Network · AS23601

AS23601 tsis

AS23601 (tsis) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS23601

  • Ownertsis
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses4,352
  • IPv4 ranges14
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 114.108.28.0/22
  • 211.53.255.0/24
  • 211.53.18.0/24
  • 211.50.98.0/24
  • 211.50.154.0/24
  • 211.50.108.0/24
  • 211.40.67.0/24
  • 211.40.189.0/24
  • 211.32.34.0/24
  • 211.32.100.0/24
  • 211.170.235.0/24
  • 211.118.34.0/24

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

Check an IP address →

Detect it in code

Spot AS23601 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 AS23601

Is AS23601 a datacenter or VPN network?

AS23601 (tsis) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS23601?

AS23601 is registered to tsis. It announces about 4,352 IPv4 addresses.

How do I detect traffic from AS23601?

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.