WHOIS Lookup

Overview

WHOIS Lookup is a domain WHOIS API: it queries the registry for a domain name and returns its registration record (registrar, creation, update and expiry dates, EPP status codes and authoritative nameservers) plus domain age computed from the creation date. Paid plans extend it to IP address and ASN WHOIS.

Live Test WHOIS Lookup API →

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

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curl "https://api.apiverve.com/v1/whoislookup?domain=myspace.com" \
  -H "x-api-key: your_api_key_here"

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const res = await fetch('https://api.apiverve.com/v1/whoislookup?domain=myspace.com', {
  headers: { 'x-api-key': 'your_api_key_here' },
});

if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);

const { data } = await res.json();
console.log(data);

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import requests

res = requests.get(
    "https://api.apiverve.com/v1/whoislookup?domain=myspace.com",
    headers={"x-api-key": "your_api_key_here"},
    timeout=15,
)
res.raise_for_status()

print(res.json()["data"])

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package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/whoislookup?domain=myspace.com", nil)
	req.Header.Set("x-api-key", "your_api_key_here")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	out, _ := io.ReadAll(res.Body)
	fmt.Println(string(out))
}

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

Parameters

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

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{
  "status": "ok",
  "error": null,
  "data": {
    "domainName": "MYSPACE.COM",
    "registryDomainID": "3877095_DOMAIN_COM-VRSN",
    "createdDate": "1996-02-22T05:00:00Z",
    "expiryDate": "2029-02-23T05:00:00Z",
    "updatedDate": "2023-01-17T00:16:21Z",
    "domainStatus": [
      "client delete prohibited https://icann.org/epp#client delete prohibited",
      "client renew prohibited https://icann.org/epp#client renew prohibited",
      "client transfer prohibited https://icann.org/epp#client transfer prohibited",
      "client update prohibited https://icann.org/epp#client update prohibited"
    ],
    "dNSSEC": "unsigned",
    "registrar": "GoDaddy.com, LLC",
    "registrarIANAID": "146",
    "registrarURL": "http://www.godaddy.com",
    "registrarAbuseContactEmail": "[email protected]",
    "registrarAbuseContactPhone": "tel:480-624-2505",
    "nameServers": [
      "ns-cloud-a2.googledomains.com",
      "ns-cloud-a3.googledomains.com",
      "ns-cloud-a4.googledomains.com",
      "ns-cloud-a1.googledomains.com"
    ],
    "domain": "myspace.com",
    "fetchedAtUTC": "2025-12-17T01:54:05.069Z",
    "tld": "com",
    "status": "active",
    "domainAgeDays": 11094,
    "domainAgeYears": 30.4,
    "isRecentlyRegistered": false,
    "trustScore": 93,
    "trustLevel": "high"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

Start from a template

A working app built on this API, ready to deploy with your own key. Vercel asks for the key when you deploy; the code is on GitHub to change first.

WHOIS Lookup

Who a domain is registered with, how old it is, when it expires and its name servers.

• Python
• Flask

Deploy to VercelSee the template →

Use cases

Expiration Monitoring

Domain portfolio managers inspect expiration dates and registrar details to schedule timely renewals before web properties lapse or drop.

Phishing Detection

Security teams flag newly created sender domains during user onboarding by reading domain age in days directly from the registration record.

Trademark Infringement Review

When auditing suspicious brand lookalikes, legal specialists identify the sponsoring registrar and nameserver hosts to route takedown notices accurately.

Vendor Infrastructure Auditing

Evaluate third-party vendor websites by verifying active domain status codes, current registration timelines, and authoritative nameserver delegations.

Other ways to use WHOIS Lookup

Set up WHOIS Lookup on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.

Related

More in Domain Data: