Network · AS31004

AS31004 Schweizerische Bundesbahnen SBB

AS31004 (Schweizerische Bundesbahnen SBB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS31004

OwnerSchweizerische Bundesbahnen SBB
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,048
IPv4 ranges4
IPv6 ranges8

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

91.230.140.0/23
194.150.244.0/23
194.116.210.0/23
193.203.120.0/23

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

Check an IP address →

Detect it in code

Spot AS31004 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 AS31004

Is AS31004 a datacenter or VPN network?

AS31004 (Schweizerische Bundesbahnen SBB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS31004?

AS31004 is registered to Schweizerische Bundesbahnen SBB. It announces about 2,048 IPv4 addresses.

How do I detect traffic from AS31004?

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.