Datacircle

FernTool pricing: domain WHOIS API

FernTool's siteThis page as plain textDomain WHOIS API in 2026: the best of 30+ providers comparedFernTool: domain WHOIS API alternatives

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100% complete: all 9 fields on our checklistSee the 9 fields
$0.00per 1,000 domainsIn our domain WHOIS API benchmark, this plan scores 83.1 out of 100. FernTool ranks 10th of 38 providers.We rank 589 plans for domain WHOIS APIs by price. Half the plans cost $1.67 or less per 1,000 domains. This plan and 29 others tie for the lowest price per 1,000 domains of the 589 plans. See the best free domain WHOIS API plan.thenetworkery, FluentEDI and DomainDetails are the best domain WHOIS API providers in the Datacircle benchmark.
Type a number to see the cheapest FernTool plan for that many domains. The table below then sorts the other plans by what each costs.
Plan: Free FernTool's only plan
Call: GET /api/whois/{query} FernTool's only call for this API
API: Domain WHOIS API one of FernTool's 2 APIs

About this item

  • Live. FernTool reads the domain's WHOIS record when you call the API.
  • All 9 fields on our checklist. Registrant, Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC, Abuse contact.
  • Nothing to pay. FernTool limits how many calls you get but gives no number.
  • One call. You send query to GET /api/whois/{query}. The call returns the domain's WHOIS record.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

FernTool: domain WHOIS API alternatives

FernTool alternatives: every domain WHOIS API provider ranked

We list other providers' plans closest to this plan in price per 1,000 domains. Each plan in the table gives live data.

This planFernTool, freethenetworkery, freeFluentEDI, freeEnterno, free, ScoutIPAddress.to, free
$ per 1,000 domains$0.00$0.00$0.00$0.00$0.00
Completeness100%100%67%89%89%
Billingfreefreefreefreefree
Pay$0$0$0₽0$0
Enough fornot publishednot publishedno limit200 calls a dayno limit
Freshnesslivelivelivelivelive
Who can get itanyoneanyone, to check systems they own, run or are authorised to testanyoneanyone with an accountanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

  1. ferntool.com/api
  2. ferntool.com/api/whois/example.com
  3. ferntool.com/openapi.json
  4. ferntool.com/terms
  5. ferntool.com/whois-lookup

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Registrant
  • Registrar
  • Created on
  • Updated on
  • Expires on
  • Name servers
  • Statuses
  • DNSSEC
  • Abuse contact
Score
Overall score83.1
Price score100
Accuracy score87
Cost to get started score100
Bundle score0
Performance score66
Price
$ per 1,000 domains$0.00
Percall
Billingfree
Charges
Also pays fornothing else
Not found
$ per 1,000 calls that find nothing$0.00
In their words
Their pitchRDAP WHOIS for a domain, IP or ASN
Data
Freshnesslive
Keep datano limit
Use dataDo not abuse the API (automated heavy use may be rate limited). Do not use the service for unlawful purposes.
Plan
Pay$0
Rate limit
Per second1
Batch1
Speed
Answerin the call
Median0.15 s
The call
You sendquery
MethodGET
Path/api/whois/{query}
About the plan
PlanFree
Who can get itanyone
The 15 fields the plan's answer can hold

domain, registered, registry handle, status, registrar, registrar IANA ID, created date, expires date, updated date, last RDAP database update, name servers, DNSSEC, RDAP URL, abuse email, registrant

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