPv4APNICannouncedAS38345ZDNS Internet Domain Name System Beijing Engineering Resrarch Center Ltd. RPKI Valid
CIDR
203.99.21.0/24
IP Version
IPv4
Addresses
256
Mask
/24 (255.255.255.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.99.21.0/24 | AS38345 ZDNS Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | Valid | APNIC | 2026-10-11 |
Related Prefixes
More prefixes of AS38345
All prefixes of AS38345 →Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the APNIC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/203.99.21.0/24Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.99.21.0/24" | jq
External Links