Network · AS26100

AS26100 National Oceanic and Atmospheric Administration

AS26100 (National Oceanic and Atmospheric Administration) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS26100

OwnerNational Oceanic and Atmospheric Admin
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,304
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

205.156.56.0/22
137.75.124.0/22
205.156.60.0/24

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

Check an IP address →

Detect it in code

Spot AS26100 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 AS26100

Is AS26100 a datacenter or VPN network?

AS26100 (National Oceanic and Atmospheric Administration) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS26100?

AS26100 is registered to National Oceanic and Atmospheric Administration. It announces about 2,304 IPv4 addresses.

How do I detect traffic from AS26100?

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.