Network · AS55898

AS55898 Yahoo Japan Corporation

AS55898 (Yahoo Japan Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS55898

OwnerYahoo Japan Corporation
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

103.2.244.0/22
211.14.28.0/23
211.14.26.0/23
211.14.8.0/24
203.141.54.0/24

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

Check an IP address →

Detect it in code

Spot AS55898 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 AS55898

Is AS55898 a datacenter or VPN network?

AS55898 (Yahoo Japan Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS55898?

AS55898 is registered to Yahoo Japan Corporation. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS55898?

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.