Network · AS6303

AS6303 Barclays Capital

AS6303 (Barclays Capital) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS6303

  • OwnerBarclays Capital
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses7,936
  • IPv4 ranges13
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 146.127.224.0/21
  • 167.203.60.0/22
  • 167.203.48.0/22
  • 146.127.240.0/22
  • 157.83.142.0/23
  • 146.127.40.0/23
  • 63.78.242.0/24
  • 192.147.57.0/24
  • 192.107.28.0/24
  • 146.127.61.0/24
  • 146.127.246.0/24
  • 146.127.244.0/24

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

Check an IP address →

Detect it in code

Spot AS6303 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 AS6303

Is AS6303 a datacenter or VPN network?

AS6303 (Barclays Capital) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS6303?

AS6303 is registered to Barclays Capital. It announces about 7,936 IPv4 addresses.

How do I detect traffic from AS6303?

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.