Network · AS131921

AS131921 GMO GlobalSign Holdings K.K.

AS131921 (GMO GlobalSign Holdings K.K.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS131921

  • OwnerGMO GlobalSign Holdings K.K.
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses92,928
  • IPv4 ranges13
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 153.122.0.0/16
  • 210.158.32.0/20
  • 180.222.176.0/20
  • 153.124.128.0/20
  • 153.123.0.0/20
  • 180.131.136.0/21
  • 153.124.144.0/21
  • 153.123.16.0/21
  • 133.117.152.0/21
  • 133.117.160.0/22
  • 133.117.148.0/22
  • 202.237.148.0/23

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

Check an IP address →

Detect it in code

Spot AS131921 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 AS131921

Is AS131921 a datacenter or VPN network?

AS131921 (GMO GlobalSign Holdings K.K.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS131921?

AS131921 is registered to GMO GlobalSign Holdings K.K.. It announces about 92,928 IPv4 addresses.

How do I detect traffic from AS131921?

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.