DNS Lookup API — Query Any DNS Record Type

Description

Query any DNS record type — A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA, and more. Returns authoritative answers with TTL values and response metadata.

The fundamental building block for DNS analysis. Use it to verify record configuration, debug email delivery (MX records), check SPF/DKIM/DMARC (TXT records), or validate any DNS setup.

Use Cases

Verify DNS records are correctly configured
Debug email delivery issues by checking MX records
Validate SPF, DKIM, and DMARC records
Check CNAME and A record mappings

Parameters

Name	Type	Required	Description
`domain`	string	Yes	Domain name to look up
`record_type`	string	No	Record type (A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA, PTR). Default: A
`format`	string	No	Response format: json or markdown

Example Request

bash

curl -H 'X-API-Key: YOUR_KEY' \
  'https://api.example.com/dns/lookup?domain=example.com&record_type=MX'

python

import httpx

resp = httpx.get(
    "https://api.example.com/dns/lookup?domain=example.com&record_type=MX",
    headers={"X-API-Key": "YOUR_KEY"},
)
print(resp.json())

javascript

const resp = await fetch("https://api.example.com/dns/lookup?domain=example.com&record_type=MX", {
  headers: { "X-API-Key": "YOUR_KEY" },
});
const data = await resp.json();
console.log(data);

Example Response

json

{
  "domain": "example.com",
  "record_type": "MX",
  "records": [
    {"priority": 10, "value": "mail.example.com.", "ttl": 3600}
  ],
  "authoritative": true
}

DNS Lookup

Description

Use Cases

Parameters

Related Articles

MX Record Lookup: Troubleshooting Email Delivery

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