2404:d540:1::/48 - The University Of Tokyo (AS2501)
CIDR
2404:d540:1::/48
IP Version
IPv6
Addresses
1.2Y
Mask
/48
Country
🇯🇵 Japan
City
Chiyoda
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 2404:d540:1::/48 | AS2501 UTnet - The University of Tokyo | No ROA | Other IRR | 2026-10-12 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 2404:d540::/32 | AS2501 UTnet - The University of Tokyo | No ROA | - | 2026-10-12 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS2501 | Other IRR | MAINT-AS2500 | 2023-11-13 |
Origin ASN
AS2501
UTnet - The University of Tokyo
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/2404:d540:1::/48Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/2404:d540:1::/48" | jq
External Links