Trust check for any domain in one call
Trust check for any domain in one call: DNS records, email auth (SPF/DMARC/DKIM), WHOIS registrar and age, plus live HTTP status and TLS certificate issuer/expiry and HSTS. Free /preflight sample and landing page.
Answeringour last check, 2026-10-26
1 of 1checks answered this week
914 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.firstmention.uk/s/domain-intel/dns
| Category | Everything else |
|---|---|
| Provider host | api.firstmention.uk |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-26 | valid payment request | 402 | $0.01 | 914 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"domain": "github.com"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"domain": {
"description": "Domain to check, e.g. github.com",
"type": "string"
}
},
"required": [
"domain"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"domain": {
"type": "string"
},
"email_auth": {
"properties": {
"dmarc": {
"type": "boolean"
},
"spf": {
"type": "boolean"
}
},
"type": "object"
},
"http": {
"properties": {
"status": {
"type": "number"
}
},
"type": "object"
},
"ok": {
"type": "boolean"
},
"tls": {
"properties": {
"days_left": {
"type": "number"
},
"issuer": {
"type": "string"
}
},
"type": "object"
},
"whois": {
"properties": {
"age_days": {
"type": "number"
},
"registrar": {
"type": "string"
}
},
"type": "object"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}