218.185.240.0/21 - CHINATELECOM CORE WAN CN2 China Telecom Next Generation Carrier Network (AS4809)
IPv4APNICallocatedAS4809CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network RPKI Valid
CIDR
218.185.240.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Wenquan
RIR
APNIC
Status
allocated
Allocated
2011-04-14
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 218.185.240.0/21 | AS4809 CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network | Valid | Other IRR | 2026-10-11 |
More-Specific Announcements
5 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 218.185.241.0/24 | AS23764 CTGNET CTGNet | Valid | - | 2026-10-11 |
| 218.185.242.0/24 | AS4809 CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network | Valid | - | 2026-10-11 |
| 218.185.243.0/24 | AS23764 CTGNET CTGNet | Valid | - | 2026-10-11 |
| 218.185.245.0/24 | AS23764 CTGNET CTGNet | Valid | - | 2026-10-11 |
| 218.185.246.0/24 | AS4809 CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network | Valid | - | 2026-10-11 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 218.185.240.0/21 | AS4809 | /21 | apnic |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS4809 | Other IRR | MAINT-CT-GNOC | 2023-11-13 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 218.185.241.0/24 | AS23764 | 🇸🇬SG | assigned |
| 218.185.242.0/24 | AS4809 | 🇸🇬SG | assigned |
| 218.185.243.0/24 | AS23764 | 🇸🇬SG | assigned |
| 218.185.245.0/24 | AS23764 | 🇰🇷KR | 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/218.185.240.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/218.185.240.0/21" | jq
External Links