Network · AS2381

AS2381 WiscNet

AS2381 (WiscNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2381

OwnerWiscNet
KindInternet service provider
Servers, not peopleno
IPv4 addresses506,880
IPv4 ranges97
IPv6 ranges22

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

216.56.0.0/16
170.125.0.0/16
165.128.0.0/16
140.189.0.0/16
140.104.0.0/16
199.197.64.0/18
144.89.0.0/18
205.213.96.0/19
205.213.32.0/19
205.213.128.0/19
198.150.192.0/19
198.150.128.0/19

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS2381 traffic at signup.

Send the visitor's IP. The response includes the ASN, the owner and flags.hosting.

curl https://veqen-app.com/v1/ip/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "203.0.113.7"}'

import os, requests

r = requests.post(
    "https://veqen-app.com/v1/ip/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"ip": "203.0.113.7"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])

const res = await fetch("https://veqen-app.com/v1/ip/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"ip": "203.0.113.7"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);

Questions

About AS2381

Is AS2381 a datacenter or VPN network?

AS2381 (WiscNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2381?

AS2381 is registered to WiscNet. It announces about 506,880 IPv4 addresses.

How do I detect traffic from AS2381?

Call the Veqen IP check with the visitor's address. The response includes the ASN, the owner and whether the network is a datacenter, VPN network, relay or ISP.