Network · AS77

AS77 Johns Hopkins University Applied Physics Laboratory

AS77 (Johns Hopkins University Applied Physics Laboratory) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS77

OwnerJohns Hopkins University Applied Physi
KindInternet service provider
Servers, not peopleno
IPv4 addresses66,048
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

128.244.0.0/16
204.9.130.0/24
204.9.128.0/24

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

Check an IP address →

Detect it in code

Spot AS77 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 AS77

Is AS77 a datacenter or VPN network?

AS77 (Johns Hopkins University Applied Physics Laboratory) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS77?

AS77 is registered to Johns Hopkins University Applied Physics Laboratory. It announces about 66,048 IPv4 addresses.

How do I detect traffic from AS77?

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.