Network · AS19661

AS19661 Susquehanna International Group, LLP

AS19661 (Susquehanna International Group, LLP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS19661

OwnerSusquehanna International Group, LLP
KindInternet service provider
Servers, not peopleno
IPv4 addresses65,280
IPv4 ranges8
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

141.162.0.0/17
141.162.192.0/18
141.162.160.0/19
141.162.128.0/20
141.162.144.0/21
141.162.152.0/22
141.162.156.0/23
141.162.158.0/24

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

Check an IP address →

Detect it in code

Spot AS19661 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 AS19661

Is AS19661 a datacenter or VPN network?

AS19661 (Susquehanna International Group, LLP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS19661?

AS19661 is registered to Susquehanna International Group, LLP. It announces about 65,280 IPv4 addresses.

How do I detect traffic from AS19661?

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.