Network · AS703

AS703 Verizon Business

AS703 (Verizon Business) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS703

  • OwnerVerizon Business
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses694,272
  • IPv4 ranges161
  • IPv6 ranges2
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 203.61.0.0/16
  • 203.103.0.0/16
  • 137.109.0.0/16
  • 210.84.128.0/17
  • 203.102.128.0/17
  • 219.90.0.0/18
  • 210.84.64.0/18
  • 210.81.128.0/18
  • 210.81.0.0/18
  • 210.80.0.0/18
  • 203.110.0.0/18
  • 203.108.128.0/18

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

Check an IP address →

Detect it in code

Spot AS703 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 AS703

Is AS703 a datacenter or VPN network?

AS703 (Verizon Business) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS703?

AS703 is registered to Verizon Business. It announces about 694,272 IPv4 addresses.

How do I detect traffic from AS703?

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.