AS134351 Leaseweb Japan K.K.
Unclassified · based in Japan · IPLogs default verdict: Checked per IP
- ASN
- AS134351
- Name
- Leaseweb Japan K.K.
- Category
- Unclassified
- Country
- Japan
- IPLogs verdict
- Checked per IP
- Registry
- APNIC
- Allocated
- 2020-03-13
- PeeringDB
- Yes
- Proxy backbone
- No
About Leaseweb Japan K.K.
Leaseweb Japan K.K. (AS134351) is registered with APNIC in Japan and was allocated on 2020-03-13. Not enough registry signal to classify the whole ASN. IPLogs still classifies individual IPs in it via MaxMind, reverse DNS, and active probing.
How IPLogs classifies AS134351
When the detection engine sees an IP that routes through AS134351, it checks three lists: (1) the curated VPN-provider ASN list, (2) the datacenter / hosting ASN list, and (3) the trusted CDN allowlist. Matches produce one of vpn_asn, dc_ip, or no flag respectively. Keywords in the org name (e.g. "vpn", "proxy", "anonym") may also trigger vpn_org_keyword even for unknown ASNs.
Use the ASN as a shortcut when you want to block a whole hosting provider at the edge rather than maintaining a per-IP list.
Authoritative sources for AS134351
Third-party registries where you can verify the announcements, peer relationships, and WHOIS registration for this ASN.
Frequently asked questions about AS134351
+Is AS134351 (Leaseweb Japan K.K.) a VPN, datacenter, or residential network?
IPLogs classifies Leaseweb Japan K.K. (AS134351) as a unclassified network based in Japan. The default verdict for any IP that routes through this ASN is "Checked per IP".
+Who operates AS134351 and where is it registered?
Leaseweb Japan K.K. (AS134351) is registered with APNIC, operates in Japan, was allocated on 2020-03-13. It is listed in PeeringDB.
+How do I check or block AS134351 traffic?
Send any suspect IP to the IPLogs API — POST https://iplogs.com/v1/check with body {"ip":"<ip>"} — and the response reports the originating ASN plus whether it matched the VPN, datacenter, or CDN lists. To block a whole hosting network at the edge, filter on AS134351 instead of maintaining a per-IP list. Copy-paste recipes for Cloudflare WAF, Nginx, and Stripe Radar are at /guides/block-vpn-traffic.