Network · AS237

AS237 Merit Network Inc.

AS237 (Merit Network Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS237

OwnerMerit Network Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,142,720
IPv4 ranges78
IPv6 ranges23

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

35.64.0.0/14
35.68.0.0/15
35.24.0.0/15
207.72.0.0/15
198.110.0.0/15
35.70.0.0/16
35.58.0.0/16
35.40.0.0/16
35.38.0.0/16
35.37.0.0/16
35.16.0.0/16
207.74.0.0/16

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

Check an IP address →

Detect it in code

Spot AS237 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 AS237

Is AS237 a datacenter or VPN network?

AS237 (Merit Network Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS237?

AS237 is registered to Merit Network Inc.. It announces about 2,142,720 IPv4 addresses.

How do I detect traffic from AS237?

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.