Network · AS16591

AS16591 Google Fiber Inc.

AS16591 (Google Fiber Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS16591

  • OwnerGoogle Fiber Inc.
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses2,244,608
  • IPv4 ranges9
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 136.32.0.0/11
  • 99.198.128.0/17
  • 23.255.128.0/17
  • 107.188.128.0/17
  • 45.56.0.0/18
  • 23.228.128.0/18
  • 192.200.224.0/19
  • 216.21.160.0/20
  • 192.119.16.0/20

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

Check an IP address →

Detect it in code

Spot AS16591 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 AS16591

Is AS16591 a datacenter or VPN network?

AS16591 (Google Fiber Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS16591?

AS16591 is registered to Google Fiber Inc.. It announces about 2,244,608 IPv4 addresses.

How do I detect traffic from AS16591?

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.