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
- Active-threat / abuse risk −12
- Enterprise allocation +4
- Trust score 57 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 3 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS55386 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) |
|---|---|---|
| 121.94.174.0/24 | AS55374, AS55386 | 2026-11-14 09:09:17 |
| 125.0.147.0/24 | AS55374, AS55386 | 2026-11-14 09:09:17 |
| 175.184.41.0/24 | AS55374, AS55386 | 2026-11-14 09:09:17 |
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS55386 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 |
|---|---|---|
| 61.121.66.0/24 | 1,790,245 | 2026-11-14 05:39:57 |
| 61.121.124.0/24 | 1,767,817 | 2026-11-14 05:39:57 |
| 61.121.126.0/23 | 15,459 | 2026-11-14 05:39:57 |
| 124.24.40.0/21 | 15,265 | 2026-11-14 08:04:43 |
| 116.83.162.0/24 | 15,180 | 2026-11-14 05:40:30 |
| 121.94.213.0/24 | 15,154 | 2026-11-14 08:04:42 |
| 125.0.244.0/22 | 15,148 | 2026-11-14 08:04:42 |
| 125.1.52.0/22 | 15,115 | 2026-11-14 08:04:42 |
| 124.24.48.0/21 | 15,110 | 2026-11-14 08:04:42 |
| 133.162.188.0/24 | 14,976 | 2026-11-14 05:40:34 |
| 116.83.164.0/24 | 14,953 | 2026-11-14 05:40:30 |
| 116.83.163.0/24 | 14,882 | 2026-11-14 05:39:57 |
| 175.184.40.0/24 | 14,865 | 2026-11-14 05:39:57 |
| 175.184.16.0/20 | 14,672 | 2026-11-14 05:40:30 |
| 133.162.80.0/21 | 14,651 | 2026-11-14 05:40:34 |
| 210.131.16.0/22 | 14,515 | 2026-11-14 05:39:57 |
| 220.209.72.0/23 | 14,504 | 2026-11-14 05:40:30 |
| 222.158.245.0/24 | 14,504 | 2026-11-14 05:39:57 |
| 222.158.212.0/23 | 14,414 | 2026-11-14 05:39:57 |
| 222.158.244.0/24 | 14,398 | 2026-11-14 05:40:34 |
| 220.209.48.0/22 | 14,389 | 2026-11-14 05:40:30 |
| 220.209.32.0/20 | 14,350 | 2026-11-14 05:39:57 |
| 210.131.4.0/24 | 14,349 | 2026-11-14 05:40:34 |
| 133.162.120.0/23 | 13,621 | 2026-10-28 06:28:07 |
| 133.162.152.0/21 | 13,515 | 2026-10-29 05:51:30 |
| 133.162.144.0/21 | 13,297 | 2026-10-28 06:28:07 |
| 133.162.184.0/24 | 12,656 | 2026-09-30 01:28:31 |
| 121.94.174.0/24 | 11,335 | 2026-11-14 08:04:42 |
| 125.0.147.0/24 | 11,288 | 2026-11-14 08:04:42 |
| 175.184.41.0/24 | 11,049 | 2026-11-14 03:08:33 |
| 133.162.168.0/21 | 9,953 | 2026-11-14 05:39:57 |
| 222.158.244.0/25 | 217 | 2026-11-12 13:59:29 |
| 121.94.174.0/25 | 216 | 2026-11-12 13:59:08 |
| 125.0.147.128/25 | 216 | 2026-11-12 13:59:08 |
| 175.184.41.128/25 | 216 | 2026-11-12 13:59:08 |
| 175.184.41.0/26 | 215 | 2026-11-12 13:59:08 |
Frequently Asked Questions
What is AS55386?
AS55386 is an Autonomous System Number assigned to FUJITSU LIMITED. 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 AS55386 announce?
AS55386 announces 29.7K IPv4 addresses distributed across 25 routed CIDR prefixes. The network is registered in Japan.
Who operates AS55386?
AS55386 is operated by Fujitsu Limited.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS55386 registered in?
AS55386 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
