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
- Multiple-origin (MOAS) routing anomaly −12
- Hosting allocation −6
- Trust score 47 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS10209 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 149.117.1.0/24 | AS7809, AS10209 | 2026-08-03 05:55:16 |
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 198.182.50.0/23 | 512 |
5.1%
|
Japan HUB and Data Center | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS10209 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 |
|---|---|---|
| 198.182.50.0/23 | 23,220 | 2026-08-03 11:36:49 |
| 198.182.50.0/24 | 5,709 | 2026-08-03 11:08:12 |
| 198.182.51.0/24 | 5,668 | 2026-08-03 11:08:12 |
| 149.117.1.0/24 | 250 | 2026-08-03 08:16:33 |
Frequently Asked Questions
What is AS10209?
AS10209 is an Autonomous System Number assigned to Japan HUB and Data Center. 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 AS10209 announce?
AS10209 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Japan.
Who operates AS10209?
AS10209 is operated by Japan HUB and Data Center. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS10209 registered in?
AS10209 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
