Network · AS6431

AS6431 AT&T Enterprises, LLC

AS6431 (AT&T Enterprises, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS6431

  • OwnerAT&T Enterprises, LLC
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses200,192
  • IPv4 ranges7
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 135.207.0.0/16
  • 135.205.0.0/16
  • 135.197.0.0/16
  • 204.178.8.0/21
  • 12.106.32.0/22
  • 207.76.218.0/24
  • 192.20.225.0/24

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

Check an IP address →

Detect it in code

Spot AS6431 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 AS6431

Is AS6431 a datacenter or VPN network?

AS6431 (AT&T Enterprises, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS6431?

AS6431 is registered to AT&T Enterprises, LLC. It announces about 200,192 IPv4 addresses.

How do I detect traffic from AS6431?

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.