27.133.248.0/21 - BGP Prefix
IPv4APNICallocated RPKI Valid
CIDR
27.133.248.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Osaka
RIR
APNIC
Status
allocated
Allocated
2010-04-21
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
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| 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. | ||||
More-Specific Announcements
2 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 27.133.248.0/22 | AS59092 KRONOS - kronos.Co.,Ltd. | No ROA | - | 2026-10-14 |
| 27.133.252.0/22 | AS9370 SAKURA-B - SAKURA Internet Inc. | Valid | - | 2026-10-14 |
Transfer History
Registry transfers of 27.133.248.0/21, blocks inside it, or blocks containing it.
- 27.133.248.0/21Transfer ·
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/27.133.248.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/27.133.248.0/21" | jq
External Links