Network · AS7521

AS7521 INTERNET MULTIFEED CO.

AS7521 (INTERNET MULTIFEED CO.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS7521

OwnerINTERNET MULTIFEED CO.
KindInternet service provider
Servers, not peopleno
IPv4 addresses4,608
IPv4 ranges7
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

210.173.160.0/21
210.173.180.0/22
210.173.186.0/23
210.173.178.0/24
210.173.172.0/24
210.173.170.0/24
210.173.168.0/24

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

Check an IP address →

Detect it in code

Spot AS7521 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 AS7521

Is AS7521 a datacenter or VPN network?

AS7521 (INTERNET MULTIFEED CO.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS7521?

AS7521 is registered to INTERNET MULTIFEED CO.. It announces about 4,608 IPv4 addresses.

How do I detect traffic from AS7521?

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.