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email-verify-api-production-d262.up.railway.app domain-check
https://email-verify-api-production-d262.up.railway.app/domain-check
payable
Check whether a domain has valid MX records and is not on the disposable list; also reports free-provider.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.001
- Network
- base
- Pay to
- 0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 320 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:17:46.727Z (1d ago)
- Category
- identity
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Femail-verify-api-production-d262.up.railway.app%2Fdomain-check"