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Domainr VS ZIP Code API

Compare Domainr VS ZIP Code API and see what are their differences

JackHamr
AI agents that spec, build, test, and ship code โ€” with voice chat, deep GitHub integration, and zero LLM markup. featured
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Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

Domainr logo Domainr

Domainr is the only ICANN-accredited domain status API provider.

ZIP Code API logo ZIP Code API

REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah
  • Domainr Landing page
    Landing page //
    2023-10-19

With direct, privileged access to domain registry data, the Domainr API instantly checks if a domain is availableโ€”with no false positives. In milliseconds, your customers will know if a domain is available, premium-priced, or for sale in any major aftermarket.

  • ZIP Code API Landing page
    Landing page //
    2026-05-21

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” centroid haversine and true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data โ€” not commodity or scraped sources
  • Canadian postal coverage โ€” most peers in this space are US-only
  • True spatial radius โ€” not just centroid haversine
  • 14 years of historical ACS depth via API โ€” unusual outside of raw Census downloads
  • One endpoint for all of North America โ€” no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free โ€” 2,500 lookups/day, no credit card required, no expiry
  • Developer โ€” $49/mo, 100K credits, 300/min
  • Professional โ€” $149/mo, 350K credits, 300/min
  • Business โ€” $499/mo, 1.5M credits, 600/min
  • Credit packs โ€” one-time, from 25K ($19) up to 2M ($799)

Resources

Domainr features and specs

  • User-Friendly Interface
    Domainr offers a clean, intuitive user interface that makes it easy to search for and discover domain names.
  • Wide Range of TLDs
    Domainr supports a vast array of top-level domains (TLDs), including many less common options, giving users more choices for unique domain names.
  • Real-Time Search Results
    The platform provides real-time domain availability results, which allows users to make quick and informed decisions.
  • Global Search
    Users can search for country-code TLDs (ccTLDs) as well as generic TLDs, making it easier to find appropriate domains for different geographic markets.
  • Integration with Registrars
    Domainr integrates with various domain registrars, enabling users to quickly and easily register their desired domain names.

Possible disadvantages of Domainr

  • Limited Built-In Registration
    Although Domainr integrates with registrars, it does not support in-app domain registration, requiring users to complete their purchase on a third-party site.
  • No Marketplace
    Domainr does not offer a domain marketplace for buying and selling pre-owned domains, which may limit options for users looking for premium domains.
  • Lack of Hosting Services
    The platform focuses solely on domain search and discovery, without offering web hosting or additional services that might be beneficial for some users.
  • Advanced Filtering Limitations
    Domainr offers basic search functionalities but lacks advanced search filters that could help users narrow down their domain choices more effectively.
  • Price Visibility
    The website does not always show the price of domains upfront, which can make it challenging for users to make cost-effective decisions quickly.

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Analysis of Domainr

Overall verdict

  • Domainr is a good service for anyone interested in finding creative, unique, or uncommon domain names quickly and efficiently. Its ease of use and comprehensive search capabilities make it a valuable tool in the domain name search process.

Why this product is good

  • Domainr is a tool designed to help users discover domain names across a variety of domain extensions, including those that are less common or new. It offers a simple, user-friendly interface and provides real-time availability information, which is useful for individuals or businesses looking to register a unique domain name. Additionally, Domainr integrates well with various domain registrars, making the process of acquiring a domain seamless.

Recommended for

    Domainr is recommended for entrepreneurs, startups, small business owners, marketers, and anyone else who is searching for a distinctive domain name that stands out. It is particularly useful for people looking to explore a wide range of domain extensions or aiming to secure a short or memorable domain name.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

Category Popularity

0-100% (relative to Domainr and ZIP Code API)

Domainr

ZIP Code API

Domain Names
100 100%
Domain Names
0% 0
Zip Lookup
0 0%
Zip Lookup
100% 100
Web Hosting
100 100%
Web Hosting
0% 0
APIs
0 0%
APIs
100% 100

User comments

Share your experience with using Domainr and ZIP Code API. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, Domainr seems to be more popular. It has been mentiond 11 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Domainr mentions (11)

View more

ZIP Code API mentions (0)

We have not tracked any mentions of ZIP Code API yet. Tracking of ZIP Code API recommendations started around May 2026.

What are some alternatives?

When comparing Domainr and ZIP Code API, you can also consider the following products

Lean Domain Search - Find a Great Domain Name w/ twitter handle availability

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Instant Domain Search - Search domain names instantly by showing results as you type.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

DomainHole - DomainHole has the tools to allow you to find a great domain name.

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

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