# TrustLookup, free: Domain WHOIS API

> Registrar, creation and expiry dates. A domain registered last week is worth a second look.

TrustLookup's Free plan for the domain WHOIS API costs $0.00 per 1,000 domains. We check each provider's docs for 9 fields. TrustLookup's docs list 3: Registrar, Created on, Expires on.
We haven't run TrustLookup through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
This plan is free. We rank 553 plans for domain WHOIS APIs by price. Half the plans cost $1.665 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. [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.
[WhoisJSON](https://datacircle.dev/domain-whois-apis/whoisjson/120-monthly/llms.txt), [Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt) and [IPAddress.to](https://datacircle.dev/domain-whois-apis/ipaddress-to/free/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/trustlookup/free
- [Domain WHOIS API in 2026: the best of 20+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.trustlookup.io/v1/lookup`
- API key: with the plan, on https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Its API docs: https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#lookup
- Sold by: TrustLookup (https://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 33%
- Registrar: ✓
- Created on: ✓
- Expires on: ✓

## Price

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

## Charges

- Repeat free: never
- Also pays for: from the same budget: Phone validation · Carrier lookup · Number portability · HLR live status · Email validation · IP intelligence

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Registrar, creation and expiry dates. A domain registered last week is worth a second look.

## Data

- Freshness: 24 hours
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 250 credits a month
- Enough for: 250 calls a month
- Expires: month

## Rate limit

- Per second: 5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: q. Optional: checks, fresh
- Method: GET
- Path: /v1/lookup

## About the plan

- Plan: Free
- Who can get it: anyone

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

domain, registrar, created date, expires date, domain age

## TrustLookup's plans (4)

- [TrustLookup, free](https://datacircle.dev/domain-whois-apis/trustlookup/free/llms.txt): $0.00 per 1,000, 33% complete, 24 hours
- [TrustLookup, $19 monthly](https://datacircle.dev/domain-whois-apis/trustlookup/19-monthly/llms.txt): $2.533 per 1,000, 33% complete, 24 hours
- [TrustLookup, $79 monthly](https://datacircle.dev/domain-whois-apis/trustlookup/79-monthly/llms.txt): $2.257 per 1,000, 33% complete, 24 hours
- [TrustLookup, $249 monthly](https://datacircle.dev/domain-whois-apis/trustlookup/249-monthly/llms.txt): $1.992 per 1,000, 33% complete, 24 hours

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

- `GET /v1/lookup`: [TrustLookup, free](https://datacircle.dev/domain-whois-apis/trustlookup/free/llms.txt)

## TrustLookup's APIs (6)

- [TrustLookup: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/trustlookup/free/llms.txt)
- [TrustLookup: domain WHOIS API pricing, 4 plans](https://datacircle.dev/domain-whois-apis/trustlookup/free/llms.txt)
- [TrustLookup: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/trustlookup/free/llms.txt)
- [TrustLookup: IP company lookup API pricing, 4 plans](https://datacircle.dev/ip-company-lookup-apis/trustlookup/free/llms.txt)
- [TrustLookup: people enrichment API pricing, 4 plans](https://datacircle.dev/person-enrichment-apis/trustlookup/free/llms.txt)
- [TrustLookup: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/trustlookup/free/llms.txt)

## TrustLookup: domain WHOIS API alternatives

- [WhoisFreaks, $2,000 pack, 1,000,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/2000-pack-1000000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $2.00 per 1,000, 100% complete, live
- [Whoxy, $10 pack](https://datacircle.dev/domain-whois-apis/whoxy/10-pack/llms.txt): $2.00 per 1,000, 78% complete, live
- [YourAITools, pay as you go](https://datacircle.dev/domain-whois-apis/youraitools/pay-as-you-go/llms.txt): $2.00 per 1,000, 44% complete, live
- [Eckari, pay as you go, x402, GET /v1/domains/{domain}/expiry](https://datacircle.dev/domain-whois-apis/eckari/pay-as-you-go-x402-get-v1-domains-domain-expiry/llms.txt): $2.00 per 1,000, 22% 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://trustlookup.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://trustlookup.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://trustlookup.io/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://trustlookup.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing