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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: Lambda-IX, Japan Community IX
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51044 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 |
|---|---|---|
| 45.148.173.0/24 | 19,026 | 2026-08-05 11:35:41 |
| 45.148.172.0/22 | 15,607 | 2026-08-05 11:35:41 |
| 45.148.172.0/24 | 15,554 | 2026-08-05 11:35:41 |
Frequently Asked Questions
What is AS51044?
AS51044 is an Autonomous System Number assigned to Kazuki Yamaguchi. 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 AS51044 announce?
AS51044 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Japan.
Who operates AS51044?
AS51044 is operated by Kazuki Yamaguchi. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS51044 registered in?
AS51044 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
