Network · AS16399

AS16399 First Communications LLC

AS16399 (First Communications LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS16399

  • OwnerFirst Communications LLC
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses127,488
  • IPv4 ranges21
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 168.93.64.0/18
  • 168.93.128.0/18
  • 74.222.32.0/19
  • 69.7.192.0/19
  • 66.244.160.0/19
  • 64.27.128.0/19
  • 216.21.32.0/19
  • 216.159.224.0/19
  • 216.146.64.0/19
  • 216.130.96.0/19
  • 207.135.160.0/19
  • 168.92.0.0/19

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS16399 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 AS16399

Is AS16399 a datacenter or VPN network?

AS16399 (First Communications LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS16399?

AS16399 is registered to First Communications LLC. It announces about 127,488 IPv4 addresses.

How do I detect traffic from AS16399?

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.