What DNS record types does the API support?

The Advanced DNS Lookup API supports a wide range of DNS record types including A, AAAA, TXT, CNAME, MX, NS, SOA, SRV, PTR, HINFO, MINFO, RP, AFSDB, and more. If no specific type is requested, the API will return results for A, AAAA, MX, TXT, SOA, and NS records by default.

Can I perform reverse DNS lookups with this API?

Yes, the API supports reverse DNS lookups using the ip parameter. Simply provide an IP address to the endpoint, and the API will return the PTR records associated with that IP. If both ip and name parameters are provided, the API will prioritize the reverse lookup.

What happens if I don't specify a record type?

If you don't specify a record type using the type parameter, the API will automatically perform queries for the default record types: A, AAAA, MX, TXT, SOA, and NS. The results will be grouped by record type in the response.

How fast are the API response times?

Our DNS Lookup API is optimized for speed with a global edge network that delivers typical response times under 100ms. The API leverages strategically distributed DNS resolvers across 50+ locations worldwide to minimize latency. For frequently queried domains, we implement intelligent caching strategies that can reduce response times to under 50ms. The actual response time depends on factors like the record type queried, the authoritative nameserver location, and network conditions, but our infrastructure ensures consistently fast performance for production applications.

Can I use this API for bulk domain lookups?

Yes, the DNS Lookup API is well-suited for bulk domain lookups. While each API call processes a single domain, you can implement parallel requests to handle multiple domains efficiently. For bulk operations, we recommend using connection pooling and implementing exponential backoff for rate limiting. Each lookup costs 5 credits: the Free plan's 1,000 monthly credits cover about 200 lookups, Starter ($29.99/month) covers 10,000 and Pro ($99.99/month) covers 50,000. For optimal performance with bulk lookups, batch your requests in groups of 50-100 concurrent queries, implement retry logic for failed requests, and monitor your rate limit headers to avoid throttling.

Is the API suitable for production monitoring systems?

Absolutely. The DNS Lookup API is designed for production-grade monitoring systems with a 99.9% uptime SLA and enterprise reliability. Many DevOps teams use our API for continuous DNS monitoring, health checks, and infrastructure validation. The API integrates seamlessly with popular monitoring platforms like Datadog, New Relic, and Prometheus through webhooks and custom exporters. You can set up automated alerting by comparing DNS responses against expected values and triggering notifications when discrepancies are detected. The structured JSON responses make it easy to parse and analyze DNS records programmatically, and the fast response times ensure your monitoring checks complete quickly without impacting system performance.

Advanced DNS queries for developers and network administrators

DNS Lookup API

The Advanced DNS Lookup API is a powerful tool designed for developers and network administrators to query DNS records with ease. It supports both forward lookups (by domain name) and reverse lookups (by IP address).

The API handles a wide range of DNS record types, making it ideal for integration into web applications, network monitoring tools, and security platforms with enterprise-grade reliability.

Get a free API key Read the docs

Free tier included, no credit card required. One key works across every API.

Free calls / month: 200
Record Types: 15+
Query Speed: <100ms
Uptime SLA: 99.9%

Get your free API key

200 free calls on the free plan

Key features

Forward DNS lookups by domain name
Reverse DNS lookups by IP address
Support for A, AAAA, MX, TXT, SOA, NS, PTR, SRV records
Structured JSON responses with TTL values
Bulk lookup capabilities for multiple domains
Global DNS server network for fast resolution
Rate limiting protection and error handling

Built for

Network monitoring and diagnostics
Domain validation and verification
Security threat intelligence
Email deliverability analysis
Website migration planning
Infrastructure auditing
DNS configuration troubleshooting
Brand protection monitoring

MCP · for your agent

Hand the DNS Lookup API to your agent

Connect Claude, Cursor or any MCP client once, then ask in plain words. Your agent finds this API, reads its docs and makes the call: 5 credits per call, the same as REST, from your team's balance.

Connect your agent

Confirm a DNS migration

“We just moved example.com to a new host. Check the A record points at the new IP and the MX records survived.”

list_apis · get_api_docsfree

api_request GET /dns-lookup/v1/check?name=example.com&type=A 5 cr

Current A and MX records with TTLs, checked against the new host's IP.

Check a verification record

“Has the TXT record for our Google Workspace domain verification on example.com gone live yet?”

list_apis · get_api_docsfree

api_request GET /dns-lookup/v1/check?name=example.com&type=TXT 5 cr

Every TXT record on the domain, with the verification string found or still missing.

