Network · AS399981

AS399981 CRST THE TRANSPORTATION SOLUTION

AS399981 (CRST THE TRANSPORTATION SOLUTION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS399981

OwnerCRST THE TRANSPORTATION SOLUTION
KindInternet service provider
Servers, not peopleno
IPv4 addresses256
IPv4 ranges1
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

208.99.58.0/24

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

Check an IP address →

Detect it in code

Spot AS399981 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 AS399981

Is AS399981 a datacenter or VPN network?

AS399981 (CRST THE TRANSPORTATION SOLUTION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS399981?

AS399981 is registered to CRST THE TRANSPORTATION SOLUTION. It announces about 256 IPv4 addresses.

How do I detect traffic from AS399981?

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.