Network · AS21017

AS21017 PJSC Rostelecom

AS21017 (PJSC Rostelecom) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21017

OwnerPJSC Rostelecom
KindInternet service provider
Servers, not peopleno
IPv4 addresses20,480
IPv4 ranges5
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

88.83.192.0/19
80.82.32.0/19
95.32.160.0/21
95.32.96.0/22
95.32.224.0/22

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

Check an IP address →

Detect it in code

Spot AS21017 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 AS21017

Is AS21017 a datacenter or VPN network?

AS21017 (PJSC Rostelecom) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21017?

AS21017 is registered to PJSC Rostelecom. It announces about 20,480 IPv4 addresses.

How do I detect traffic from AS21017?

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.