183.181.80.0/21 - BGP Prefix
IPv4APNICallocated RPKI Valid
CIDR
183.181.80.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
allocated
Allocated
2009-12-01
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 announced as a whole. Parts of it are announced as more-specific prefixes, see below. | ||||
Related Announcements
1 less-specific, 2 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 183.181.80.0/20 | AS131965 XSERVER - Xserver Inc. | Valid | - | 2026-10-12 |
| 183.181.80.0/22 | AS131965 XSERVER - Xserver Inc. | Valid | - | 2026-10-12 |
| 183.181.84.0/22 | AS131965 XSERVER - Xserver Inc. | Valid | - | 2026-10-12 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 183.181.80.0/20 | AS131965 | /24 | apnic |
Transfer History
Registry transfers of 183.181.80.0/21, blocks inside it, or blocks containing it.
- 183.181.80.0/21Transfer ·
- 183.181.80.0/20Transfer ·
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/183.181.80.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/183.181.80.0/21" | jq
External Links