Network · AS27370

AS27370 City of Boston

AS27370 (City of Boston) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS27370

OwnerCity of Boston
KindInternet service provider
Servers, not peopleno
IPv4 addresses70,144
IPv4 ranges4
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

140.241.0.0/16
216.163.208.0/20
204.167.88.0/24
192.80.65.0/24

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

Check an IP address →

Detect it in code

Spot AS27370 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 AS27370

Is AS27370 a datacenter or VPN network?

AS27370 (City of Boston) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS27370?

AS27370 is registered to City of Boston. It announces about 70,144 IPv4 addresses.

How do I detect traffic from AS27370?

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.