Network · AS21515

AS21515 SISKIYOU TELEPHONE COMPANY

AS21515 (SISKIYOU TELEPHONE COMPANY) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21515

OwnerSISKIYOU TELEPHONE COMPANY
KindInternet service provider
Servers, not peopleno
IPv4 addresses4,608
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

137.119.64.0/20
137.119.26.0/23

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

Check an IP address →

Detect it in code

Spot AS21515 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 AS21515

Is AS21515 a datacenter or VPN network?

AS21515 (SISKIYOU TELEPHONE COMPANY) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21515?

AS21515 is registered to SISKIYOU TELEPHONE COMPANY. It announces about 4,608 IPv4 addresses.

How do I detect traffic from AS21515?

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.