# cl0q, free: Tech stack API

> Resolve a domain to its hosting org/ASN, region, IPs, MX and CNAME [...]

cl0q's tech stack API on its Free plan. It costs $0.00 per 1,000 companies. It returns 3 of the 13 key fields we check: Technology, About, Places.
We haven't run cl0q through [our tech stack API benchmark](https://datacircle.dev/best-tech-stack-api.txt) yet.
This plan is free. We rank 317 plans for tech stack APIs by price. Half the plans cost $8.90 per 1,000 companies or less.
[cl0q's $50 monthly plan](https://datacircle.dev/company-technology-apis/cl0q/50-monthly/llms.txt) is the cheapest paid plan per 1,000 companies: $0.0042.
[GetProspect's $49 monthly plan](https://datacircle.dev/company-technology-apis/getprospect/49-monthly/llms.txt) covers any number of companies. GetProspect's $49 monthly plan costs less up front than cl0q's $50 monthly plan.
[JobsPipe](https://datacircle.dev/company-technology-apis/jobspipe/149-monthly-growth-post-v1-stack-scan/llms.txt), [DetectZeStack](https://datacircle.dev/company-technology-apis/detectzestack/79-monthly-mega-get-analyze/llms.txt) and [GetProspect](https://datacircle.dev/company-technology-apis/getprospect/49-monthly/llms.txt) are the best tech stack API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-technology-apis/cl0q/free
- [Tech stack API: find a company's technologies](https://datacircle.dev/best-tech-stack-api.txt)
- Get it: https://cl0q.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Request: `GET https://cl0q.com/api/domain/{host}`
- API key: with the plan, on https://cl0q.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- Its API docs: https://cl0q.com/docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing#domain-profile-api
- Sold by: cl0q (https://cl0q.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 23%
- Technology: ✓
- About: ✓
- Places: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Favicon-hash API · Subdomains API · Search API

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Resolve a domain to its hosting org/ASN, region, IPs, MX and CNAME [...]

## Data

- Keep data: no limit
- Use data: You agree to use the Service lawfully and not to: abuse, overload, or attempt to disrupt the Service, circumvent rate limits, access controls, or other technical limits, use the Service for unlawful purposes, including harassment, fraud, or unauthorised access to other people's systems, resell or redistribute bulk index data except as a paid product expressly permits, or misrepresent cl0q or imply an endorsement or affiliation that does not exist.

## Plan

- Pay: $0
- You get: 30,000 requests a month
- Enough for: 30,000 calls a month

## Rate limit

- Per day: 1,000
- Per second: 0.5
- Batch: 1

## Speed

- Answer: in the call

## The call

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

## About the plan

- Plan: Free
- Who can get it: anyone

## The 21 fields the plan's answer can hold

domain, title, description, language, word count, HTTP status, content type, latency, outbound link count, IPv4, IPv6, CNAME, MX records, web server software, ASN, ASN organization, region, country, favicon SHA-256, first seen, last crawled

## cl0q's plans (9)

- [cl0q, free](https://datacircle.dev/company-technology-apis/cl0q/free/llms.txt): $0.00 per 1,000, 23% complete
- [cl0q, $9 pack](https://datacircle.dev/company-technology-apis/cl0q/9-pack/llms.txt): $0.09 per 1,000, 23% complete
- [cl0q, $10 monthly](https://datacircle.dev/company-technology-apis/cl0q/10-monthly/llms.txt): $0.013 per 1,000, 23% complete
- [cl0q, $25 monthly](https://datacircle.dev/company-technology-apis/cl0q/25-monthly/llms.txt): $0.0083 per 1,000, 23% complete
- [cl0q, $50 monthly](https://datacircle.dev/company-technology-apis/cl0q/50-monthly/llms.txt): $0.0042 per 1,000, 23% complete
- [cl0q, $99 yearly](https://datacircle.dev/company-technology-apis/cl0q/99-yearly/llms.txt): $0.011 per 1,000, 23% complete
- [cl0q, $249 yearly](https://datacircle.dev/company-technology-apis/cl0q/249-yearly/llms.txt): $0.0069 per 1,000, 23% complete
- [cl0q, $498 yearly](https://datacircle.dev/company-technology-apis/cl0q/498-yearly/llms.txt): $0.0035 per 1,000, 23% complete
- [cl0q, contact us](https://datacircle.dev/company-technology-apis/cl0q/contact-us/llms.txt): 23% complete

## cl0q's calls (1)

- `GET /api/domain/{host}`: [cl0q, free](https://datacircle.dev/company-technology-apis/cl0q/free/llms.txt)

## cl0q's APIs (1)

- [cl0q: tech stack API pricing, 9 plans](https://datacircle.dev/company-technology-apis/cl0q/free/llms.txt)

## cl0q: tech stack API alternatives

- [Pushbuild, free](https://datacircle.dev/company-technology-apis/pushbuild/free/llms.txt): $0.00 per 1,000, 8% complete
- [Botoi, $199 monthly](https://datacircle.dev/company-technology-apis/botoi/199-monthly/llms.txt): $0.0066 per 1,000, 23% complete, live
- [Store Leads, $950 monthly, Enterprise, GET /json/api/v1/all/domain/{name}](https://datacircle.dev/company-technology-apis/store-leads/950-monthly-enterprise-get-json-api-v1-all-domain-name/llms.txt): $0.018 per 1,000, 100% complete, 1 week
- [DetectZeStack, $79 monthly, Mega, POST /analyze/batch](https://datacircle.dev/company-technology-apis/detectzestack/79-monthly-mega-post-analyze-batch/llms.txt): $0.158 per 1,000, 23% complete, 24 hours
- [DomScan, $49 monthly, Scale, POST /v1/tech/bulk](https://datacircle.dev/company-technology-apis/domscan/49-monthly-scale-post-v1-tech-bulk/llms.txt): $0.294 per 1,000, 23% 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://cl0q.com/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://cl0q.com/datasets?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://cl0q.com/docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://cl0q.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing
- https://cl0q.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=tech-stack-api-pricing