# DomChecker, free: Domain WHOIS API

> Free domain lookups straight from registries: availability, WHOIS (registrar, dates, release date), domain age, DNS records and IP/network owner.

DomChecker's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. DomChecker's docs list 7: Registrant, Registrar, Created on, Updated on, Expires on, Name servers, Statuses.
DomChecker limits how many calls you get but gives no number.
In [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt), this plan scores 72.5 out of 100. DomChecker ranks 15th 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.](https://datacircle.dev/best-domain-whois-api.txt)
[thenetworkery](https://datacircle.dev/domain-whois-apis/thenetworkery/free/llms.txt), [FluentEDI](https://datacircle.dev/domain-whois-apis/fluentedi/free/llms.txt) and [DomainDetails](https://datacircle.dev/domain-whois-apis/domaindetails/9-99-monthly-alerts-get-api-rdap/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/domchecker/free
- [Domain WHOIS API in 2026: the best of 30+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://domchecker.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://domchecker.ru/api/v1/whois.php`
- API key: not needed
- Its API docs: https://domchecker.ru/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: DomChecker (https://domchecker.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 78%
- Registrant: ✓
- Registrar: ✓
- Created on: ✓
- Updated on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓

## Score

- Overall score: 72.5
- Price score: 100
- Accuracy score: 69
- Cost to get started score: 100
- Bundle score: 0
- Performance score: 23

## Price

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

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Free domain lookups straight from registries: availability, WHOIS (registrar, dates, release date), domain age, DNS records and IP/network owner.

## Data

- Freshness: 1 hour
- Keep data: no limit
- Use data: При использовании сервиса запрещается: Использовать автоматизированные скрипты, ботов или парсеры для массового сбора данных без нашего письменного разрешения, Пытаться нарушить работу сайта, создавать чрезмерную нагрузку на серверы, Использовать сервис для незаконной деятельности, включая киберсквоттинг.

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.61 s

## The call

- You send: domain
- Method: GET
- Path: /whois.php

## About the plan

- Plan: Free
- Who can get it: anyone, with no account or API key

## The 19 fields the plan's answer can hold

domain, domain display name, availability status, registrar, created date, expires date, release date, updated date, domain age, days to expiry, name servers, statuses, registrant, registrant hidden, admin contact, lookup source, checked at, cached, raw WHOIS

## DomChecker's plans (1)

- [DomChecker, free](https://datacircle.dev/domain-whois-apis/domchecker/free/llms.txt): $0.00 per 1,000, 78% complete, 1 hour

## DomChecker's calls (1)

- `GET /whois.php`: [DomChecker, free](https://datacircle.dev/domain-whois-apis/domchecker/free/llms.txt)

## DomChecker's APIs (1)

- [DomChecker: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/domchecker/free/llms.txt)

## DomChecker: domain WHOIS API alternatives

- [thenetworkery, free](https://datacircle.dev/domain-whois-apis/thenetworkery/free/llms.txt): $0.00 per 1,000, 100% complete, live
- [FluentEDI, free](https://datacircle.dev/domain-whois-apis/fluentedi/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [Enterno, free, Scout](https://datacircle.dev/domain-whois-apis/enterno/free-scout/llms.txt): $0.00 per 1,000, 89% complete, live
- [IPAddress.to, free](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt): $0.00 per 1,000, 89% complete, live

## 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.

- https://domchecker.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://domchecker.ru/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://domchecker.ru/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://domchecker.ru/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing