Domain Rating Checker Ranking: Overview
Domain rating checker APIs allow you to programmatically check Domain Rating (DR), Domain Authority (DA), and other authority metrics for any website. These APIs are essential for building SEO tools, automating link analysis, creating domain comparison tools, and integrating authority metrics into your applications.
The best domain rating checker APIs provide accurate, up-to-date data, comprehensive documentation, reliable uptime, and reasonable pricing. This guide ranks the top domain rating checker APIs based on data accuracy, API quality, features, pricing, and developer experience.
Whether you're building an SEO tool, creating a link building platform, or need to check domain ratings at scale, this ranking will help you choose the best API for your specific use case.
Best Domain Rating Checker APIs
1. Ahrefs API - Best for Domain Rating (DR)
URL: ahrefs.com/api
Rating: ⭐⭐⭐⭐⭐ (5/5)
Ahrefs API is the #1 choice for checking Domain Rating because Ahrefs created the DR metric. Their API provides the most accurate and up-to-date DR scores, along with comprehensive backlink data, referring domains, organic keywords, and more.
Key Features:
- Official source of Domain Rating (DR) data
- Comprehensive backlink and referring domain data
- Batch requests support (up to 100 domains)
- Excellent documentation with code examples
- RESTful API with JSON responses
- Historical data and trends available
Pricing: Starts at $99/month for Lite plan. Free tier available with limited requests.
Best For: SEO tools, link building platforms, domain analysis tools that need accurate DR data.
2. Moz API - Best for Domain Authority (DA)
URL: moz.com/products/api
Rating: ⭐⭐⭐⭐ (4/5)
Moz API is the best choice for Domain Authority (DA) data, as Moz created the DA metric. While different from DR, DA is widely used in SEO and provides similar insights into domain authority. Moz API offers comprehensive link data and authority metrics.
Key Features:
- Official source of Domain Authority (DA) data
- Page Authority (PA) and Spam Score metrics
- Link data and anchor text analysis
- Free tier available with limited requests
- Well-documented REST API
- Batch URL analysis support
Pricing: Starts at $99/month. Free tier with 10,000 rows/month.
Best For: Tools that need DA data, SEO platforms, content analysis tools.
3. SEMrush API - Best for Authority Score
URL: semrush.com/api
Rating: ⭐⭐⭐⭐ (4/5)
SEMrush API provides Authority Score, a metric similar to DR and DA. While not as widely used as DR or DA, Authority Score is valuable for SEO analysis. SEMrush API also offers comprehensive keyword, backlink, and traffic data.
Key Features:
- Authority Score metric (0-100 scale)
- Comprehensive keyword and backlink data
- Traffic analytics and competitor analysis
- Bulk domain analysis support
- Free tier with limited requests
- RESTful API with good documentation
Pricing: Starts at $119.95/month. Free tier available.
Best For: Comprehensive SEO tools, competitor analysis platforms, keyword research tools.
4. Majestic API - Best for Trust Flow
URL: majestic.com/api
Rating: ⭐⭐⭐⭐ (4/5)
Majestic API provides Trust Flow and Citation Flow metrics, which measure link quality based on trusted seed sites. While different from DR/DA, these metrics are valuable for assessing domain authority and link quality. Majestic has one of the largest backlink databases.
Key Features:
- Trust Flow and Citation Flow metrics
- Massive backlink database (trillions of links)
- Historical backlink data
- Bulk analysis capabilities
- RESTful API with comprehensive endpoints
- Good documentation and support
Pricing: Starts at $49.99/month. Free tier with limited features.
Best For: Link analysis tools, trust metric analysis, comprehensive backlink research.
5. DataForSEO API - Best for Multi-Metric Aggregation
URL: dataforseo.com/api
Rating: ⭐⭐⭐⭐ (4/5)
DataForSEO API aggregates data from multiple sources, providing DR, DA, and other metrics in a single API. This is valuable if you need multiple authority metrics without integrating multiple APIs. They provide data from Ahrefs, Moz, and other sources.
Key Features:
- Aggregates DR, DA, and other metrics
- Single API for multiple data sources
- Comprehensive SEO data (backlinks, keywords, traffic)
- Pay-as-you-go pricing model
- RESTful API with good documentation
- Bulk requests support
Pricing: Pay-as-you-go model, starts at $0.01 per request. No monthly minimum.
Best For: Tools that need multiple metrics, cost-effective solutions, flexible pricing needs.
