# How.is, free: Domain WHOIS API

> Registrar, creation and expiry dates, nameservers and status codes for a domain.

How.is's domain WHOIS API on its Free calls plan. It costs $0.00 per 1,000 domains. How.is's docs list 5 of the 9 fields on our checklist: Registrar, Created on, Expires on, Name servers, Statuses.
We haven't run How.is 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/how-is/free
- [Domain WHOIS API: the 13 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://how.is?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://how.is/v1/domain/whois`
- API key: not needed
- Its API docs: https://how.is/docs.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#domain_whois
- Sold by: How.is (https://how.is?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 56%
- Registrar: ✓
- Created 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: URL pre-flight · Read a page (with verdict) · Company card · DNS records · Domain age · Domain availability · Domain change history · TLS certificate · DNSSEC · Email authentication · Security score · Blacklist status · IP intelligence · Site status · Page-change watch · Crawler identity check · Crawler identity check (batch)

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Registrar, creation and expiry dates, nameservers and status codes for a domain.

## Data

- Freshness: live
- Keep data: no limit
- Use data: Do not use the service to break the law, attack the hosts you look up, or resell it as a bulk mirror.

## Plan

- Pay: $0
- You get: 20 requests a day
- Enough for: 20 calls a day
- Expires: 00:00 UTC each day

## Rate limit

- Per day: 20
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: POST
- Path: /v1/domain/whois

## About the plan

- Plan: Free calls
- Who can get it: anyone

## The 5 fields the plan's answer can hold

registrar, created date, expiry date, name servers, status codes

## How.is's plans (4)

- [How.is, free](https://datacircle.dev/domain-whois-apis/how-is/free/llms.txt): $0.00 per 1,000, 56% complete, live
- [How.is, pay as you go](https://datacircle.dev/domain-whois-apis/how-is/pay-as-you-go/llms.txt): $5.00 per 1,000, 56% complete, live
- [How.is, top-up from $5](https://datacircle.dev/domain-whois-apis/how-is/top-up-from-5/llms.txt): $5.00 per 1,000, 56% complete, live
- [How.is, $5 monthly](https://datacircle.dev/domain-whois-apis/how-is/5-monthly/llms.txt): $5.00 per 1,000, 56% complete, live

## How.is's calls for this API (1)

- `POST /v1/domain/whois`: [How.is, free](https://datacircle.dev/domain-whois-apis/how-is/free/llms.txt)

## How.is's APIs (3)

- [How.is: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/how-is/free/llms.txt)
- [How.is: domain WHOIS API pricing, 4 plans](https://datacircle.dev/domain-whois-apis/how-is/free/llms.txt)
- [How.is: web scraping API pricing, 4 plans](https://datacircle.dev/web-scraping-apis/how-is/free/llms.txt)

## How.is: domain WHOIS API alternatives

- [WhoAPI, $499 monthly, Business, GET /, Live Whois API](https://datacircle.dev/domain-whois-apis/whoapi/499-monthly-business-get-live-whois-api/llms.txt): $4.99 per 1,000, 78% complete, live
- [fetcher.cloud, pay as you go](https://datacircle.dev/domain-whois-apis/fetcher-cloud/pay-as-you-go/llms.txt): $5.00 per 1,000, 44% complete, live
- [DomainRef, pay as you go, Pay per call, GET /v1/domain/age](https://datacircle.dev/domain-whois-apis/domainref/pay-as-you-go-pay-per-call-get-v1-domain-age/llms.txt): $5.00 per 1,000, 78% complete, live
- [ViewDNS.info, $6,039 yearly](https://datacircle.dev/domain-whois-apis/viewdns-info/6039-yearly/llms.txt): $5.032 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 2026-11-07.

- https://how.is?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://how.is/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://how.is/docs.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://how.is/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://how.is/prices?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://how.is/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing