# Siftwright, $29 monthly: Domain WHOIS API

> Who registered that domain, when, and until when.

Siftwright's domain WHOIS API on its Starter plan. It costs $0.967 per 1,000 domains. Siftwright's docs list 8 of the 9 fields on our checklist: Registrar, Created on, Updated on, Expires on, Name servers, Statuses, DNSSEC, Abuse contact.
We haven't run Siftwright through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
Half of the 316 plans we rank by price cost $1.495 per 1,000 domains or less. This plan costs less per 1,000 domains than 82% of the 316 plans.
[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/siftwright/29-monthly
- [Domain WHOIS API: the 13 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://siftwright.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://siftwright.com/v1/domain-whois`
- API key: with the plan, on https://siftwright.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Its API docs: https://siftwright.com/docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#domain-whois
- Sold by: Siftwright (https://siftwright.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-07

## In the answer

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

## Price

- $ per 1,000 domains: $0.967
- Per: result
- Billing: monthly
- $ a month: $29

## Charges

- Also pays for: from the same budget: POST /v1/youtube-transcript · POST /v1/screenshot · POST /v1/google-news · POST /v1/pqc-scan · POST /v1/contact-details · POST /v1/tech-stack · Apple App Store reviews endpoint (POST /v1/app-store-reviews) · POST /v1/ats-jobs

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.967

## In their words

- Their pitch: Who registered that domain, when, and until when.

## Data

- Keep data: no limit
- Use data: You're responsible for how you use the tools and the data they return. Use them lawfully, respect the terms and rights of the websites and services you access, and don't use them to harm others or to collect personal data without a lawful basis.

## Plan

- Pay: $29
- You get: 10,000 results a month
- Enough for: 30,000 results a month
- Expires: end of billing period

## Rate limit

- Per second: 1
- Batch: 50

## Speed

- Answer: in the call

## The call

- You send: one of domain or domains. Optional: includeDns
- Method: POST
- Path: /v1/domain-whois

## About the plan

- Plan: Starter
- Who can get it: anyone

## The 21 fields the plan's answer can hold

domain, TLD, is registered, likely available, registrar, registrar IANA ID, registrar abuse email, created date, updated date, expiry date, domain age, days until expiry, status codes, name servers, DNSSEC, DNS records, lookup source, lookup source URL, status, results returned, credits used

## Siftwright's plans (4)

- [Siftwright, $29 monthly](https://datacircle.dev/domain-whois-apis/siftwright/29-monthly/llms.txt): $0.967 per 1,000, 89% complete
- [Siftwright, $99 monthly](https://datacircle.dev/domain-whois-apis/siftwright/99-monthly/llms.txt): $0.66 per 1,000, 89% complete
- [Siftwright, $299 monthly](https://datacircle.dev/domain-whois-apis/siftwright/299-monthly/llms.txt): $0.399 per 1,000, 89% complete
- [Siftwright, $999 monthly](https://datacircle.dev/domain-whois-apis/siftwright/999-monthly/llms.txt): $0.222 per 1,000, 89% complete

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

- `POST /v1/domain-whois`: [Siftwright, $29 monthly](https://datacircle.dev/domain-whois-apis/siftwright/29-monthly/llms.txt)

## Siftwright's APIs (5)

- [Siftwright: App Store review API pricing, 4 plans](https://datacircle.dev/app-store-review-apis/siftwright/29-monthly/llms.txt)
- [Siftwright: news API pricing, 4 plans](https://datacircle.dev/news-apis/siftwright/29-monthly/llms.txt)
- [Siftwright: company open jobs API pricing, 4 plans](https://datacircle.dev/company-open-job-apis/siftwright/29-monthly/llms.txt)
- [Siftwright: tech stack API pricing, 4 plans](https://datacircle.dev/company-technology-apis/siftwright/29-monthly/llms.txt)
- [Siftwright: domain WHOIS API pricing, 4 plans](https://datacircle.dev/domain-whois-apis/siftwright/29-monthly/llms.txt)

## Siftwright: domain WHOIS API alternatives

- [WhoisFreaks, $1,000 monthly, Monthly Subscription, 1,000,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/1000-monthly-monthly-subscription-1000000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $1.00 per 1,000, 100% complete, live
- [Whoxy, $1,000 pack](https://datacircle.dev/domain-whois-apis/whoxy/1000-pack/llms.txt): $1.00 per 1,000, 78% complete, live
- [DomScan, $85 pack, 250,000 credits, POST /v1/whois/bulk](https://datacircle.dev/domain-whois-apis/domscan/85-pack-250000-credits-post-v1-whois-bulk/llms.txt): $1.02 per 1,000, 100% complete
- [Chinaz, CNY 14,000 pack, 2,000,000 calls, GET /single/whois](https://datacircle.dev/domain-whois-apis/chinaz/cny-14000-pack-2000000-calls-get-single-whois/llms.txt): $1.047 per 1,000, 67% complete

## 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://siftwright.com/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://siftwright.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://siftwright.com/domain-whois-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://siftwright.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://siftwright.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://siftwright.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing