# YourAITools, pay as you go: Domain WHOIS API

> Is this domain or email real and trustworthy? DNS, SPF/DMARC, registration age, disposable mail.

YourAITools's x402 pay per call plan for the domain WHOIS API costs $2.00 per 1,000 domains. We check each provider's docs for 9 fields. YourAITools's docs list 4: Registrar, Name servers, Statuses, DNSSEC.
We haven't run YourAITools through [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt) yet.
We rank 495 plans for domain WHOIS APIs by price. Half the plans cost $1.575 or less per 1,000 domains. This plan costs less per 1,000 domains than 35% of the 495 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. [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.
[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/youraitools/pay-as-you-go
- [Domain WHOIS API in 2026: the best of 20+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://api.youraitools.co/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://api.youraitools.co/domaincheck/v1/domain`
- API key: not needed
- Its API docs: https://api.youraitools.co/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#/paths/~1domaincheck~1v1~1domain
- Sold by: YourAITools (https://youraitools.co?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-09

## In the answer

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

## Price

- $ per 1,000 domains: $2.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Is this domain or email real and trustworthy? DNS, SPF/DMARC, registration age, disposable mail.

## Data

- Freshness: live
- Keep data: no limit
- Use data: Don't use the site or APIs to break the law, attack or overload our services or anyone else's, get around rate limits or payments, or scrape the site in a way that harms it. [...] Everything the site and the APIs return is informational: listings, scores, verdicts, verification checks, page reads and screening results. Automated checks can be wrong or incomplete. Use them as one input, not as the only basis for a decision.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /domaincheck/v1/domain

## About the plan

- Plan: x402 pay per call
- Who can get it: anyone with a wallet paying USDC over x402 (Base, Polygon, Arbitrum One or Solana), no account or API key

## The 46 fields the plan's answer can hold

domain, registrable domain, public suffix, exists, registered, available, created, expires, expires in days, age in days, registrar, registrar IANA ID, status, name servers, DNSSEC signed, RDAP server, RDAP source, A records, AAAA records, CAA records, CNAME records, MX records, NS records, DNSSEC validated, null MX, TXT record count, accepts mail, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, mail provider, email grade, verdict, score, flag ID, flag severity, flag penalty, flag description, flag detail, DNS queries, engine, time taken, tier

## YourAITools's plans (6)

- [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
- [YourAITools, $0.01 pack](https://datacircle.dev/domain-whois-apis/youraitools/0-01-pack/llms.txt): $2.00 per 1,000, 44% complete, live
- [YourAITools, $1 pack](https://datacircle.dev/domain-whois-apis/youraitools/1-pack/llms.txt): $2.00 per 1,000, 44% complete, live
- [YourAITools, $5 pack](https://datacircle.dev/domain-whois-apis/youraitools/5-pack/llms.txt): $1.818 per 1,000, 44% complete, live
- [YourAITools, $20 pack](https://datacircle.dev/domain-whois-apis/youraitools/20-pack/llms.txt): $2.00 per 1,000, 44% complete, live
- [YourAITools, $50 pack](https://datacircle.dev/domain-whois-apis/youraitools/50-pack/llms.txt): $2.00 per 1,000, 44% complete, live

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

- `GET /domaincheck/v1/domain`: [YourAITools, pay as you go](https://datacircle.dev/domain-whois-apis/youraitools/pay-as-you-go/llms.txt)

## YourAITools's APIs (4)

- [YourAITools: tech stack API pricing, 7 plans](https://datacircle.dev/company-technology-apis/youraitools/free/llms.txt)
- [YourAITools: email verification API pricing, 7 plans](https://datacircle.dev/validate-email-apis/youraitools/free/llms.txt)
- [YourAITools: web scraping API pricing, 7 plans](https://datacircle.dev/web-scraping-apis/youraitools/free/llms.txt)
- [YourAITools: domain WHOIS API pricing, 6 plans](https://datacircle.dev/domain-whois-apis/youraitools/pay-as-you-go/llms.txt)

## YourAITools: 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
- [SiteCheck, pay as you go, x402 pay per call, GET /api/domain](https://datacircle.dev/domain-whois-apis/sitecheck/pay-as-you-go-x402-pay-per-call-get-api-domain/llms.txt): $2.00 per 1,000, 89% complete, live
- [Genexxis, pay as you go, x402 pay per call, GET /whois-bulk](https://datacircle.dev/domain-whois-apis/genexxis/pay-as-you-go-x402-pay-per-call-get-whois-bulk/llms.txt): $2.00 per 1,000, 78% 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 2026-11-09.

- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.youraitools.co/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.youraitools.co/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.youraitools.co/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.youraitools.co/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://api.youraitools.co/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://youraitools.co?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://youraitools.co/refund-policy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://youraitools.co/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing