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NetworkCalc

DNS lookups, subnet math, and network tools over JSON

🔧 Developer ToolsUNMONITOREDchecked 1h ago
AUTH NONECORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

A keyless API covering DNS record lookups, IP and subnet calculations, and related networking utilities. The DNS endpoint returns A, MX, NS, TXT and other records in a single JSON payload. Separate account-only endpoints exist, but the core tools need no auth.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
Uptime history
—%90 days
—%30 days
—P50 · ms
—P95 · ms
operationalpartialdownno data
Live response samplecaptured by our last successful check
GET https://networkcalc.com/api/dns/lookup/google.com

{
  "status": "OK",
  "hostname": "google.com",
  "records": {
    "A": [
      {
        "address": "142.250.72.14",
        "ttl": 7
      }
    ],
    "MX": [
      {
        "exchange": "smtp.google.com",
        "priority": 10
      }
    ],
    "NS": [
      {
        "nameserver": "ns1.google.com"
      }
    ]
  }
}
Call itcurl · fetch · python
curl "https://networkcalc.com/api/dns/lookup/google.com"
const res = await fetch("https://networkcalc.com/api/dns/lookup/google.com");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://networkcalc.com/api/dns/lookup/google.com")
print(res.json())
Endpoints · 5On scheduleFULL DOCS ↗
First rollup pending — GET /dns/lookup/google.com has been probed
GET/dns/lookup/google.comPROBED

DNS lookups, subnet math, and network tools over JSON

GET/dns

Dns — documented GET route.

GET/dns/1

Dns details by ID (example: 1).

GET/dns?limit=10

Dns — documented GET route.

GET/dns/search?q=test

Search by query parameters.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

NetworkCalc: common questions

Is NetworkCalc free to use?

Yes — NetworkCalc is a free developer tools API. Free tier: Free public API, no key. Whether the free tier allows commercial use is unclear — check the provider docs.

Does NetworkCalc need an API key?

No — NetworkCalc needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).

Can I call NetworkCalc from the browser?

Yes — NetworkCalc returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is NetworkCalc up right now?

As of our last scheduled check, NetworkCalc is unmonitored. We re-probe it every sweep — the status badge and uptime chart above always show the latest.