WhoisJSONAPI: $2.8K in 30 days, Stripe-verified

WhoisJSONAPI provides domain data APIs, availability checks, bulk WHOIS and domain monitoring for developers and companies. Its $2.8K in the last 30 days is verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026.

What it actually sells

WhoisJSONAPI sells WHOIS/RDAP and DNS APIs, domain availability checks, bulk WHOIS and domain monitoring. Its stated audience is “Developers and companies working with domain, security, risk, operations, and developer workflows.”

Customers can query structured registration data, fetch live DNS answers and submit up to 20 domains in one bulk WHOIS request. They can also check domain availability, send monitoring alerts and trigger applications through signed webhooks.

How it charges

The Basic plan costs $49/month and is presented for solo entrepreneurs and small startups. Plans include a 7-day free trial without a credit card, while Enterprise includes 2,000,000 API credits per month.

Month by month

Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.

Month	Revenue (USD)
2025-10	$1,428
2025-11	$1,648
2025-12	$1,398
2026-01	$1,423
2026-02	$1,548
2026-03	$1,959
2026-04	$1,234
2026-05	$1,109
2026-06	$1,059
2026-07	$1,059
2026-08	$1,009
2026-09	$2,758

Where customers come from

The site provides links to API documentation, WHOIS API documentation and DNS API documentation. These visible product surfaces give developers direct access to technical information for the WHOIS/RDAP and DNS APIs.

What stands out

The product combines structured registration data with live DNS answers grouped by record type for A, AAAA, MX, NS, TXT, CNAME, SOA and CAA. Plans can check over 500 million domain names, and Domain Monitoring is a signed-in, owner-scoped Dashboard product.

From the official site

Built for Domain, Security, and Developer Workflows

Fetch live DNS answers grouped by type for A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA.

Domain Monitoring is a signed-in, owner-scoped Dashboard product

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

WhoisJSONAPI's $2.8K in the last 30 days is higher than 85% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Security” category (96 projects) it is higher than 82% (category median $254). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

My view: demand would come from developers and companies with domain, security, risk, operations and developer workflows. The buyer needs structured registration data, live DNS answers, availability checks, batch queries, alerts and webhook triggers within product workflows.

My view: distribution would start with documentation, free trials and direct product pages aimed at developers. Building it requires dependable domain data, DNS responses, webhook handling, monitoring and customer support. Regulation, support load and competition are the main operational challenges in this category.

Verdict: Needs real work.

One thing to take from it

WhoisJSONAPI presents several related domain-data jobs as one product: WHOIS/RDAP queries, DNS answers, availability checks, bulk requests and monitoring. Its visible conversion surfaces are a $49/month Basic plan, free trials, API documentation and a signed-in monitoring Dashboard.

Sources

WhoisJSONAPI official website, fetched October 1, 2026
WhoisJSONAPI pricing page, fetched October 1, 2026
TrustMRR: revenue verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure