Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Mobile allocation +2
- Trust score 67 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Open Computer Network
OCN (オーシーエヌ), or Open Computer Network(オープン・コンピュータ・ネットワーク:Ōpun Konpyūta nettowāku), is the largest Japanese Internet service provider, with over 7 million subscribers. It is owned by NTT Communications Corp, one of the largest telecommunication companies in the world.
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 192.47.166.0/24 | 256 |
2.7%
|
NTT DOCOMO BUSINESS, Inc. | JP | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS18131 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 192.47.166.0/24 | 4,000 | 2026-07-30 00:46:12 |
Frequently Asked Questions
What is AS18131?
AS18131 is an Autonomous System Number assigned to NTT DOCOMO BUSINESS, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS18131 announce?
AS18131 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Japan.
Who operates AS18131?
AS18131 is operated by NTT DOCOMO BUSINESS, Inc.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS18131 registered in?
AS18131 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
