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PennyRail DNS A Record Lookup
x402
PennyRail DNS A Record Lookup is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Resolves a domain name to its DNS A record (IPv4 address) via a paid API endpoint
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the operation name (e.g. 'dns.a') and a result field with the resolved IPv4 address or addresses for the queried domain.
Example use cases
Verify domain DNS before deployment
“I'm about to deploy my app — can you check what IP address api.mycompany.com resolves to right now so I can confirm the DNS is pointing to the right server?”
Investigate suspicious domain activity
“Someone flagged a suspicious domain called fastlogin-secure.net — can you resolve its A record so I can see what IP it's pointing to?”
Automate infrastructure health monitoring
“Check the A record for status.myservice.io and tell me the IP it currently resolves to so I can compare it against our expected server address.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/f/dns.aWhen to prefer
Choose this endpoint when you need a pay-per-query DNS A record lookup without provisioning your own DNS resolver infrastructure, especially in agent workflows where micro-payment via x402/USDC is already supported. It is a lightweight, per-call option for resolving individual hostnames to IPv4 addresses without API keys or subscriptions.
Side effects
- Domain does not exist or has no A record — result may be empty or null
- Invalid domain string input — malformed hostname
- Network or DNS resolution failure — upstream DNS timeout
- Payment failure — x402 payment not accepted, endpoint returns 402
- Rate limiting or service unavailability on the Vercel deployment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | domain string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | — | |
| operationrequired | string |
Tags
x402
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