# heade.rs, free: Domain WHOIS API

> Registration: the domain's registrar, dates and status, or the regional registry's record for an address

heade.rs's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. heade.rs's docs list 8: Registrant, Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC.
heade.rs 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 74.4 out of 100. heade.rs ranks 13th 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/heade-rs/free
- [Domain WHOIS API in 2026: the best of 30+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://heade.rs/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://heade.rs/api/{query}`
- API key: not needed
- Its API docs: https://heade.rs/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: heade.rs (https://heade.rs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 89%
- Registrant: ✓
- Registrar: ✓
- Created on: ✓
- Updated on: ✓
- Expires on: ✓
- Name servers: ✓
- Statuses: ✓
- DNSSEC: ✓

## Score

- Overall score: 74.4
- Price score: 100
- Accuracy score: 79
- Cost to get started score: 100
- Bundle score: 0
- Performance score: 4

## 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: Registration: the domain's registrar, dates and status, or the regional registry's record for an address

## Data

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

## Plan

- Pay: $0

## Rate limit

- Per second: 0.5 (30 a minute)
- Batch: 1

## Speed

- Answer: in the call
- Median: 2.51 s

## The call

- You send: query
- Method: GET
- Path: /api/{query}

## About the plan

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

## The 12 fields the plan's answer can hold

domain, registrar, registrar ID, registrant, created date, updated date, expires date, statuses, nameservers, DNSSEC signed, registry server, record source

## heade.rs's plans (1)

- [heade.rs, free](https://datacircle.dev/domain-whois-apis/heade-rs/free/llms.txt): $0.00 per 1,000, 89% complete, live

## heade.rs's calls (1)

- `GET /api/{query}`: [heade.rs, free](https://datacircle.dev/domain-whois-apis/heade-rs/free/llms.txt)

## heade.rs's APIs (3)

- [heade.rs: tech stack API pricing, 1 plan](https://datacircle.dev/company-technology-apis/heade-rs/free/llms.txt)
- [heade.rs: domain WHOIS API pricing, 1 plan](https://datacircle.dev/domain-whois-apis/heade-rs/free/llms.txt)
- [heade.rs: IP company lookup API pricing, 1 plan](https://datacircle.dev/ip-company-lookup-apis/heade-rs/free/llms.txt)

## heade.rs: 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://heade.rs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/.well-known/agent-skills/heade-rs/SKILL.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/api/1.1.1.1?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/api/github.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://heade.rs/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing