# ipv4.fr, free: Domain WHOIS API

> Look up domain registration details: registrar, creation date, expiry, name servers.

ipv4.fr's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. ipv4.fr's docs list 4 of the 9 fields on our checklist: Registrar, Created on, Expires on, Name servers.
In [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt), the best plan from ipv4.fr scores 62.2 out of 100. ipv4.fr ranks 8th of 18 providers.
This plan is free. We rank 349 plans for domain WHOIS APIs by price. Half the plans cost $1.495 per 1,000 domains or less. [See the best free domain WHOIS API plan.](https://datacircle.dev/best-domain-whois-api.txt)
[Searchwire's $10 pack](https://datacircle.dev/domain-whois-apis/searchwire/10-pack/llms.txt) is the cheapest paid plan per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price.
[Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt), [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt) and [DomScan](https://datacircle.dev/domain-whois-apis/domscan/49-monthly-scale-post-v1-whois-bulk/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/ipv4-fr/free
- [Domain WHOIS API: the 18 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://ipv4.fr/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.ipv4.fr/api/v1/whois/{domain}`
- API key: with the plan, on https://ipv4.fr/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Its API docs: https://ipv4.fr/docs.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: ipv4.fr (https://ipv4.fr?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 44%
- Registrar: ✓
- Created on: ✓
- Expires on: ✓
- Name servers: ✓

## Price

- $ per 1,000 domains: $0.00
- Per: call
- Billing: free

## Charges

- Also pays for: Create uptime monitor · from the same budget: IP address info · DNS lookup · SSL certificate check · TCP port check · HTTP response headers · Email validation · IP geolocation · IP blacklist check · Subnet calculator

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Look up domain registration details: registrar, creation date, expiry, name servers.

## Data

- Keep data: no limit
- Use data: Vous vous engagez à ne l'utiliser que sur des domaines, adresses et systèmes que vous êtes autorisé à analyser, et sans abus.

## Plan

- Pay: €0
- You get: 25 requests a day
- Enough for: 25 calls a day

## Rate limit

- Per day: 25
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.44 s

## The call

- You send: domain
- Method: GET
- Path: /api/v1/whois/{domain}

## About the plan

- Plan: Free
- Who can get it: anyone with an email address, no credit card required

## The 6 fields the plan's answer can hold

domain name, WHOIS server, registrar, creation date, expiration date, name servers

## ipv4.fr's plans (5)

- [ipv4.fr, free](https://datacircle.dev/domain-whois-apis/ipv4-fr/free/llms.txt): $0.00 per 1,000, 44% complete
- [ipv4.fr, pay as you go](https://datacircle.dev/domain-whois-apis/ipv4-fr/pay-as-you-go/llms.txt): $3.00 per 1,000, 44% complete
- [ipv4.fr, €5 pack](https://datacircle.dev/domain-whois-apis/ipv4-fr/5-pack/llms.txt): $1.125 per 1,000, 44% complete
- [ipv4.fr, €9 monthly](https://datacircle.dev/domain-whois-apis/ipv4-fr/9-monthly/llms.txt): $0.034 per 1,000, 44% complete
- [ipv4.fr, €49 monthly](https://datacircle.dev/domain-whois-apis/ipv4-fr/49-monthly/llms.txt): $0.018 per 1,000, 44% complete

## ipv4.fr's calls for this API (2)

- `GET /api/v1/whois/{domain}`: [ipv4.fr, free](https://datacircle.dev/domain-whois-apis/ipv4-fr/free/llms.txt)
- `GET /x402/v1/whois/{domain}`: [ipv4.fr, pay as you go](https://datacircle.dev/domain-whois-apis/ipv4-fr/pay-as-you-go/llms.txt)

## ipv4.fr's APIs (5)

- [ipv4.fr: domain WHOIS API pricing, 5 plans](https://datacircle.dev/domain-whois-apis/ipv4-fr/free/llms.txt)
- [ipv4.fr: email verification API pricing, 5 plans](https://datacircle.dev/validate-email-apis/ipv4-fr/free/llms.txt)
- [ipv4.fr: IP company lookup API pricing, 5 plans](https://datacircle.dev/ip-company-lookup-apis/ipv4-fr/free/llms.txt)
- [ipv4.fr: web scraping API pricing, 1 plan, Web page to Markdown (x402 pay-per-call)](https://datacircle.dev/web-scraping-apis/ipv4-fr/pay-as-you-go-x402-pay-per-call-get-x402-v1-markdown-web-page-to-markdown-x402-pay-per-call/llms.txt)
- [ipv4.fr: web scraping API pricing, 1 plan, Web page to Markdown (x402 pay-per-call), full](https://datacircle.dev/web-scraping-apis/ipv4-fr/pay-as-you-go-x402-pay-per-call-get-x402-v1-markdown-web-page-to-markdown-x402-pay-per-call-full/llms.txt)
- [ipv4.fr: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/ipv4-fr/pay-as-you-go/llms.txt)

## ipv4.fr: domain WHOIS API alternatives

- [C99.nl, $25 yearly](https://datacircle.dev/domain-whois-apis/c99-nl/25-yearly/llms.txt): $0.014 per 1,000, 0% complete
- [Enterno, ₽3,990 monthly](https://datacircle.dev/domain-whois-apis/enterno/3990-monthly/llms.txt): $0.016 per 1,000, 89% complete, live
- [WhoisJSON, $80 monthly](https://datacircle.dev/domain-whois-apis/whoisjson/80-monthly/llms.txt): $0.018 per 1,000, 89% complete, 3 hours
- [ApiZero, CNY 399 monthly](https://datacircle.dev/domain-whois-apis/apizero/cny-399-monthly/llms.txt): $0.02 per 1,000, 89% complete, 24 hours

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://ipv4.fr?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/cgv.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/docs.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/tools/whois?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://ipv4.fr/x402/v1?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing