Network · AS1881

AS1881 FMV

AS1881 (FMV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS1881

OwnerFMV
KindInternet service provider
Servers, not peopleno
IPv4 addresses66,048
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

143.118.0.0/16
192.36.146.0/24
192.121.30.0/24

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

Check an IP address →

Detect it in code

Spot AS1881 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 AS1881

Is AS1881 a datacenter or VPN network?

AS1881 (FMV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS1881?

AS1881 is registered to FMV. It announces about 66,048 IPv4 addresses.

How do I detect traffic from AS1881?

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.