Network · AS3813

AS3813 Sogang University

AS3813 (Sogang University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS3813

  • OwnerSogang University
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses65,536
  • IPv4 ranges1
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 163.239.0.0/16

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

Check an IP address →

Detect it in code

Spot AS3813 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 AS3813

Is AS3813 a datacenter or VPN network?

AS3813 (Sogang University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS3813?

AS3813 is registered to Sogang University. It announces about 65,536 IPv4 addresses.

How do I detect traffic from AS3813?

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.