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Domain Rating Checker API Comparison
Use this comparison table to quickly compare the top domain rating checker APIs:
Key Features to Look For in Domain Rating Checker APIs
When choosing a domain rating checker API, consider these essential features:
Data Accuracy: The API should provide accurate, up-to-date domain rating data. Ahrefs API is most accurate for DR because they created the metric. For DA, Moz API is most accurate. Choose the API that provides the metric you need from its original source.
API Reliability: Look for APIs with high uptime (99.9%+), fast response times, and reliable infrastructure. Check API status pages and reviews to assess reliability. Downtime can break your application, so reliability is crucial.
Documentation Quality: Good documentation is essential for developer productivity. Look for APIs with comprehensive docs, code examples in multiple languages, clear endpoint descriptions, and active developer communities.
Batch Request Support: If you need to check multiple domains, batch request support is essential. It's more efficient and cost-effective than individual API calls. Check each API's batch limits and pricing.
Rate Limits: Understand the API's rate limits and whether they meet your needs. Some APIs have strict rate limits that may not work for high-volume applications. Check if they offer higher-tier plans with increased limits.
Pricing Structure: Compare pricing models—monthly subscriptions vs. pay-as-you-go. Consider your usage patterns and choose the model that best fits your needs. Free tiers are great for testing, but production use typically requires paid plans.
Additional Data: Beyond domain rating, consider what other data the API provides. Backlink counts, referring domains, organic keywords, and traffic data can be valuable additions. More comprehensive APIs may be worth the extra cost.
Common Use Cases for Domain Rating Checker APIs
Domain rating checker APIs are used in various applications and tools:
SEO Tools: Building SEO analysis tools that display DR/DA scores for analyzed websites. These tools help users understand domain authority and make informed SEO decisions.
Link Building Platforms: Creating platforms that help users find high-DR link opportunities. APIs enable real-time DR checks for potential link targets, helping users prioritize their outreach efforts.
Domain Comparison Tools: Building tools that compare multiple domains' authority metrics side-by-side. Useful for competitive analysis and benchmarking.
Automated Reporting: Generating reports that include domain rating data for clients or internal use. APIs enable automated report generation with up-to-date authority metrics.
Content Analysis Tools: Analyzing content performance based on domain authority. Tools can correlate content success with publisher DR scores.
Directory Platforms: Building directories that display DR scores for listed websites. This helps users identify high-authority directories and prioritize submissions.
Domain Rating Checker Ranking FAQ
What is the best domain rating checker API?
Ahrefs API is the best domain rating checker API because it's the original source of Domain Rating data. Ahrefs created the DR metric, so their API provides the most accurate and up-to-date DR scores. Other excellent options include Moz API (for Domain Authority), SEMrush API (for Authority Score), and Majestic API (for Trust Flow). The best choice depends on which metric you need and your specific use case.
How do I check domain rating using an API?
To check domain rating using an API, you need to: (1) Sign up for an API account with your chosen provider (Ahrefs, Moz, SEMrush, etc.), (2) Get your API key/credentials, (3) Make HTTP requests to the API endpoint with the domain you want to check, (4) Parse the JSON response to extract the DR score. Most APIs provide comprehensive documentation with code examples in multiple programming languages.
Is there a free domain rating checker API?
Most domain rating checker APIs require paid subscriptions, but some offer limited free tiers. Ahrefs offers a free API tier with limited requests. Moz provides a free API tier for basic queries. SEMrush has a free API tier with restrictions. For production use, you'll typically need a paid plan. Free alternatives include using Ahrefs' free web tools or browser extensions, though these don't provide API access.
What's the difference between Domain Rating and Domain Authority APIs?
Domain Rating (DR) is Ahrefs' metric, while Domain Authority (DA) is Moz's metric. Both measure backlink profile strength on 0-100 scales but use different algorithms. Ahrefs API provides DR data, while Moz API provides DA data. If you need DR specifically, use Ahrefs API. If you need DA, use Moz API. Some tools provide both metrics, but they come from different sources and aren't directly comparable.
Can I check multiple domain ratings at once with an API?
Yes, most domain rating checker APIs support batch requests to check multiple domains at once. Ahrefs API allows batch requests for up to 100 domains per call. Moz API supports batch queries. SEMrush API also supports bulk domain checks. Batch requests are more efficient and cost-effective than individual API calls. Check each API's documentation for specific batch limits and pricing.
What data does a domain rating checker API provide?
Domain rating checker APIs typically provide: the DR/DA score, referring domains count, backlinks count, organic traffic estimates, top keywords, top pages, and sometimes historical data. Ahrefs API provides comprehensive data including DR, UR, backlinks, referring domains, organic keywords, and more. The exact data varies by API provider, so check their documentation for specific fields available.