Network · AS5377

AS5377 Marlink AS

AS5377 (Marlink AS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS5377

  • OwnerMarlink AS
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses96,256
  • IPv4 ranges18
  • IPv6 ranges19
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 193.220.0.0/17
  • 77.70.192.0/18
  • 193.219.192.0/18
  • 77.70.128.0/19
  • 193.220.128.0/19
  • 193.220.240.0/20
  • 77.70.168.0/21
  • 193.220.168.0/21
  • 77.70.160.0/22
  • 193.220.220.0/22
  • 193.220.176.0/22
  • 193.220.164.0/22

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

Check an IP address →

Detect it in code

Spot AS5377 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 AS5377

Is AS5377 a datacenter or VPN network?

AS5377 (Marlink AS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS5377?

AS5377 is registered to Marlink AS. It announces about 96,256 IPv4 addresses.

How do I detect traffic from AS5377?

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.