163.51.0.0/16 - Research Organization Of Information And Systems, National Institute Of Informatics (AS2907)
CIDR
163.51.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
allocated
Allocated
1992-07-24
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 163.51.0.0/16 | AS2907 SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | No ROA | - | 2026-10-12 |
More-Specific Announcements
14 more-specific announcementsOrigin ASN
AS2907
SINET-AS - Research Organization of Information and Systems, National Institute of Informatics
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/163.51.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/163.51.0.0/16" | jq
External Links