Network · AS2

AS2 University of Delaware

AS2 (University of Delaware) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2

OwnerUniversity of Delaware
KindInternet service provider
Servers, not peopleno
IPv4 addresses78,336
IPv4 ranges5
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

128.4.0.0/16
171.79.128.0/19
91.143.144.0/20
189.76.77.0/24
189.39.185.0/24

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

Check an IP address →

Detect it in code

Spot AS2 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 AS2

Is AS2 a datacenter or VPN network?

AS2 (University of Delaware) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2?

AS2 is registered to University of Delaware. It announces about 78,336 IPv4 addresses.

How do I detect traffic from AS2?

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.