Network · AS21859

AS21859 Zenlayer Inc

AS21859 (Zenlayer Inc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21859

  • OwnerZenlayer Inc
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses666,368
  • IPv4 ranges844
  • IPv6 ranges95
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 23.90.128.0/18
  • 98.98.64.0/19
  • 98.98.32.0/19
  • 98.96.192.0/19
  • 193.118.96.0/19
  • 193.118.32.0/19
  • 192.169.96.0/19
  • 162.128.192.0/19
  • 162.128.160.0/19
  • 156.59.128.0/19
  • 156.59.0.0/19
  • 129.227.64.0/19

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

Check an IP address →

Detect it in code

Spot AS21859 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 AS21859

Is AS21859 a datacenter or VPN network?

AS21859 (Zenlayer Inc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21859?

AS21859 is registered to Zenlayer Inc. It announces about 666,368 IPv4 addresses.

How do I detect traffic from AS21859?

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.