Network · AS19399

AS19399 Region Stockholm

AS19399 (Region Stockholm) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS19399

  • OwnerRegion Stockholm
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses203,008
  • IPv4 ranges14
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 159.38.0.0/16
  • 147.180.0.0/16
  • 136.155.0.0/16
  • 192.44.240.0/21
  • 192.44.248.0/22
  • 194.4.8.0/23
  • 194.14.182.0/23
  • 194.1.186.0/23
  • 192.36.202.0/23
  • 193.182.247.0/24
  • 193.182.239.0/24
  • 192.71.123.0/24

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

Check an IP address →

Detect it in code

Spot AS19399 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 AS19399

Is AS19399 a datacenter or VPN network?

AS19399 (Region Stockholm) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS19399?

AS19399 is registered to Region Stockholm. It announces about 203,008 IPv4 addresses.

How do I detect traffic from AS19399?

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.