218.21.42.0/23 - BGP Prefix
IPv4APNICassigned RPKI Valid
CIDR
218.21.42.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇨🇳 China
City
Beijing
RIR
APNIC
Status
assigned
Allocated
-
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
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| 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 |
|---|---|---|---|---|
| 218.21.32.0/20 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 218.21.32.0/20 | AS4134 | /20 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 218.21.42.0/27 | 🇨🇳CN | assigned | |
| 218.21.42.32/27 | 🇨🇳CN | assigned | |
| 218.21.42.64/27 | 🇨🇳CN | assigned | |
| 218.21.42.96/27 | 🇨🇳CN | assigned | |
| 218.21.42.128/27 | 🇨🇳CN | assigned | |
| 218.21.42.160/27 | 🇨🇳CN | assigned | |
| 218.21.42.192/27 | 🇨🇳CN | assigned | |
| 218.21.42.224/27 | 🇨🇳CN | assigned | |
| 218.21.43.0/27 | 🇨🇳CN | assigned | |
| 218.21.43.32/27 | 🇨🇳CN | assigned | |
| 218.21.43.64/27 | 🇨🇳CN | assigned | |
| 218.21.43.96/27 | 🇨🇳CN | assigned | |
| 218.21.43.128/27 | 🇨🇳CN | assigned | |
| 218.21.43.160/27 | 🇨🇳CN | assigned | |
| 218.21.43.192/27 | 🇨🇳CN | assigned | |
| 218.21.43.224/27 | 🇨🇳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/218.21.42.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/218.21.42.0/23" | jq
External Links