Host.io

API

Comprehensive Domains Data API for Developers

Overview

Host.io is a RESTful Domains Data API offering developers access to detailed domain intelligence: DNS records, WHOIS data, hosting provider info, traffic estimates, and domain history. Key endpoints include single domain lookup (/v1/domain/{domain}), bulk domain queries (/v1/bulk), reverse IP lookup (/v1/reverse/ip/{ip}), and DNS record retrieval (/v1/domain/{domain}/dns). Responses are in JSON format. Use cases: building SEO tools, cybersecurity platforms, domain research apps, developer utilities for validation, and competitive analysis tools for businesses.

Example Integration (JavaScript)

script.js JS


fetch('https://host.io')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful Architecture
JSON Response Format
Single & Bulk Domain Lookups
DNS & WHOIS Data
Reverse IP/DNS Queries
Hosting & Traffic Insights

Frequently Asked Questions

? Is Host.io free to use?

Host.io uses a freemium model—basic domain lookup endpoints are free with rate limits, while advanced features like bulk queries and detailed traffic data need a paid subscription.

? Does it require an API Key?

Yes, an API key is required for most endpoints to access authenticated requests, higher rate limits, and premium data sets.

? What is the response format?

All Host.io API responses are in JSON format, ensuring easy parsing and integration into developer applications.

Top Alternatives

DomainTools API Search Google

WhoisXML API Search Google

Clearbit Enrichment API Search Google

Tool Info

Pricing Freemium

Category Development

Platform Public API

Pros

⊕ Rich Domain Intelligence
⊕ Easy-to-Use Endpoints
⊕ Scalable Bulk Operations
⊕ Well-Documented API

Cons

⊖ Freemium Limits on Free Tier
⊖ Premium Features Require Subscription
⊖ No Historical WHOIS for Free Users