Network · AS51388

AS51388 UAB Marsatas

AS51388 (UAB Marsatas) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51388

OwnerUAB Marsatas
KindInternet service provider
Servers, not peopleno
IPv4 addresses6,144
IPv4 ranges4
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

88.216.48.0/21
31.135.216.0/21
91.230.12.0/22
84.32.144.0/22

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

Check an IP address →

Detect it in code

Spot AS51388 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 AS51388

Is AS51388 a datacenter or VPN network?

AS51388 (UAB Marsatas) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51388?

AS51388 is registered to UAB Marsatas. It announces about 6,144 IPv4 addresses.

How do I detect traffic from AS51388?

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.