Network · AS19855

AS19855 Masergy Communications, Inc.

AS19855 (Masergy Communications, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS19855

  • OwnerMasergy Communications, Inc.
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses157,440
  • IPv4 ranges53
  • IPv6 ranges5
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 64.138.0.0/17
  • 65.96.128.0/18
  • 65.96.0.0/18
  • 64.47.64.0/18
  • 64.47.224.0/19
  • 64.47.128.0/19
  • 64.138.160.0/19
  • 80.241.64.0/20
  • 64.47.48.0/20
  • 64.47.176.0/20
  • 64.138.144.0/20
  • 94.199.128.0/21

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

Check an IP address →

Detect it in code

Spot AS19855 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 AS19855

Is AS19855 a datacenter or VPN network?

AS19855 (Masergy Communications, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS19855?

AS19855 is registered to Masergy Communications, Inc.. It announces about 157,440 IPv4 addresses.

How do I detect traffic from AS19855?

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.