Network · AS35280

AS35280 F5 Networks SARL

AS35280 (F5 Networks SARL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS35280

  • OwnerF5 Networks SARL
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses56,320
  • IPv4 ranges41
  • IPv6 ranges5
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 159.60.64.0/18
  • 159.60.128.0/18
  • 159.60.32.0/19
  • 5.182.212.0/22
  • 185.94.140.0/22
  • 185.160.8.0/22
  • 130.250.220.0/22
  • 103.135.56.0/22
  • 84.54.60.0/23
  • 203.185.34.0/23
  • 185.56.154.0/23
  • 185.142.148.0/23

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

Check an IP address →

Detect it in code

Spot AS35280 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 AS35280

Is AS35280 a datacenter or VPN network?

AS35280 (F5 Networks SARL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS35280?

AS35280 is registered to F5 Networks SARL. It announces about 56,320 IPv4 addresses.

How do I detect traffic from AS35280?

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.