Network · AS12387

AS12387 TON Total optical Networks AG

AS12387 (TON Total optical Networks AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12387

OwnerTON Total optical Networks AG
KindInternet service provider
Servers, not peopleno
IPv4 addresses9,216
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

77.237.192.0/19
195.4.176.0/22

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

Check an IP address →

Detect it in code

Spot AS12387 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 AS12387

Is AS12387 a datacenter or VPN network?

AS12387 (TON Total optical Networks AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12387?

AS12387 is registered to TON Total optical Networks AG. It announces about 9,216 IPv4 addresses.

How do I detect traffic from AS12387?

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.