203.142.12.0/22 - BGP Prefix
IPv4APNICallocatedNo ROA
CIDR
203.142.12.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
allocated
Allocated
2004-05-12
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below. | ||||
More-Specific Announcements
3 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.142.13.0/24 | AS54896 SMCUSA-ASN1 - SMC Corporation of America | No ROA | - | 2026-10-13 |
| 203.142.14.0/24 | AS54896 SMCUSA-ASN1 - SMC Corporation of America | No ROA | - | 2026-10-13 |
| 203.142.15.0/24 | AS54896 SMCUSA-ASN1 - SMC Corporation of America | No ROA | - | 2026-10-13 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS54896 | APNIC | MAINT-SCOA-AP | 2024-05-29 |
Transfer History
Registry transfers of 203.142.12.0/22, blocks inside it, or blocks containing it.
- 203.142.12.0/22Transfer ·
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/203.142.12.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.142.12.0/22" | jq
External Links