Network · AS57948

AS57948 Cobalt Group BV

AS57948 (Cobalt Group BV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS57948

OwnerCobalt Group BV
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

195.253.208.0/22
91.236.244.0/23
2.57.40.0/23
2.57.42.0/24
185.70.44.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS57948 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 AS57948

Is AS57948 a datacenter or VPN network?

AS57948 (Cobalt Group BV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS57948?

AS57948 is registered to Cobalt Group BV. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS57948?

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.