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how.is DNS Records Lookup
x402
how.is DNS Records Lookup is a paid API for AI agents from how.is, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Fetches A, AAAA, MX, NS, TXT and other DNS records for a domain along with resolve timing.
Price / call$0.005
Success—
StatusUnknown
How this service works
A, AAAA, MX, NS, TXT and other records for a domain, with resolve timing.
Output
A JSON object keyed by DNS record type (A, AAAA, MX, NS, TXT, and others if present), each containing the record values returned by authoritative DNS servers, plus a responseTime field indicating how long the DNS resolution took in milliseconds, and a receipt confirming the x402 micropayment charge of $0.005 USDC.
Example use cases
Email deliverability debugging
“Pull up all the DNS records for mycompany.com — specifically the MX and TXT records — so I can check whether our SPF, DKIM, and DMARC are configured correctly.”
Domain infrastructure reconnaissance
“Look up all the DNS records for competitor.io — I want to know their nameservers, IP addresses, and any TXT records they have set up.”
Verifying new domain configuration
“Can you check the DNS records for newsite.example.com and confirm the A record is pointing to 203.0.113.42 and the nameservers are set up correctly?”
Technical details
Endpoint
POSThttps://how.is/v1/domain/dns?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need raw, structured DNS record data for a domain including timing information and all record types in a single call. Prefer it over generic DNS tools when you need the resolve latency metric alongside records, or when operating in an x402 micropayment-native agent context. If you only need to check domain registration status, prefer the domain age or RDAP endpoint instead.
Side effects
- Domain does not exist (NXDOMAIN) — returns empty or error result
- Domain exceeds 253-character limit — rejected at input validation
- DNS timeout — resolver could not reach authoritative server within time limit
- Malformed domain string (contains spaces or invalid characters) — validation error
- SERVFAIL from authoritative DNS — upstream error reported in response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | A bare domain name, e.g. example.com |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"_shape": "data.data.records keyed by record type (A, AAAA, MX, NS, TXT, ...); data.data.responseTime."
},
"result": "DNS records for the requested subject",
"receipt": {
"rail": "x402",
"tool": "dns",
"charge_usd": 0.005,
"settlement_tx": "0x…"
}
}
}Tags
x402
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Zero review prompt (fires after every successful call)
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