# SecurityTrails, $500 monthly: Domain WHOIS API

> Returns the current WHOIS data about a given domain with the stats merged together

SecurityTrails's Professional plan for the domain WHOIS API costs $25.00 per 1,000 domains. We check each provider's docs for 9 fields. SecurityTrails's docs list 6: Registrar, Created on, Updated on, Expires on, Name servers, Statuses.
We haven't run SecurityTrails through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 400 plans for domain WHOIS APIs by price. Half the plans cost $1.50 or less per 1,000 domains. This plan costs less per 1,000 domains than 3% of the 400 plans.
[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. [C99.nl's $25 yearly plan](https://datacircle.dev/domain-whois-apis/c99-nl/25-yearly/llms.txt) costs the least for 10,000 domains a month: $2.08.
[Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt), [IPAddress.to](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt) and [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/securitytrails/500-monthly
- [Domain WHOIS API: the 19 best of 80+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://securitytrails.com/corp/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.securitytrails.com/v1/domain/{hostname}/whois`
- API key: with the plan, on https://securitytrails.com/corp/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Its API docs: https://docs.securitytrails.com/reference/get-whois-old-1?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: SecurityTrails (https://securitytrails.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-08

## In the answer

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

## Price

- $ per 1,000 domains: $25.00
- Per: call
- Billing: monthly
- $ a month: $500

## Charges

- Also pays for: from the same budget: Get Domain · DNS history by record type · List Subdomains · WHOIS history by domain · Search Domain (DSL) · Find associated domains · Get IP Whois · Search IPs (DSL)

## In their words

- Their pitch: Returns the current WHOIS data about a given domain with the stats merged together

## Data

- Keep data: no limit
- Use data: Customer’s access and use of the Service, its Output, and Documentation shall be limited to solely its own internal security purposes [...] Customer shall not (and shall not allow any third party to): [...] (ii) encumber, transfer, distribute, sell, disclose, sublicense, assign, provide, lease, lend, use for timesharing or service bureau purposes, or use for the benefit of any third party (including to or for any Customer affiliate or subsidiary), or otherwise use (except as expressly permitted herein) any part of the Service, Output, or Documentation [...] (iii) copy, modify, adapt, translate, incorporate into or with other software, or create a derivative work of any part of the Service, Output, or Documentation, [...] (vi) use any product data as a training set for machine learning or training of artificial intelligence, (vii) use any robot, spider, scraper or other automated means to access the Service, or engage in any scraping, data-mining, harvesting, screen-scraping, data aggregating or indexing of the Service, (viii) perform, or publish or otherwise disclose the results of, any benchmarking, availability or performance testing or analyses of the Service or Customer’s use thereof, [...] (x) publicize any Output or make Output publicly available in any way, [...] (xii) use, transmit, sell, or license to anyone for use of the Services or any Output for marketing, advertising (including targeting for the same), loyalty programs, customer selection, acquisition, or retention, or similar purposes [...] Customer is prohibited from reselling or otherwise distributing or disclosing Recorded Future Output, delivered directly or as a derived product or service, to any third parties except for limited disclosure to Customer’s Representatives solely in connection with Customer’s internal security purposes.

## Plan

- Pay: $500
- You get: 20,000 requests a month
- Enough for: 20,000 calls a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

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

## About the plan

- Plan: Professional
- Who can get it: anyone

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

domain, registrar, registration date, update date, expiration date, name servers, domain status, contact email, contact type, contact country, contact country code, contact state, contact name, contact name count, endpoint

## SecurityTrails's plans (3)

- [SecurityTrails, $500 monthly](https://datacircle.dev/domain-whois-apis/securitytrails/500-monthly/llms.txt): $25.00 per 1,000, 67% complete
- [SecurityTrails, $1,500 monthly](https://datacircle.dev/domain-whois-apis/securitytrails/1500-monthly/llms.txt): $23.077 per 1,000, 67% complete
- [SecurityTrails, contact us](https://datacircle.dev/domain-whois-apis/securitytrails/contact-us/llms.txt): 67% complete

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

- `GET /domain/{hostname}/whois`: [SecurityTrails, $500 monthly](https://datacircle.dev/domain-whois-apis/securitytrails/500-monthly/llms.txt)

## SecurityTrails's APIs (2)

- [SecurityTrails: domain WHOIS API pricing, 3 plans](https://datacircle.dev/domain-whois-apis/securitytrails/500-monthly/llms.txt)
- [SecurityTrails: IP company lookup API pricing, 3 plans](https://datacircle.dev/ip-company-lookup-apis/securitytrails/500-monthly/llms.txt)

## SecurityTrails: domain WHOIS API alternatives

- [Cedula 360, COP 899,000 monthly](https://datacircle.dev/domain-whois-apis/cedula-360/cop-899000-monthly/llms.txt): $23.63 per 1,000, 33% complete
- [ViewDNS.info, $319 yearly](https://datacircle.dev/domain-whois-apis/viewdns-info/319-yearly/llms.txt): $26.583 per 1,000, 89% complete, live
- [SupaMarketers, $149 monthly](https://datacircle.dev/domain-whois-apis/supamarketers/149-monthly/llms.txt): $29.80 per 1,000, 0% complete
- [Osint, $29.99 pack](https://datacircle.dev/domain-whois-apis/osint/29-99-pack/llms.txt): $29.99 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 2026-11-08.

- https://docs.securitytrails.com/docs/authentication.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://docs.securitytrails.com/docs/overview.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://docs.securitytrails.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://docs.securitytrails.com/reference/get-whois-old-1.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://securitytrails.com/corp/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://securitytrails.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://web.archive.org/web/2026id_/https://securitytrails.com/corp/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing