# Otto AI, pay as you go, x402 pay per call, GET /domain-age: Domain WHOIS API

> Domain age and registration intel from authoritative RDAP/WHOIS records: exact creation date, age in days and years, expiration date and days-until-expiry.

Otto AI's x402 pay per call plan for the domain WHOIS API costs $1.00 per 1,000 domains. We check each provider's docs for 9 fields: Registrant, Registrar, Created on, Updated on and 5 more. Otto AI's docs list none of the 9.
We haven't run Otto AI 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 81% 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/otto-ai/pay-as-you-go-x402-pay-per-call-get-domain-age
- [Domain WHOIS API in 2026: the best of 20+ providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://x402.ottoai.services/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://x402.ottoai.services/domain-age`
- API key: not needed
- Its API docs: https://x402.ottoai.services/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing#/paths/~1domain-age
- Sold by: Otto AI (https://ottoai.services?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 domains: $1.00
- 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: Domain age and registration intel from authoritative RDAP/WHOIS records: exact creation date, age in days and years, expiration date and days-until-expiry.

## 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: domain
- Method: GET
- Path: /domain-age

## About the plan

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

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

domain, registered, created, expires, age in days, age in years, days to expiry, generated at

## Otto AI's plans (1)

- [Otto AI, pay as you go, x402 pay per call, GET /domain-age](https://datacircle.dev/domain-whois-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-domain-age/llms.txt): $1.00 per 1,000, 0% complete

## Otto AI's calls for this API (2)

- `GET /domain-age`: [Otto AI, pay as you go, x402 pay per call, GET /domain-age](https://datacircle.dev/domain-whois-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-domain-age/llms.txt)
- `GET /whois-lookup`: [Otto AI, pay as you go, x402 pay per call, GET /whois-lookup](https://datacircle.dev/domain-whois-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-whois-lookup/llms.txt)

## Otto AI's APIs (2)

- [Otto AI: domain WHOIS API pricing, 1 plan, GET /domain-age](https://datacircle.dev/domain-whois-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-domain-age/llms.txt)
- [Otto AI: web scraping API pricing, 1 plan, GET /web-json-extract](https://datacircle.dev/web-scraping-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-web-json-extract/llms.txt)
- [Otto AI: web scraping API pricing, 1 plan, GET /web-links](https://datacircle.dev/web-scraping-apis/otto-ai/pay-as-you-go-x402-pay-per-call-get-web-links/llms.txt)

## Otto AI: 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
- [Vee3, $100 monthly, Scale, GET /v1/domains/whois](https://datacircle.dev/domain-whois-apis/vee3/100-monthly-scale-get-v1-domains-whois/llms.txt): $1.00 per 1,000, 56% complete
- [SnoopScan, $120 yearly](https://datacircle.dev/domain-whois-apis/snoopscan/120-yearly/llms.txt): $1.00 per 1,000, 44% complete
- [ScriptMasterLabs, pay as you go](https://datacircle.dev/domain-whois-apis/scriptmasterlabs/pay-as-you-go/llms.txt): $1.00 per 1,000, 0% 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 2026-11-09.

- https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://docs.useotto.xyz/legal/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://x402.ottoai.services/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://x402.ottoai.services/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://x402.ottoai.services/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://x402.ottoai.services/otto-x402-catalog.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing