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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 2026-09-15).
Resolves a domain name to its IPv4 address(es) via a paid DNS A-record lookup API
Price / call$0.003
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the resolved IPv4 address or addresses associated with the queried domain's DNS A record. The response format is open-ended but expected to include the IP address(es) mapped to the input domain.
Example use cases
Verify server IP before deployment
“Before I push this update, can you check what IP address api.myservice.com currently resolves to so I can confirm it's pointing at the right server?”
Detect IP change for a competitor site
“Look up the current IP address for competitor.com — I want to know if they've changed hosting providers recently.”
Automate hostname-to-IP resolution in a workflow
“I need the IP address for db.internal.company.io so I can whitelist it in our firewall rules — can you resolve that domain for me?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/network/dns.a--domain-ip-addressWhen to prefer
Choose this endpoint when you need a quick, pay-per-use DNS A record resolution without setting up your own DNS resolver infrastructure. It's well-suited for low-volume, on-demand hostname-to-IP lookups inside agent workflows that already support x402 micropayments. Prefer dedicated DNS APIs (e.g. Google DNS-over-HTTPS or Cloudflare) for high-volume or free-tier needs.
Side effects
- Domain does not exist or has no A record — returns error or empty result
- Invalid input format (e.g. not a valid domain string) — likely a 400 or error JSON
- DNS resolution timeout — upstream DNS failure
- Payment failure via x402 protocol — 402 response if funds insufficient
- Vercel cold-start latency may cause occasional slow responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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