Network · AS39738

AS39738 Telecom Castilla La Mancha SA

AS39738 (Telecom Castilla La Mancha SA) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS39738

  • OwnerTelecom Castilla La Mancha SA
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses16,384
  • IPv4 ranges1
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 82.86.0.0/18

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

Check an IP address →

Detect it in code

Spot AS39738 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 AS39738

Is AS39738 a datacenter or VPN network?

AS39738 (Telecom Castilla La Mancha SA) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS39738?

AS39738 is registered to Telecom Castilla La Mancha SA. It announces about 16,384 IPv4 addresses.

How do I detect traffic from AS39738?

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.