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
- Trust score 53 / 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 AS134351 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) |
|---|---|---|
| 23.19.53.0/24 | AS134351, AS205544 | 2026-09-11 10:40:53 |
Network profile
Source: PeeringDB →Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS134351 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 |
|---|---|---|
| 46.202.253.0/24 | 19,451 | 2026-09-11 10:38:29 |
| 46.202.255.0/24 | 19,391 | 2026-09-11 10:38:29 |
| 46.203.52.0/24 | 19,389 | 2026-09-11 10:38:29 |
| 46.203.23.0/24 | 19,366 | 2026-09-11 10:38:29 |
| 46.203.45.0/24 | 19,364 | 2026-09-11 10:38:29 |
| 46.203.28.0/24 | 19,349 | 2026-09-11 10:38:29 |
| 23.26.61.0/24 | 19,233 | 2026-09-11 10:38:29 |
| 23.26.53.0/24 | 19,160 | 2026-09-11 10:38:29 |
| 108.165.87.0/24 | 18,783 | 2026-09-11 10:38:29 |
| 142.111.208.0/24 | 15,926 | 2026-09-11 10:38:29 |
| 142.111.141.0/24 | 15,897 | 2026-09-11 10:38:29 |
| 142.111.34.0/24 | 15,891 | 2026-09-11 10:38:29 |
| 142.111.67.0/24 | 15,868 | 2026-09-11 10:38:29 |
| 166.88.149.0/24 | 15,851 | 2026-09-11 10:38:29 |
| 142.111.155.0/24 | 15,824 | 2026-09-11 10:38:29 |
| 195.172.211.0/24 | 15,824 | 2026-09-11 10:38:29 |
| 195.172.150.0/24 | 15,808 | 2026-09-11 10:38:29 |
| 195.40.12.0/24 | 15,780 | 2026-09-11 10:38:29 |
| 195.40.5.0/24 | 15,754 | 2026-09-11 10:38:29 |
| 108.165.81.0/24 | 15,683 | 2026-09-11 10:38:29 |
| 195.40.70.0/23 | 15,673 | 2026-09-11 10:38:29 |
| 108.165.83.0/24 | 15,645 | 2026-09-11 10:38:29 |
| 173.234.64.0/22 | 15,641 | 2026-09-11 10:38:29 |
| 194.127.194.0/24 | 15,637 | 2026-09-11 10:38:29 |
| 195.40.160.0/23 | 15,634 | 2026-09-11 10:38:29 |
| 108.165.82.0/24 | 15,629 | 2026-09-11 10:38:29 |
| 195.40.122.0/23 | 15,627 | 2026-09-11 10:38:29 |
| 195.206.110.0/24 | 15,624 | 2026-09-11 10:38:29 |
| 195.40.120.0/23 | 15,612 | 2026-09-11 10:38:29 |
| 194.127.181.0/24 | 15,597 | 2026-09-11 10:38:29 |
| 142.91.108.0/22 | 15,571 | 2026-09-11 10:38:29 |
| 194.127.183.0/24 | 15,560 | 2026-09-11 10:38:29 |
| 194.127.177.0/24 | 15,536 | 2026-09-11 10:38:29 |
| 142.91.104.0/23 | 15,512 | 2026-09-11 10:38:29 |
| 142.91.106.0/23 | 15,503 | 2026-09-11 10:38:29 |
| 108.165.180.0/23 | 15,387 | 2026-09-11 10:38:29 |
| 204.217.210.0/24 | 15,380 | 2026-09-11 10:38:29 |
| 188.116.6.0/23 | 15,328 | 2026-09-11 10:38:29 |
| 50.114.3.0/24 | 15,227 | 2026-09-11 10:38:29 |
| 50.114.92.0/24 | 15,182 | 2026-09-11 10:38:29 |
| 5.188.222.0/24 | 15,107 | 2026-09-11 10:38:29 |
| 23.27.243.0/24 | 15,025 | 2026-09-11 10:38:29 |
| 23.27.14.0/24 | 14,995 | 2026-09-11 10:38:29 |
| 23.27.127.0/24 | 14,994 | 2026-09-11 10:38:29 |
| 23.27.23.0/24 | 14,991 | 2026-09-11 10:38:29 |
| 64.79.242.0/24 | 14,967 | 2026-09-11 10:38:29 |
| 23.81.40.0/21 | 14,808 | 2026-09-11 10:38:29 |
| 45.147.60.0/24 | 14,795 | 2026-09-11 10:38:29 |
| 23.26.44.0/22 | 14,794 | 2026-09-11 10:38:29 |
| 23.106.224.0/21 | 14,788 | 2026-09-11 10:38:29 |
Showing top 50 of 54 announced prefixes by sample volume.
Frequently Asked Questions
What is AS134351?
AS134351 is an Autonomous System Number assigned to Leaseweb Japan K.K.. 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 AS134351 announce?
AS134351 announces 21.0K IPv4 addresses distributed across 47 routed CIDR prefixes. The network is registered in Japan.
Who operates AS134351?
AS134351 is operated by Leaseweb Japan K.K.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.
What country is AS134351 registered in?
AS134351 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
