AS7257 MARU-NET OTO GK
🇯🇵Org handle: ORG-MARU1-RIPE
MARU
RIPE NCCallocated
Announced Prefixes (BGP)
3total
2 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)512
Announced (BGP)512
IPv6 Addresses
Allocated (RIR)6.3×10²⁹
Announced (BGP)6.3×10²⁹
Routing hygiene
Score 40/100 · Medium riskRPKI ROA coverage
0%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
- 100% of announced prefixes (3 of 3) have no valid ROA
- Only one upstream seen in the AS paths of its routes
Based on 3 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)3|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-27 | |
| No ROA | Other IRR | 2026-10-27 | |
| No ROA | Other IRR | 2026-10-27 |
Allocated Prefixes
(RIR)3Prefix | Country | RIR | Status |
|---|---|---|---|
| 168.151.54.0/24 | 🇯🇵 JP | RIPENCC | assigned |
| 208.88.66.0/24 | 🇯🇵 JP | RIPENCC | assigned |
| 2a06:40::/29 | 🇯🇵 JP | RIPENCC | allocated |
All 3 announced prefixes of AS7257 →
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS213471 | 🇯🇵IPPNOC YAMAMOTO Hiroshi |
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS7257 hands its own prefixes to: transit providers, or peers at an exchange.
- AS9663OTO GK3
Transfer History
Registry transfers of AS7257 between organisations.
- AS7257inter-RIRTransfer ·
- AS7257M&A ·
Abuse Contact
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/7257Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/7257" | jq