221.3.248.0/21 - BGP Prefix
IPv4APNICassigned RPKI Valid
CIDR
221.3.248.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Kunming
RIR
APNIC
Status
assigned
Allocated
-
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 currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.3.128.0/17 | AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | - | 2026-10-13 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 221.3.128.0/17 | AS4837 | /17 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 221.3.248.0/24 | 🇨🇳CN | assigned | |
| 221.3.255.0/26 | 🇨🇳CN | assigned | |
| 221.3.255.64/27 | 🇨🇳CN | assigned | |
| 221.3.255.95/32 | 🇨🇳CN | assigned | |
| 221.3.255.96/27 | 🇨🇳CN | assigned | |
| 221.3.255.159/32 | 🇨🇳CN | assigned | |
| 221.3.255.160/28 | 🇨🇳CN | assigned | |
| 221.3.255.176/29 | 🇨🇳CN | assigned | |
| 221.3.255.184/30 | 🇨🇳CN | assigned | |
| 221.3.255.188/31 | 🇨🇳CN | assigned | |
| 221.3.255.190/32 | 🇨🇳CN | assigned |
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/221.3.248.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.3.248.0/21" | jq
External Links