# Pyxmark, free: Domain WHOIS API

> Domain registration date, age, registrar (RDAP) and email-auth records (MX, SPF, DMARC), which are common fraud signals, plus first_archived: the date of the Wayback Machine's earliest snapshot (null if none, archive.status says unavailable if archive.org didn't answer).

Pyxmark's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. Pyxmark's docs list 2: Registrar, Created on.
In [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt), this plan scores 75.1 out of 100. Pyxmark ranks 12th 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/pyxmark/free
- [Domain WHOIS API in 2026: the best of 30+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://mcp.pyxmark.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://mcp.pyxmark.com/mcp`
- API key: not needed
- Its API docs: https://mcp.pyxmark.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: Pyxmark (https://pyxmark.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 22%
- Registrar: ✓
- Created on: ✓

## Score

- Overall score: 75.1
- Price score: 100
- Accuracy score: 58
- Cost to get started score: 100
- Bundle score: 86
- Performance score: 7

## Price

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

## Charges

- Also pays for: from the same budget: search_company · company_profile · screen_sanctions · check_exclusions · state_registry_link · due_diligence_report

## Not found

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

## In their words

- Their pitch: Domain registration date, age, registrar (RDAP) and email-auth records (MX, SPF, DMARC), which are common fraud signals, plus first_archived: the date of the Wayback Machine's earliest snapshot (null if none, archive.status says unavailable if archive.org didn't answer).

## Data

- Freshness: live
- Keep data: no limit
- Use data: Pyxmark is not a consumer reporting agency, and its results are not consumer reports under the Fair Credit Reporting Act (FCRA). Don't use Pyxmark, or anything it returns, to decide whether a person gets credit, a job, housing, insurance or a tenancy, or for any other purpose covered by the FCRA or similar state laws. [...] Single checks are free, up to 25 lookups a day per IP address. Every tool call counts as one lookup, and the limit resets at 00:00 UTC. We may also cap total free use per day. Don't try to get around the limits, overload the service, or resell or bulk-scrape results.

## 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: 1.34 s

## The call

- You send: method "tools/call", params.name "domain_age", params.arguments.domain
- Method: POST
- Path: /mcp

## About the plan

- Plan: Free
- Who can get it: anyone, with no sign-up or key

## The 9 fields the plan's answer can hold

registrar, created date, domain age, MX records, SPF record, DMARC record, first archived date, archive status, notes

## Pyxmark's plans (1)

- [Pyxmark, free](https://datacircle.dev/domain-whois-apis/pyxmark/free/llms.txt): $0.00 per 1,000, 22% complete, live

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

- `POST /mcp`: [Pyxmark, free](https://datacircle.dev/domain-whois-apis/pyxmark/free/llms.txt)

## Pyxmark's APIs (2)

- [Pyxmark: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/pyxmark/free/llms.txt)
- [Pyxmark: business verification API pricing, 1 plan, POST /mcp, company_profile](https://datacircle.dev/business-verification-apis/pyxmark/free-post-mcp-company-profile/llms.txt)
- [Pyxmark: business verification API pricing, 1 plan, POST /mcp, due_diligence_report](https://datacircle.dev/business-verification-apis/pyxmark/free-post-mcp-due-diligence-report/llms.txt)

## Pyxmark: 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://mcp.pyxmark.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://mcp.pyxmark.com/.well-known/mcp/server-card.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://pyxmark.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://pyxmark.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://pyxmark.com/methodology?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://pyxmark.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing