Network · AS21758

AS21758 Modine Manufacturing Company

AS21758 (Modine Manufacturing Company) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21758

OwnerModine Manufacturing Company
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,792
IPv4 ranges6
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

198.40.116.0/23
198.40.99.0/24
198.40.120.0/24
198.40.119.0/24
198.40.109.0/24
198.40.100.0/24

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

Check an IP address →

Detect it in code

Spot AS21758 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 AS21758

Is AS21758 a datacenter or VPN network?

AS21758 (Modine Manufacturing Company) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21758?

AS21758 is registered to Modine Manufacturing Company. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS21758?

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.