AS17937 NDMC - NIKKEI ADVANCED SYSTEMS INC.
Announced Prefixes (BGP)
4total
3 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)1,024
Announced (BGP)5,376
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Prefix Limit (IPv4)
10
Prefix Limit (IPv6)
5
Allocated
-
Routing hygiene
Score 36/100 · 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
2
diversity 38/100
- 100% of announced prefixes (4 of 4) have no valid ROA
Based on 4 announced prefixes, updated daily (2026-10-12). How the score works · RPKI explained
Announced Prefixes
(BGP)4|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-12 | |
| No ROA | Other IRR | 2026-10-12 | |
| No ROA | Other IRR | 2026-10-12 | |
| No ROA | Other IRR | 2026-10-12 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 115.187.92.0/22 | 🇯🇵 JP | APNIC | allocated |
| 2404:cb00::/32 | 🇯🇵 JP | APNIC | allocated |
ASPA
No ASPA
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
- ASPA explainedWhy AS17937 should publish an ASPA object
- IPv4 transfer marketTransfers published by all five RIRs
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/17937Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/17937" | jq