202.127.0.0/21 - Computer Network Information Center Of Chinese Academy Of Sciences (CNIC CAS) (AS7497)
IPv4APNICassignedAS7497CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) RPKI Valid
CIDR
202.127.0.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
assigned
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 202.127.0.0/21 | AS7497 CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) | Valid | APNICOther IRR | 2026-10-12 |
More-Specific Announcements
5 more-specific announcementsRPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 202.127.0.0/21 | AS7497 | /21 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 202.127.0.0/23 | 🇨🇳CN | allocated | |
| 202.127.2.0/24 | AS7497 | 🇨🇳CN | allocated |
| 202.127.3.0/24 | 🇨🇳CN | allocated | |
| 202.127.4.0/24 | AS7497 | 🇨🇳CN | allocated |
| 202.127.5.0/24 | 🇨🇳CN | allocated | |
| 202.127.6.0/23 | 🇨🇳CN | allocated |
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/202.127.0.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/202.127.0.0/21" | jq
External Links