Learn which email provider accounts use

“We're pitching a Microsoft 365 add-on. Which email providers do our 30 target accounts use? Start with contoso.com.”

list_apis · get_api_docsfree

api_request GET /dns-lookup/v1/check?name=contoso.com&type=MX 5 cr

MX hosts per domain, mapped to providers like Google Workspace or Microsoft 365.

$ claude mcp add --transport http apicodex https://mcp.apicodex.io

Illustrative asks; the calls and prices are real. Claude, Cursor, VS Code and Windsurf setup: mcp.apicodex.io

Try it

Build the request for your data

Edit the parameters below and see the exact request and curl command you'd send. No key required to preview.

GET /dns-lookup/v1/check

Open in Playground

Parameters

name

type

Request · HTTP

GET /dns-lookup/v1/check?name=example.com&type=A HTTP/1.1
Host: api.apicodex.io
X-Api-Key: YOUR_API_KEY

Response · JSON 200 OK

{
"name": "example.com",
"records": {
  "A": [
    {
      "name": "example.com",
      "TTL": 300,
      "data": "93.184.216.34"
    }
  ]
}
}

Run it with your key

Documentation

DNS Lookup API Documentation

The Advanced DNS Lookup API is a powerful tool designed for developers and network administrators to query DNS records with ease. The API supports a wide range of DNS record types—including A, AAAA, MX, TXT, SOA, NS, and many others—and now also supports reverse DNS lookups using an IP address.

Base URL

url

https://api.apicodex.io/dns-lookup

Authentication

Authenticate every request with your API key: send it in an X-Api-Key header, or pass it as an ?apikey= query parameter.

headers

{
"X-Api-Key": "YOUR_API_KEY"
}

Request and response

Illustrative values. Confirm current endpoint behavior, quotas, and data freshness in the API documentation before production use.

request · http

GET /dns-lookup/v1/check?name=example.com&type=A HTTP/1.1
Host: api.apicodex.io
X-Api-Key: YOUR_API_KEY

response · json

{
"name": "example.com",
"records": {
  "A": [
    {
      "name": "example.com",
      "TTL": 300,
      "data": "93.184.216.34"
    }
  ]
}
}

Code examples

JavaScript/Node.js

const axios = require('axios');

const options = {
  method: 'GET',
  url: 'https://api.apicodex.io/dns-lookup/v1/check',
  params: {name: 'example.com', type: 'A'},
  headers: {
    'X-Api-Key': 'YOUR_API_KEY'
  }
};

try {
  const response = await axios.request(options);
  console.log(response.data);
} catch (error) {
  console.error(error);
}

Python

import requests

url = "https://api.apicodex.io/dns-lookup/v1/check"

querystring = {"name":"example.com","type":"A"}

headers = {
    "X-Api-Key": "YOUR_API_KEY"
}

response = requests.get(url, headers=headers, params=querystring)

print(response.json())

cURL

curl --request GET \
  --url 'https://api.apicodex.io/dns-lookup/v1/check?name=example.com&type=A' \
  --header 'X-Api-Key: YOUR_API_KEY'

Pricing

DNS Lookup API Pricing

This API costs 5 credits per request. Credits are shared across every API on your plan.

Estimate your monthly cost

Drag the slider to match your expected request volume. We'll recommend the cheapest plan that covers it.

Requests per month 10,000

Recommended plan

Starter

$29.99 /month

Credits used

Credits included

Cost per 1K requests

Choose Starter

Free

1,000 credits · ~200 requests/mo · 2 rps

All APIs included
No credit card required
Full documentation and examples
MCP server for your AI agents
Up to 5 active API keys

Start for free

Starter

Popular

$29.99 /month

50,000 credits · ~10,000 requests/mo · 10 rps

All APIs included
Email support
Usage dashboard and analytics
MCP server for your AI agents
Up to 5 active API keys

Start with Starter

Pro

$99.99 /month

250,000 credits · ~50,000 requests/mo · 25 rps

All APIs included
Priority support
MCP server for your AI agents
Up to 5 active API keys

Start with Pro

FAQ

DNS Lookup API

Key features

Built for

Hand the DNS Lookup API to your agent

Confirm a DNS migration

Check a verification record

Learn which email provider accounts use

Build the request for your data

DNS Lookup API Documentation

Base URL

Authentication

Request and response

Code examples

DNS Lookup API Pricing

Free

Starter

Pro

Need a different plan?

Frequently asked questions

Related APIs