203.83.56.0/21 - Computer Network Information Center Of Chinese Academy Of Sciences (CNIC CAS) (AS7497)
CIDR
203.83.56.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
allocated
Allocated
2006-01-20
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.83.56.0/21 | AS7497 CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) | No ROA | - | 2026-10-12 |
Origin ASN
AS7497
CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
Related Prefixes
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/203.83.56.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.83.56.0/21" | jq
External Links