Domainr
Domainr: A flexible domain discovery API with free tiers for suggestions and availability checks. Ranked #9 of 34 in Domain Search Tools by our editors (6.8/10); pricing: Free plan; best for apps needing flexible domain suggestion APIs.
At a glance
- Editor score6.8 / 10
- PricingFree plan
- Best forApps needing flexible domain suggestion APIs
- Free planYes
- Facts checked20 Sep 2026
Where it wins
- Algorithmic suggestions across thousands of top-level domains
- Precise registry and estimated DNS or aftermarket availability checks
- Filtering, Unicode support, and context-aware TLD suggestions
Where it doesn't
- Paid usage is billed through usage-based tiers
- No export options are provided
- Legacy Domainr API documentation is deprecated
Our verdict on Domainr
Domainr is a web-based domain discovery service and API for searching domain names and checking availability. It is designed for website builders, hosting providers, CMS and ecommerce platforms, registrars, branding agencies, security providers, and software-supply-chain teams. Its web and API access support algorithmic suggestions across a broad range of TLDs, along with availability information that can distinguish registry-level results from DNS and aftermarket signals.
The published structure separates Suggest, Status-Precise, and Status-Estimated services. Each has a free tier and a paid-usage tier. Suggest provides domain search suggestions; Status-Precise provides registry-level availability checks; and Status-Estimated covers DNS and aftermarket-level availability checks. The free tiers make it suitable for evaluating core discovery and status workflows, while paid usage is intended for applications that need continued or higher-volume access. The commercial API offering is Fastly's Domain Research API.
Domainr's strongest fit is product teams building domain search into another application rather than users seeking a standalone export workflow. Filtering by extension, registrar, location, or language, plus IDNA and Unicode support, helps shape searches for varied markets. Context-aware TLD suggestions and aftermarket offer information add depth beyond basic name lookup. It should suit platforms that need flexible domain discovery and multiple availability signals; teams that require export options or a conventional fixed-plan structure should consider alternatives with those capabilities.
Domainr pricing
All 6 Domainr plans and prices →
Domainr fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| TLD count | Not verified |
| Bulk search limit | Not verified |
| Domain variations | Advanced |
| Bulk upload | Not verified |
| Export options | None |
| API access | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Support | Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | domainr.com |
| Facts checked | 20 Sep 2026 |
Alternatives to Domainr
- Instant Domain SearchA broad free domain research suite with AI, bulk search, exports, and registrar comparisons.9.8
- DomainDiscoveryA broad free domain research toolkit for discovery, checking, and comparison.8.6
- DomaintorA broad domain search tool with AI suggestions, bulk checks, social checks, and API access.7.8
See all Domainr alternatives →
Used Domainr? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Domainr for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Domainr is listed in our Domain Search Tools directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/domainr/"><img src="https://www.itechguides.com/best/badge/domainr.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Guides on domain search tools
- How to Check If a Domain Is Available (& 10 Domain Search Tools)Aug 2026
- How to Check Domain Name Availability (Domain Search Tools)Aug 2026
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.
Last updated · How we research and update