Network · AS3741

AS3741 Dimension Data

AS3741 (Dimension Data) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS3741

OwnerDimension Data
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,607,104
IPv4 ranges504
IPv6 ranges21

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

196.212.0.0/14
164.148.0.0/15
197.96.0.0/16
197.103.0.0/16
197.100.0.0/16
196.36.0.0/16
196.34.0.0/16
196.211.0.0/16
196.14.0.0/16
168.209.0.0/16
168.142.0.0/16
164.150.0.0/16

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

Check an IP address →

Detect it in code

Spot AS3741 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 AS3741

Is AS3741 a datacenter or VPN network?

AS3741 (Dimension Data) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS3741?

AS3741 is registered to Dimension Data. It announces about 2,607,104 IPv4 addresses.

How do I detect traffic from AS3741?

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.