# UnyKorn, pay as you go: Domain WHOIS API

> Domain WHOIS/RDAP: registrar, created, expires, age, status, nameservers, DNSSEC

UnyKorn's x402 plan for the domain WHOIS API costs $3.00 per 1,000 domains. We check each provider's docs for 9 fields. UnyKorn's docs list 4: Registrar, Name servers, Statuses, DNSSEC.
We haven't run UnyKorn through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 587 plans for domain WHOIS APIs by price. Half the plans cost $1.54 or less per 1,000 domains. This plan costs less per 1,000 domains than 28% of the 587 plans. UnyKorn has no free domain WHOIS API plan. [133 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/unykorn/pay-as-you-go
- [Domain WHOIS API in 2026: the best of 50+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://twin.unykorn.org/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `POST https://twin.unykorn.org/web/whois`
- API key: not needed
- Its API docs: https://twin.unykorn.org/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: UnyKorn (https://twin.unykorn.org?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 44%
- Registrar: ✓
- Name servers: ✓
- Statuses: ✓
- DNSSEC: ✓

## Price

- $ per 1,000 domains: $3.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Domain WHOIS/RDAP: registrar, created, expires, age, status, nameservers, DNSSEC

## Data

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

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: params.domain
- Method: POST
- Path: /web/whois

## About the plan

- Plan: x402
- Who can get it: anyone

## The 8 fields the plan's answer can hold

registrar, registered at, expires at, domain age in days, days to expiry, statuses, nameservers, DNSSEC signed

## UnyKorn's plans (3)

- [UnyKorn, pay as you go](https://datacircle.dev/domain-whois-apis/unykorn/pay-as-you-go/llms.txt): $3.00 per 1,000, 44% complete
- [UnyKorn, $5 pack](https://datacircle.dev/domain-whois-apis/unykorn/5-pack/llms.txt): $3.00 per 1,000, 44% complete
- [UnyKorn, $25 pack](https://datacircle.dev/domain-whois-apis/unykorn/25-pack/llms.txt): $3.00 per 1,000, 44% complete

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

- `POST /web/whois`: [UnyKorn, pay as you go](https://datacircle.dev/domain-whois-apis/unykorn/pay-as-you-go/llms.txt)

## UnyKorn's APIs (8)

- [UnyKorn Hacker News search API pricing, 3 plans](https://datacircle.dev/hacker-news-search-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn Company enrichment API pricing, 3 plans](https://datacircle.dev/company-enrichment-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn Domain WHOIS API pricing, 3 plans](https://datacircle.dev/domain-whois-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn Email verification API pricing, 3 plans](https://datacircle.dev/validate-email-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn IP company lookup API pricing, 3 plans](https://datacircle.dev/ip-company-lookup-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn Web scraping API pricing, 3 plans](https://datacircle.dev/web-scraping-apis/unykorn/pay-as-you-go/llms.txt)
- [UnyKorn Business verification API pricing, 3 plans, POST /report/counterparty](https://datacircle.dev/business-verification-apis/unykorn/pay-as-you-go-x402-post-report-counterparty/llms.txt)
- [UnyKorn Business verification API pricing, 3 plans, POST /agents/evidence-01/dossier](https://datacircle.dev/business-verification-apis/unykorn/pay-as-you-go-x402-post-agents-evidence-01-dossier/llms.txt)
- [UnyKorn Business verification API pricing, 3 plans, POST /screen/entity](https://datacircle.dev/business-verification-apis/unykorn/pay-as-you-go-x402-post-screen-entity/llms.txt)
- [UnyKorn Company hierarchy API pricing, 3 plans, POST /report/counterparty](https://datacircle.dev/company-hierarchy-apis/unykorn/pay-as-you-go-x402-post-report-counterparty/llms.txt)
- [UnyKorn Company hierarchy API pricing, 3 plans, POST /agents/evidence-01/dossier](https://datacircle.dev/company-hierarchy-apis/unykorn/pay-as-you-go-x402-post-agents-evidence-01-dossier/llms.txt)
- [UnyKorn Company hierarchy API pricing, 3 plans, POST /screen/entity](https://datacircle.dev/company-hierarchy-apis/unykorn/pay-as-you-go-x402-post-screen-entity/llms.txt)

## UnyKorn: domain WHOIS API alternatives

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

We list other providers' plans closest to this plan in price per 1,000 domains.

- [WhoisFreaks, $150 pack, 50,000 API Credits, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/150-pack-50000-api-credits-post-v2-0-bulkwhois-live/llms.txt): $3.00 per 1,000, 100% complete, live
- [DomScan, $10 pack, 10,000 credits, POST /v1/whois/bulk](https://datacircle.dev/domain-whois-apis/domscan/10-pack-10000-credits-post-v1-whois-bulk/llms.txt): $3.00 per 1,000, 100% complete
- [ipv4.fr, pay as you go](https://datacircle.dev/domain-whois-apis/ipv4-fr/pay-as-you-go/llms.txt): $3.00 per 1,000, 44% complete
- [Ambolt, pay as you go](https://datacircle.dev/domain-whois-apis/ambolt/pay-as-you-go/llms.txt): $3.00 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 2026-11-10.

- https://genesis402.com/catalog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://twin.unykorn.org/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://twin.unykorn.org/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://twin.unykorn.org/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing