Monthly visits
Not availableData as of Oct 24, 2026W
APIs & Data Processing
WhoisJSONAPI
Query WHOIS and DNS data and monitor changes to your domains
Wwhoisjsonapi.comNo site preview yet
What it does
- Query domains through the API for structured registration and DNS records, bulk lookups, and availability checks.
- Configure monitoring in the dashboard to review changes and receive email or webhook alerts.
Made for
Who is it for?
For developers and operators integrating domain lookups and change monitoring into their workflows.
Top alternatives
Compare features, prices, and free plans
| Tool | Price | What's free | Best for |
|---|---|---|---|
| WWhoisJSONAPI | From $49/mo | Check the official site for details | Query WHOIS and DNS data and monitor changes to your domains |
| RRealMarketAPI | From $4.99/mo | A free plan is available; the supplied evidence does not show its request allowance. | Access live market data through REST, WebSocket, and MCP |
| SStatic Forms | From $48/yr | The free plan includes 250 submissions per month, with no card requirement or trial deadline. | Collect static-site form submissions and send automatic replies |
| SSMSGo | Pay as you go, from $47.90 | Test with 3 free SMS without a credit card; the first top-up costs USD 47.90 for 1,000 SMS. | Send verification codes and notifications to Brazilian numbers via API |
Prices and free limits can change. Check the official site for the latest details.
The business behind the tool
What should you build next?
See what tools earn, how crowded the market is, and how long a solo build might take. Get a build, wait, or skip verdict, with lessons from successes and failures.
These are sample assessments, not final recommendations. We don't guess at missing revenue, traffic, or build times.
Monthly recurring revenue (USD)
$1,196Data as of Oct 24, 2026Launched
Nov 2021Data as of Oct 24, 2026Founders
1Data as of Oct 24, 2026Worth building? Look at the evidence
Higher is better (out of 5)Demand Estimate
Trends, anchor-relative interest, and growth are unavailable; 4 unique suggestion long tails. Demand is estimated only from suggestion count.
1/5
3/5
Room to compete
Not available
Edge over free options Estimate
The first 10 returned results for “domain whois api free” contain 6 confirmed sufficient free tools, deduplicated by domain: domainee.dev, oti-labs.com, whoisjson.com, demo-shop.domainee.dev, whois.ip-db.com, who-dat.as93.net; 3 tools remain unknown. In this category, 34/58 (58.6%) are free/freemium and 1 have unknown pricing; this Codex search sample is not a live Google ranking.
1/5
Can you build it solo? Estimate
Public domain protocols and DNS queries can be integrated, but normalized responses, query limits, and continuous monitoring need maintenance.
3/5
Finding customers Estimate
WHOIS API, DNS API, and domain change monitoring all have clear search entry points.
5/5
Willingness to pay Estimate
Developers using domain data in business systems have a reason to pay for a reliable API.
4/5
Higher scores mean better prospects. These are sample assessments, not investment advice.