Network · AS12129

AS12129 123.Net, Inc.

AS12129 (123.Net, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12129

Owner123.Net, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses162,560
IPv4 ranges80
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

152.160.0.0/18
69.39.64.0/19
209.131.0.0/19
207.91.224.0/19
152.160.96.0/19
74.126.0.0/20
66.103.224.0/20
65.183.176.0/20
216.234.96.0/20
216.150.224.0/20
216.109.192.0/20
209.124.48.0/20

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

Check an IP address →

Detect it in code

Spot AS12129 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 AS12129

Is AS12129 a datacenter or VPN network?

AS12129 (123.Net, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12129?

AS12129 is registered to 123.Net, Inc.. It announces about 162,560 IPv4 addresses.

How do I detect traffic from AS12129?

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.