Network · AS50436

AS50436 Tele Columbus AG

AS50436 (Tele Columbus AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS50436

OwnerTele Columbus AG
KindInternet service provider
Servers, not peopleno
IPv4 addresses91,904
IPv4 ranges38
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

37.120.0.0/17
5.28.64.0/18
94.139.0.0/19
92.206.32.0/19
82.119.0.0/19
92.206.8.0/21
92.206.80.0/22
92.206.76.0/22
92.206.244.0/22
92.206.132.0/22
83.221.88.0/22
77.64.200.0/22

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

Check an IP address →

Detect it in code

Spot AS50436 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 AS50436

Is AS50436 a datacenter or VPN network?

AS50436 (Tele Columbus AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS50436?

AS50436 is registered to Tele Columbus AG. It announces about 91,904 IPv4 addresses.

How do I detect traffic from AS50436?

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.