Network · AS396431

AS396431 T38Fax Incorporated

AS396431 (T38Fax Incorporated) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS396431

OwnerT38Fax Incorporated
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,280
IPv4 ranges4
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

130.51.64.0/23
8.9.39.0/24
8.20.91.0/24
130.51.66.0/24

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

Check an IP address →

Detect it in code

Spot AS396431 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 AS396431

Is AS396431 a datacenter or VPN network?

AS396431 (T38Fax Incorporated) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS396431?

AS396431 is registered to T38Fax Incorporated. It announces about 1,280 IPv4 addresses.

How do I detect traffic from AS396431?

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.