Network · AS26121

AS26121 Jeppesen Sanderson Inc.

AS26121 (Jeppesen Sanderson Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS26121

  • OwnerJeppesen Sanderson Inc.
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses3,328
  • IPv4 ranges8
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 169.143.244.0/22
  • 169.143.10.0/23
  • 169.143.0.0/23
  • 169.143.8.0/24
  • 169.143.6.0/24
  • 169.143.222.0/24
  • 169.143.22.0/24
  • 169.143.16.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS26121 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 AS26121

Is AS26121 a datacenter or VPN network?

AS26121 (Jeppesen Sanderson Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS26121?

AS26121 is registered to Jeppesen Sanderson Inc.. It announces about 3,328 IPv4 addresses.

How do I detect traffic from AS26121?

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.