Network · AS131

AS131 University of California, Santa Barbara

AS131 (University of California, Santa Barbara) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS131

OwnerUniversity of California, Santa Barbar
KindInternet service provider
Servers, not peopleno
IPv4 addresses132,096
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

169.231.0.0/16
128.111.0.0/16
192.150.216.0/23
199.120.153.0/24
192.35.222.0/24

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

Check an IP address →

Detect it in code

Spot AS131 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 AS131

Is AS131 a datacenter or VPN network?

AS131 (University of California, Santa Barbara) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS131?

AS131 is registered to University of California, Santa Barbara. It announces about 132,096 IPv4 addresses.

How do I detect traffic from AS131?

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.