Developer API

Authentication & Rate Limits

All requests must be executed via standard HTTP GET queries. Rate limits apply to prevent abuse. Free users are limited to 15 queries daily across all endpoints. Premium subscribers enjoy unlimited access with dedicated keys.

1. WHOIS Lookup

Retrieve complete registration milestones, ownership VCARD blocks, and authoritative nameserver delegations.

Sample Request (Curl)

curl "https://xfox.net/api/whois.php?domain=google.com"
        

Sample JSON Response

{
  "status": "clientDeleteProhibited",
  "dnsVerified": true,
  "raw": {
    "registrar": "MarkMonitor Inc.",
    "created": "1997-09-15T04:00:00Z",
    "expires": "2028-09-14T04:00:00Z"
  }
}
        

2. DNS Lookup

Fetch authoritative zone configuration records (A, AAAA, MX, NS, TXT) with TTL ratings.

Sample Request (Curl)

curl "https://xfox.net/api/dns.php?domain=google.com"
        

Sample JSON Response

{
  "Answer": [
    {
      "name": "google.com.",
      "type": 1,
      "TTL": 300,
      "data": "142.250.185.78"
    }
  ]
}
        

3. SSL Verification

Query cryptographical parameters and verification details from port 443 certificates.

Sample JSON Response

{
  "subject": "google.com",
  "issuer": "Google Trust Services",
  "signature_algorithm": "sha256WithRSAEncryption",
  "valid_from": "2026-05-10 12:00:00",
  "valid_to": "2026-08-08 12:00:00",
  "expired": false,
  "days_remaining": 54
}