221.7.64.0/19 - CHINA UNICOM China169 Backbone (AS4837)
CIDR
221.7.64.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇨🇳 China
RIR
APNIC
Status
allocated
Allocated
2003-01-13
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.7.64.0/19 | AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | APNICOther IRR | 2026-10-13 |
More-Specific Announcements
2 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.7.85.0/24 | AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | - | 2026-10-13 |
| 221.7.92.0/24 | AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | - | 2026-10-13 |
Related Prefixes
More prefixes of AS4837
All prefixes of AS4837 →Geolocation
Country🇨🇳ChinaCN
Coordinates35.8617, 104.1954 ↗
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/221.7.64.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.7.64.0/19" | jq
External Links