Network check
ASN
AS18140
- OwnerYahoo Japan Corporation
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses4,096
- IPv4 ranges1
- IPv6 ranges0
Risk score0
Nothing suspicious found.
Network · AS18140
AS18140 Yahoo Japan Corporation
AS18140 (Yahoo Japan Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS18140 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 AS18140
Is AS18140 a datacenter or VPN network?
AS18140 (Yahoo Japan Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS18140?
AS18140 is registered to Yahoo Japan Corporation. It announces about 4,096 IPv4 addresses.
How do I detect traffic from AS18140?
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.