AS36599 SoftEther Project (University of Tsukuba)
vpn · based in Japan · IPLogs default verdict: VPN detected
- ASN
- AS36599
- Name
- SoftEther Project (University of Tsukuba)
- Category
- vpn
- Country
- Japan
- IPLogs verdict
- VPN detected
- Proxy backbone
- No
About SoftEther Project (University of Tsukuba)
SoftEther VPN — open-source multi-protocol VPN server popular with volunteer exit operators. Detection relies on SoftEther JA3 signatures and the vpngate.net relay list.
VPN providers using AS36599
Commercial VPN products that route exit traffic through SoftEther Project (University of Tsukuba). Any IP announced from this ASN is a confirmed VPN exit without requiring a probe.
How IPLogs classifies AS36599
When the detection engine sees an IP that routes through AS36599, 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 AS36599
Third-party registries where you can verify the announcements, peer relationships, and WHOIS registration for this ASN.
Frequently asked questions about AS36599
+Is AS36599 (SoftEther Project (University of Tsukuba)) a VPN, datacenter, or residential network?
IPLogs classifies SoftEther Project (University of Tsukuba) (AS36599) as a commercial VPN network based in Japan. The default verdict for any IP that routes through this ASN is "VPN detected".
+Which VPN providers use AS36599?
SoftEther VPN route exit traffic through SoftEther Project (University of Tsukuba). Any IP announced from this ASN is treated as a confirmed VPN exit, with no active probe required.
+Who operates AS36599 and where is it registered?
SoftEther Project (University of Tsukuba) (AS36599) operates in Japan.
+How do I check or block AS36599 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 AS36599 instead of maintaining a per-IP list. Copy-paste recipes for Cloudflare WAF, Nginx, and Stripe Radar are at /guides/block-vpn-traffic.