# ShowAPI, free: Domain WHOIS API

> 用于查询域名是否已被注册及详细信息的数据库接口，适用于域名注册商、网站开发者、企业用户等，可确保域名可用性并获取注册者信息，适用于域名注册、品牌保护、网络开发等场景。

ShowAPI's Free pack (one per account) plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. ShowAPI's docs list 6: Registrar, Created on, Updated on, Expires on, Name servers, Statuses.
We haven't run ShowAPI through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
This plan is free. We rank 400 plans for domain WHOIS APIs by price. Half the plans cost $1.50 or less per 1,000 domains. [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. [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/showapi/free
- [Domain WHOIS API: the 19 best of 80+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://www.showapi.com/apis/whois-domain-registration-info-2180?tab=price&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://route.showapi.com/2180-1`
- API key: with the plan, on https://www.showapi.com/apis/whois-domain-registration-info-2180?tab=price&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Its API docs: https://www.showapi.com/apis/whois-domain-registration-info-2180?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: ShowAPI (https://www.showapi.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: $0.00
- Per: call
- Billing: free

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: 用于查询域名是否已被注册及详细信息的数据库接口，适用于域名注册商、网站开发者、企业用户等，可确保域名可用性并获取注册者信息，适用于域名注册、品牌保护、网络开发等场景。

## Data

- Keep data: no limit
- Use data: 您使用我们的产品或服务，不得违反本协议宗旨用于其他目的或转让给第三方使用，不得将接口产品所涉查询核验结果用于约定以外的应用场景或者再次分发、销售、许可、分许可、授权、转售、出租、租借、进出口、转授权或转让集成使用，也不得将接口产品以任何形式交由第三方使用。

## Plan

- Pay: $0
- You get: 5 requests
- Enough for: 5 calls, once
- Expires: 12 months

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: POST
- Path: /2180-1

## About the plan

- Plan: Free pack (one per account)
- Who can get it: anyone with a mobile-verified account

## The 11 fields the plan's answer can hold

expiration date, registrar, update date, registration date, name servers, contact email, domain, WHOIS server, contact person, domain status, contact phone

## ShowAPI's plans (3)

- [ShowAPI, free](https://datacircle.dev/domain-whois-apis/showapi/free/llms.txt): $0.00 per 1,000, 67% complete
- [ShowAPI, CNY 20 pack](https://datacircle.dev/domain-whois-apis/showapi/cny-20-pack/llms.txt): $0.449 per 1,000, 67% complete
- [ShowAPI, CNY 200 pack](https://datacircle.dev/domain-whois-apis/showapi/cny-200-pack/llms.txt): $0.374 per 1,000, 67% complete

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

- `POST /2180-1`: [ShowAPI, free](https://datacircle.dev/domain-whois-apis/showapi/free/llms.txt)

## ShowAPI's APIs (8)

- [ShowAPI: business verification API pricing, 6 plans](https://datacircle.dev/business-verification-apis/showapi/free/llms.txt)
- [ShowAPI: company enrichment API pricing, 6 plans](https://datacircle.dev/company-enrichment-apis/showapi/free/llms.txt)
- [ShowAPI: domain WHOIS API pricing, 3 plans](https://datacircle.dev/domain-whois-apis/showapi/free/llms.txt)
- [ShowAPI: IP company lookup API pricing, 5 plans](https://datacircle.dev/ip-company-lookup-apis/showapi/free/llms.txt)
- [ShowAPI: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/showapi/free/llms.txt)
- [ShowAPI: web scraping API pricing, 5 plans](https://datacircle.dev/web-scraping-apis/showapi/free/llms.txt)
- [ShowAPI: web search API pricing, 6 plans](https://datacircle.dev/web-search-apis/showapi/free/llms.txt)
- [ShowAPI: news API pricing, 1 plan, POST /109-35](https://datacircle.dev/news-apis/showapi/free-l0-basic-post-109-35/llms.txt)
- [ShowAPI: news API pricing, 1 plan, POST /109-36](https://datacircle.dev/news-apis/showapi/free-l0-basic-post-109-36/llms.txt)

## ShowAPI: domain WHOIS API alternatives

- [SnoopScan, $4,428 yearly](https://datacircle.dev/domain-whois-apis/snoopscan/4428-yearly/llms.txt): $0.369 per 1,000, 44% complete
- [DomainIndex, $99 monthly](https://datacircle.dev/domain-whois-apis/domainindex/99-monthly/llms.txt): $0.396 per 1,000, 44% complete
- [Siftwright, $299 monthly](https://datacircle.dev/domain-whois-apis/siftwright/299-monthly/llms.txt): $0.399 per 1,000, 89% complete
- [Whoxy, $10,000 pack](https://datacircle.dev/domain-whois-apis/whoxy/10000-pack/llms.txt): $0.40 per 1,000, 78% 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://www.showapi.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/about/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/apis/whois-domain-registration-info-2180?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/apis/whois-domain-registration-info-2180?tab=price&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/island/free-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/openapi/market/2180.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://www.showapi.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing