202.38.128.0/23
🇨🇳CIDR
202.38.128.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇨🇳 China
City
Beijing
RIR
APNIC
Status
assigned
Allocated
1/30/1996
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 202.38.128.0/23 | AS7497CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) | No ROA | RADB | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 202.38.128.0/24 | AS3460IHEP - Institute of High Energy Physics | No ROA | — | 6/1/2026 |
| 202.38.129.0/24 | AS3460IHEP - Institute of High Energy Physics | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS7497 | RADB | MAINT-AS4637 | 11/13/2023 |
Origin ASN
AS7497
CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
Geolocation
API
Open https://api.ipctl.io/v1/prefix/202.38.128.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/202.38.128.0/23" | jq
External Links