# TLDix, free: Domain WHOIS API

> TLDix API gives developers structured access to renewal and expiration data.

TLDix's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. TLDix's docs list 5: Registrar, Created on, Expires on, Name servers, Statuses.
TLDix limits how many calls you get but gives no number.
We haven't run TLDix through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
This plan is free. We rank 631 plans for domain WHOIS APIs by price. Half the plans cost $1.663 or less per 1,000 domains. [128 domain WHOIS API plans on our price sheet are free.](https://datacircle.dev/best-domain-whois-api.txt) [WhoisRequest's free plan](https://datacircle.dev/domain-whois-apis/whoisrequest/free-get-api-v1-lookup-whois-domain-name/llms.txt) scores highest of the free plans in our benchmark, at 96.9 out of 100.
[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. [UAPI's CNY 4.90 pack](https://datacircle.dev/domain-whois-apis/uapi/cny-4-90-pack/llms.txt) costs the least for 10,000 domains a month: about $0.73.
[WhoisRequest](https://datacircle.dev/domain-whois-apis/whoisrequest/free-get-api-v1-lookup-whois-domain-name/llms.txt), [thenetworkery](https://datacircle.dev/domain-whois-apis/thenetworkery/free/llms.txt) and [FluentEDI](https://datacircle.dev/domain-whois-apis/fluentedi/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/tldix/free
- [Domain WHOIS API in 2026: the best of 40+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://tldix.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#pricing
- Request: `GET https://tldix.com/api/v1/domain/{domain_adi}`
- API key: with the plan, on https://tldix.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#pricing
- Its API docs: https://tldix.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: TLDix (https://tldix.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-11

## 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: nothing else

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: TLDix API gives developers structured access to renewal and expiration data.

## Data

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

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain_adi. Optional: refresh
- Method: GET
- Path: /api/v1/domain/{domain_adi}

## About the plan

- Plan: Free
- Who can get it: anyone with an account (email verification first)

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

success, domain, registered, registration date, expiry date, last changed date, last checked, registrar, follower count, status, nameservers

## TLDix's plans (7)

- [TLDix, free](https://datacircle.dev/domain-whois-apis/tldix/free/llms.txt): $0.00 per 1,000, 56% complete, stored
- [TLDix, $6 monthly](https://datacircle.dev/domain-whois-apis/tldix/6-monthly/llms.txt): 56% complete, stored
- [TLDix, $19 monthly](https://datacircle.dev/domain-whois-apis/tldix/19-monthly/llms.txt): 56% complete, stored
- [TLDix, $99 monthly](https://datacircle.dev/domain-whois-apis/tldix/99-monthly/llms.txt): 56% complete, stored
- [TLDix, $60 yearly](https://datacircle.dev/domain-whois-apis/tldix/60-yearly/llms.txt): 56% complete, stored
- [TLDix, $180 yearly](https://datacircle.dev/domain-whois-apis/tldix/180-yearly/llms.txt): 56% complete, stored
- [TLDix, $948 yearly](https://datacircle.dev/domain-whois-apis/tldix/948-yearly/llms.txt): 56% complete, stored

## TLDix's calls (1)

- `GET /api/v1/domain/{domain_adi}`: [TLDix, free](https://datacircle.dev/domain-whois-apis/tldix/free/llms.txt)

## TLDix's APIs (1)

- [TLDix Domain WHOIS API pricing, 7 plans](https://datacircle.dev/domain-whois-apis/tldix/free/llms.txt)

## TLDix: domain WHOIS API alternatives

[TLDix alternatives: other domain WHOIS API providers by price](https://datacircle.dev/tldix-alternatives.txt)

We list other providers' plans closest to this plan in price per 1,000 domains. Each plan in the list gives stored data.

- [APIHZ, free, Registered user, GET /api/wangzhan/whoisrdap.php](https://datacircle.dev/domain-whois-apis/apihz/free-registered-user-get-api-wangzhan-whoisrdap-php/llms.txt): $0.00 per 1,000, 78% complete, stored
- [isMalicious, free](https://datacircle.dev/domain-whois-apis/ismalicious/free/llms.txt): $0.00 per 1,000, 67% complete, stored
- [who.is, free, GET /v1/rdap/{domain}](https://datacircle.dev/domain-whois-apis/who-is/free-get-v1-rdap-domain/llms.txt): $0.00 per 1,000, 44% complete, stored
- [DNSai, $499 monthly, Enterprise, GET /api/v1/domains/{id}/whois/](https://datacircle.dev/domain-whois-apis/dnsai/499-monthly-enterprise-get-api-v1-domains-id-whois/llms.txt): $1.663 per 1,000, 89% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-11.

- https://tldix.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://tldix.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://tldix.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing