Network · AS22843

AS22843 Proofpoint, Inc.

AS22843 (Proofpoint, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS22843

OwnerProofpoint, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses12,800
IPv4 ranges17
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

205.220.176.0/21
148.163.136.0/21
67.231.152.0/22
208.56.60.0/22
208.56.12.0/22
205.220.172.0/22
148.163.152.0/22
67.231.156.0/23
66.159.250.0/23
66.159.238.0/23
148.163.158.0/23
66.159.228.0/24

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

Check an IP address →

Detect it in code

Spot AS22843 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 AS22843

Is AS22843 a datacenter or VPN network?

AS22843 (Proofpoint, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS22843?

AS22843 is registered to Proofpoint, Inc.. It announces about 12,800 IPv4 addresses.

How do I detect traffic from AS22843?

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.