222.193.128.0/20 - China Education And Research Network Center (AS4538)
CIDR
222.193.128.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇨🇳 China
City
Nanjing
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 222.193.128.0/20 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-15 |
Related Announcements
1 less-specific, 1 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 222.192.0.0/12 | AS4538 ERX-CERNET-BKB - China Education and Research Network Center | No ROA | - | 2026-10-15 |
| 222.193.139.0/24 | AS24361 CNGI-NJ-IX-AS-AP - CERNET2 IX at Southeast University | No ROA | - | 2026-10-15 |
Related Prefixes
More prefixes of AS4538
All prefixes of AS4538 →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/222.193.128.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/222.193.128.0/20" | jq
External Links