Network · AS31246

AS31246 O2 Czech Republic, a.s.

AS31246 (O2 Czech Republic, a.s.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS31246

OwnerO2 Czech Republic, a.s.
KindInternet service provider
Servers, not peopleno
IPv4 addresses66,560
IPv4 ranges5
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

83.240.0.0/17
95.82.128.0/18
46.39.160.0/19
213.155.224.0/19
185.51.240.0/22

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

Check an IP address →

Detect it in code

Spot AS31246 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 AS31246

Is AS31246 a datacenter or VPN network?

AS31246 (O2 Czech Republic, a.s.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS31246?

AS31246 is registered to O2 Czech Republic, a.s.. It announces about 66,560 IPv4 addresses.

How do I detect traffic from AS31246?

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.