Network · AS63138

AS63138 Blue Shield of California

AS63138 (Blue Shield of California) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS63138

OwnerBlue Shield of California
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,280
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

165.253.34.0/23
165.253.134.0/23
165.253.42.0/24

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

Check an IP address →

Detect it in code

Spot AS63138 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 AS63138

Is AS63138 a datacenter or VPN network?

AS63138 (Blue Shield of California) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS63138?

AS63138 is registered to Blue Shield of California. It announces about 1,280 IPv4 addresses.

How do I detect traffic from AS63138?

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.