Who does it serve and what problem does it solve?
An API dedicated to WHOIS/RDAP/DNS data, with three public price tiers ($49/$129/$299) and domain change monitoring included, plus free online lookup tools to draw traffic
Target Audience
Developers and small companies working on domain tools, security, brand protection, and domain investing, who need stable structured WHOIS data
How does it charge?
subscriptionBasic $49/month or $490/year (100K credits); Premium $129/month or $1,290/year (500K credits); Enterprise $299/month or $2,990/year (2M credits); 14-day free trial with no credit card needed; annual billing saves about 17%
The above describes historical pricing. Check official website for current prices.
Where do users come from?
Traffic estimate (September 2026) shows direct about 39%, organic search about 46%, and referrals about 9%; the search keywords include "whois json api", "whois history", "domain checker", and "whois domain", with brand keywords making up about 60%. The website has free WHOIS/DNS lookup and domain age tools, plus a separate blog, blog.whoisjsonapi.com, whose recent months of posts are on WHOIS and AI agent topics. The founder's X account is called smallseo with about 240 followers, so he probably comes from an SEO background (speculation). Existing users subscribe monthly/annually and are held by the domain monitoring feature (monitoring keeps running).
Channel share, initial acquisition, and growth drivers are distinct; correlation does not imply proven causation.
What remains to be verified?
The following are research questions, not established market opportunities.
- What do target users actually pay for? Is there direct user feedback or paid interview evidence?
- Are these historical prices still active today? What are the conversion, retention, and fulfillment costs?
- Is the "Traffic estimate (September 2026) shows direct about 39%, organic search about 46%, and referrals about 9%; the search keywords include "whois json api", "whois history", "domain checker", and "whois domain", with brand keywords making up about 60%. The website has free WHOIS/DNS lookup and domain age tools, plus a separate blog, blog.whoisjsonapi.com, whose recent months of posts are on WHOIS and AI agent topics. The founder's X account is called smallseo with about 240 followers, so he probably comes from an SEO background (speculation). Existing users subscribe monthly/annually and are held by the domain monitoring feature (monitoring keeps running)." channel still viable? What resources do indie devs need to test it?
- Whose needs are competitors failing to meet? Find specific evidence before deciding on your angle.