Network · AS5653

AS5653 University of California San Francisco

AS5653 (University of California San Francisco) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS5653

OwnerUniversity of California San Francisco
KindInternet service provider
Servers, not peopleno
IPv4 addresses196,096
IPv4 ranges9
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

64.54.0.0/16
128.218.0.0/16
169.230.128.0/17
169.230.0.0/18
169.230.96.0/19
169.230.80.0/20
169.230.64.0/21
169.230.72.0/22
169.230.78.0/23

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

Check an IP address →

Detect it in code

Spot AS5653 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 AS5653

Is AS5653 a datacenter or VPN network?

AS5653 (University of California San Francisco) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS5653?

AS5653 is registered to University of California San Francisco. It announces about 196,096 IPv4 addresses.

How do I detect traffic from AS5653?

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.