check-domain-availability/check-domain-availability.html at main · toolzr/check-domain-availability · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Domain Availability Checker by Toolzr</title>
<meta name="description" content="Check if a domain name is available across popular TLDs using RDAP and DNS resolution.">
</head>
<body>
<h1>Domain Availability Checker</h1>
<input type="text" id="domainInput" placeholder="Enter domain name">
<button id="checkButton">Check Availability</button>
<h2>Results:</h2>
<pre id="results"></pre>

<p>This tool is brought to you by <a href="https://toolzr.com" target="_blank">Toolzr</a> and is open source, licensed under the <a href="https://opensource.org/licenses/MIT" target="_blank">MIT License</a>. The online version can be found at <a href="https://toolzr.com/domain-availability" target="_blank">toolzr.com/domain-availability</a>.</p>

<script>
const tlds = [".com", ".net", ".org", ".io", ".cc", ".me", ".info", ".top", ".online", ".xyz"];

async function domainResolves(domain) {
    try {
        const response = await fetch(`https://dns.google/resolve?name=${domain}&type=A`);
        const data = await response.json();
        return data.Answer !== undefined;
    } catch (error) {
        return false;
    }
}

async function checkDomain(domain) {
    const url = `https://rdap.org/domain/${domain}`;
    try {
        const response = await fetch(url);
        if (!response.ok) {
            if (response.status === 404) {
                return !(await domainResolves(domain));
            }
            throw new Error(`HTTP error! Status: ${response.status}`);
        }
        const data = await response.json();
        return !data.events;
    } catch (error) {
        return false;
    }
}

document.getElementById('checkButton').addEventListener('click', async function() {
    const input = document.getElementById("domainInput").value.trim();
    const resultsDiv = document.getElementById("results");
    resultsDiv.innerHTML = "";

    if (!input) {
        resultsDiv.innerHTML = "<p style='color:red;'>Please enter a domain name.</p>";
        return;
    }

    const hasTld = input.includes(".");
    const domainsToCheck = hasTld ? [input] : tlds.map(tld => `${input}${tld}`);

    for (const domain of domainsToCheck) {
        const isAvailable = await checkDomain(domain);

        const resultP = document.createElement("p");
        resultP.style.color = isAvailable ? "green" : "red";
        resultP.textContent = `${domain}: ${isAvailable ? "Available ✅" : "Taken ❌"}`;

        resultsDiv.appendChild(resultP);
    }
});
</script>
</body>
</html>