Network · AS28278

AS28278 TELLFREE BRASIL TELEFONIA IP S.A.

AS28278 (TELLFREE BRASIL TELEFONIA IP S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS28278

  • OwnerTELLFREE BRASIL TELEFONIA IP S.A.
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses3,584
  • IPv4 ranges6
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 201.33.220.0/22
  • 201.33.208.0/22
  • 201.33.216.0/23
  • 201.33.212.0/23
  • 201.33.219.0/24
  • 201.33.214.0/24

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

Check an IP address →

Detect it in code

Spot AS28278 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 AS28278

Is AS28278 a datacenter or VPN network?

AS28278 (TELLFREE BRASIL TELEFONIA IP S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS28278?

AS28278 is registered to TELLFREE BRASIL TELEFONIA IP S.A.. It announces about 3,584 IPv4 addresses.

How do I detect traffic from AS28278?

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.