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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, $0.003/call, status unknown (last checked 2026-09-16).
Performs a DNS A record lookup for a given hostname, returning the resolved IPv4 address(es)
Price / call$0.003
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the resolved IPv4 address(es) associated with the queried hostname's DNS A record, including any relevant metadata about the resolution result.
Example use cases
Verify domain IP before deployment
“What IP address does api.mycompany.com currently resolve to? I need to confirm the DNS A record is pointing to the right server before we go live.”
Diagnose connectivity issue
“Can you do a DNS A record lookup for mail.example.org? I'm trying to figure out if the hostname is resolving at all or if the record is missing.”
Enrich infrastructure inventory
“I have a list of internal service hostnames and I need to know their current IPv4 addresses — start by resolving auth.internal.myapp.io for me.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/network/dns.a--dns-a-lookupWhen to prefer
Use this endpoint when you need a quick, pay-per-call DNS A record resolution without managing your own DNS resolver infrastructure. Ideal for AI agents that need to enrich hostnames with IP data on demand, verify DNS propagation, or perform lightweight infrastructure checks without a full DNS client library. Prefer this over general-purpose DNS APIs when operating in a micropayment-native (x402) workflow.
Side effects
- Non-existent domain returns an error or empty result (NXDOMAIN)
- Malformed hostname input may result in a validation error
- Domains with no A record (e.g. only AAAA or CNAME) may return empty or null
- Network or upstream DNS resolver timeouts may cause failures
- Rate limiting or payment failure may result in a 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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