Network · AS41733

AS41733 JSC "ER-Telecom Holding"

AS41733 (JSC "ER-Telecom Holding") looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS41733

  • OwnerJSC "ER-Telecom Holding"
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses267,776
  • IPv4 ranges58
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 5.19.128.0/17
  • 84.52.64.0/18
  • 5.18.0.0/18
  • 5.17.128.0/18
  • 5.16.192.0/18
  • 188.134.64.0/18
  • 109.167.128.0/18
  • 5.19.64.0/19
  • 5.18.64.0/19
  • 5.18.224.0/19
  • 5.18.128.0/19
  • 5.17.0.0/19

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

Check an IP address →

Detect it in code

Spot AS41733 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 AS41733

Is AS41733 a datacenter or VPN network?

AS41733 (JSC "ER-Telecom Holding") looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS41733?

AS41733 is registered to JSC "ER-Telecom Holding". It announces about 267,776 IPv4 addresses.

How do I detect traffic from AS41733?

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.