# Companyfacts, free: Domain WHOIS API

> For one domain: whether it is registered, its registrar, created, updated and expiry dates, status codes and nameservers (from the registry's RDAP server), plus its A, AAAA, MX, NS and TXT records, the email provider behind its MX, and whether it publishes SPF and DMARC.

Companyfacts's domain WHOIS API on its Free plan. It costs $0.00 per 1,000 domains. Companyfacts's docs list 6 of the 9 fields on our checklist: Registrar, Created on, Updated on, Expires on, Name servers, Statuses.
You get up to 300 calls a month.
We haven't run Companyfacts through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
This plan is free. We rank 316 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.
[Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt), [DomScan](https://datacircle.dev/domain-whois-apis/domscan/6-monthly-starter-post-v1-whois-bulk/llms.txt) and [WhoisFreaks](https://datacircle.dev/domain-whois-apis/whoisfreaks/200-monthly-monthly-subscription-150000-api-credits-post-v2-0-bulkwhois-live/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/companyfacts/free
- [Domain WHOIS API: the 13 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://companyfacts.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://companyfacts.dev/v1/domain`
- API key: not needed
- Its API docs: https://companyfacts.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: Companyfacts (https://companyfacts.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 67%
- Registrar: ✓
- Created on: ✓
- Updated on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓

## Price

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

## Charges

- Also pays for: from the same budget: /v1/companies endpoint · /v1/jobs endpoint · /v1/changes endpoint · /v1/read endpoint · /v1/email-check endpoint · /v1/tech-stack endpoint · /v1/vat endpoint · /v1/company-registry endpoint · /v1/papers endpoint · /v1/hacker-news endpoint · /v1/sec-financials endpoint · /v1/hiring-summary endpoint · /v1/federal-contracts endpoint · /v1/app-store endpoint · /v1/company endpoint · /v1/company-contacts endpoint · /v1/new-businesses endpoint · /v1/company-changes endpoint · /v1/company-search endpoint · /v1/x402-route endpoint

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: For one domain: whether it is registered, its registrar, created, updated and expiry dates, status codes and nameservers (from the registry's RDAP server), plus its A, AAAA, MX, NS and TXT records, the email provider behind its MX, and whether it publishes SPF and DMARC.

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- Enough for: 300 calls a month

## Rate limit

- Per day: 10
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /v1/domain

## About the plan

- Plan: Free
- Who can get it: anyone

## The 15 fields the plan's answer can hold

registered, registrar, created date, updated date, expiry date, status codes, nameservers, A records, AAAA records, MX records, NS records, TXT records, email provider, SPF, DMARC

## Companyfacts's plans (4)

- [Companyfacts, free](https://datacircle.dev/domain-whois-apis/companyfacts/free/llms.txt): $0.00 per 1,000, 67% complete
- [Companyfacts, pay as you go](https://datacircle.dev/domain-whois-apis/companyfacts/pay-as-you-go/llms.txt): $2.00 per 1,000, 67% complete
- [Companyfacts, $10 pack](https://datacircle.dev/domain-whois-apis/companyfacts/10-pack/llms.txt): $5.00 per 1,000, 67% complete
- [Companyfacts, $49 monthly](https://datacircle.dev/domain-whois-apis/companyfacts/49-monthly/llms.txt): $2.45 per 1,000, 67% complete

## Companyfacts's calls for this API (1)

- `GET /v1/domain`: [Companyfacts, free](https://datacircle.dev/domain-whois-apis/companyfacts/free/llms.txt)

## Companyfacts's APIs (7)

- [Companyfacts: business verification API pricing, 4 plans](https://datacircle.dev/business-verification-apis/companyfacts/free/llms.txt)
- [Companyfacts: company open jobs API pricing, 4 plans](https://datacircle.dev/company-open-job-apis/companyfacts/free/llms.txt)
- [Companyfacts: tech stack API pricing, 4 plans](https://datacircle.dev/company-technology-apis/companyfacts/free/llms.txt)
- [Companyfacts: domain WHOIS API pricing, 4 plans](https://datacircle.dev/domain-whois-apis/companyfacts/free/llms.txt)
- [Companyfacts: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/companyfacts/free/llms.txt)
- [Companyfacts: web scraping API pricing, 4 plans](https://datacircle.dev/web-scraping-apis/companyfacts/free/llms.txt)
- [Companyfacts: company enrichment API pricing, 4 plans, GET /v1/company](https://datacircle.dev/company-enrichment-apis/companyfacts/free-get-v1-company/llms.txt)
- [Companyfacts: company enrichment API pricing, 4 plans, GET /v1/company-contacts](https://datacircle.dev/company-enrichment-apis/companyfacts/free-get-v1-company-contacts/llms.txt)

## Companyfacts: domain WHOIS API alternatives

- [WhoisFreaks, $2,000 pack, 1,000,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/2000-pack-1000000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $2.00 per 1,000, 100% complete, live
- [JsonWhoisAPI, pay as you go, Any Additional](https://datacircle.dev/domain-whois-apis/jsonwhoisapi/pay-as-you-go-any-additional/llms.txt): $2.00 per 1,000, 89% complete
- [Whoxy, $10 pack](https://datacircle.dev/domain-whois-apis/whoxy/10-pack/llms.txt): $2.00 per 1,000, 78% complete, live
- [GetWhoisData, top-up](https://datacircle.dev/domain-whois-apis/getwhoisdata/top-up/llms.txt): $2.00 per 1,000, 67% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-05.

- https://companyfacts.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://companyfacts.dev/company-data-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://companyfacts.dev/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://companyfacts.dev/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://companyfacts.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://companyfacts.dev/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing