Network · AS21578

AS21578 Universidad autonoma de Bucaramanga

AS21578 (Universidad autonoma de Bucaramanga) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21578

OwnerUniversidad autonoma de Bucaramanga
KindInternet service provider
Servers, not peopleno
IPv4 addresses512
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

190.68.254.0/24
181.119.254.0/24

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

Check an IP address →

Detect it in code

Spot AS21578 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 AS21578

Is AS21578 a datacenter or VPN network?

AS21578 (Universidad autonoma de Bucaramanga) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21578?

AS21578 is registered to Universidad autonoma de Bucaramanga. It announces about 512 IPv4 addresses.

How do I detect traffic from AS21578?

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.