Network · AS5610

AS5610 O2 Czech Republic, a.s.

AS5610 (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

AS5610

OwnerO2 Czech Republic, a.s.
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,540,608
IPv4 ranges47
IPv6 ranges4

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

90.180.0.0/14
88.100.0.0/14
90.178.0.0/15
85.70.0.0/15
85.160.0.0/15
109.80.0.0/15
90.177.0.0/16
83.208.0.0/16
80.188.0.0/16
160.218.0.0/16
90.176.128.0/17
37.188.128.0/17

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS5610 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 AS5610

Is AS5610 a datacenter or VPN network?

AS5610 (O2 Czech Republic, a.s.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS5610?

AS5610 is registered to O2 Czech Republic, a.s.. It announces about 1,540,608 IPv4 addresses.

How do I detect traffic from AS5610?

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.