Network · AS31103

AS31103 Keyweb AG

AS31103 (Keyweb AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS31103

  • OwnerKeyweb AG
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses37,632
  • IPv4 ranges15
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 87.118.64.0/18
  • 84.19.160.0/19
  • 217.114.208.0/20
  • 95.169.184.0/21
  • 62.141.48.0/21
  • 62.141.56.0/22
  • 195.160.228.0/22
  • 95.169.182.0/23
  • 95.169.160.0/23
  • 62.141.60.0/23
  • 95.169.181.0/24
  • 95.169.169.0/24

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

Check an IP address →

Detect it in code

Spot AS31103 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 AS31103

Is AS31103 a datacenter or VPN network?

AS31103 (Keyweb AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS31103?

AS31103 is registered to Keyweb AG. It announces about 37,632 IPv4 addresses.

How do I detect traffic from AS31103?

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.