DNS Lookup

Resolve DNS records for any hostname. Returns A, AAAA, CNAME, MX, TXT, and NS records. Optionally filter to a specific record type.

GET /api/dns-lookup

Try it

{
  "ok": true,
  "hostname": "example.com",
  "normalizedHostname": "example.com",
  "records": {
    "A": ["93.184.216.34"],
    "AAAA": [],
    "CNAME": [],
    "MX": [],
    "TXT": [],
    "NS": ["a.iana-servers.net", "b.iana-servers.net"]
  },
  "meta": {
    "lookupTimeMs": 42,
    "cached": false,
    "rateLimitedScope": "global"
  }
}

What it returns

• •ok - whether the lookup succeeded
• •hostname - the input hostname
• •normalizedHostname - the cleaned, lowercase hostname
• •records - DNS records grouped by type (A, AAAA, CNAME, MX, TXT, NS)
• •meta.lookupTimeMs - time taken for the DNS resolution
• •meta.cached - whether the result came from cache

Use cases

• •Verify MX records when debugging email delivery issues
• •Check if a domain has a CNAME pointing to the right place
• •Confirm DNS propagation after changing nameservers
• •Validate that a new domain has A records set up
• •Automate domain health checks in your CI pipeline

Quick API examples

curl "https://tinyutils.dev/api/dns-lookup?domain=example.com"

curl "https://tinyutils.dev/api/dns-lookup?domain=example.com&type=MX"

const res = await fetch(
  "https://tinyutils.dev/api/dns-lookup?domain=example.com"
);
const data = await res.json();
console.log(data.records.A, data.records.MX);

Batch endpoint

Look up to 10 domains in a single request using POST /api/dns-lookup/batch.

curl -X POST "https://tinyutils.dev/api/dns-lookup/batch" \
  -H "Content-Type: application/json" \
  -d '{"domains":["example.com","openai.com"]}'