Network · AS38253

AS38253 Hanoi Telecom JSC

AS38253 (Hanoi Telecom JSC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS38253

OwnerHanoi Telecom JSC
KindInternet service provider
Servers, not peopleno
IPv4 addresses3,328
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

103.9.208.0/22
103.5.208.0/22
103.172.236.0/23
103.17.140.0/23
116.118.68.0/24

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

Check an IP address →

Detect it in code

Spot AS38253 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 AS38253

Is AS38253 a datacenter or VPN network?

AS38253 (Hanoi Telecom JSC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS38253?

AS38253 is registered to Hanoi Telecom JSC. It announces about 3,328 IPv4 addresses.

How do I detect traffic from AS38253?

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.