Network · AS20900

AS20900 IMS Networks SAS

AS20900 (IMS Networks SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS20900

  • OwnerIMS Networks SAS
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses78,592
  • IPv4 ranges14
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 137.129.0.0/16
  • 213.190.80.0/20
  • 31.217.232.0/21
  • 213.190.72.0/21
  • 213.190.64.0/22
  • 185.182.252.0/22
  • 91.214.114.0/23
  • 213.190.68.0/23
  • 194.4.12.0/23
  • 91.231.175.0/24
  • 213.190.71.0/24
  • 194.4.7.0/24

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

Check an IP address →

Detect it in code

Spot AS20900 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 AS20900

Is AS20900 a datacenter or VPN network?

AS20900 (IMS Networks SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS20900?

AS20900 is registered to IMS Networks SAS. It announces about 78,592 IPv4 addresses.

How do I detect traffic from AS20900?

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.