Network · AS73

AS73 University of Washington

AS73 (University of Washington) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS73

  • OwnerUniversity of Washington
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses238,080
  • IPv4 ranges12
  • IPv6 ranges8
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 140.142.0.0/16
  • 128.95.0.0/16
  • 128.208.0.0/16
  • 69.91.192.0/18
  • 205.175.96.0/19
  • 173.250.160.0/19
  • 198.48.64.0/20
  • 198.48.80.0/21
  • 198.48.88.0/22
  • 108.179.140.0/22
  • 192.42.144.0/24
  • 192.26.136.0/24

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

Check an IP address →

Detect it in code

Spot AS73 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 AS73

Is AS73 a datacenter or VPN network?

AS73 (University of Washington) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS73?

AS73 is registered to University of Washington. It announces about 238,080 IPv4 addresses.

How do I detect traffic from AS73?

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.