Domain Validator API
Real-time domain validation: format check, DNS status, A/AAAA/MX records, and TLD verification.
Validate any domain in milliseconds to check its syntax, DNS activity, associated IP addresses, and MX records for email deliverability. Ideal for cleaning registration forms, preventing email bounces, and monitoring domain health across your infrastructure. No external API calls — 100% server-side.
How it works
Three steps. No complex setup.
Normalización del dominio
El servicio elimina protocolos (http/https) y rutas, normalizando el input a un dominio limpio.
Validación de formato
Se verifica que el dominio siga el estándar RFC 1035: etiquetas separadas por puntos, caracteres válidos, longitud máxima de 253 caracteres.
Resolución DNS paralela
Se lanzan simultáneamente consultas DNS para registros A (IPv4), AAAA (IPv6) y MX, minimizando la latencia total.
Análisis de TLD y estado
Se verifica el TLD contra una lista de extensiones reconocidas y se determina si el dominio está activo basándose en los resultados DNS.
Who is it for?
Response example
Real input and output. What you send and what you get back.
// Input
{
"domain": "google.com"
}// Output
{
"domain": "google.com",
"is_valid_format": true,
"is_active": true,
"has_a_record": true,
"has_aaaa_record": true,
"has_mx_record": true,
"tld": "com",
"tld_valid": true,
"registrable": true,
"ip_addresses": [
"142.250.184.14"
],
"mx_records": [
"smtp.google.com"
],
"registrar": "MarkMonitor Inc.",
"nameservers": [
"ns1.google.com",
"ns2.google.com"
],
"error": null
}Try it now
// live demo — no account needed to try
Playground
Integrate into your project
Copy and paste. Replace YOUR_API_KEY with your real key.
curl -X POST https://jsnhlab.manus.space/api/trpc/domainValidator.validate \
-H "Content-Type: application/json" \
-H "x-api-key: TU_API_KEY" \
-d '{"json": {"domain": "google.com"}}'Why choose JSNH Engine Lab
Low latency
Responses in under 200ms
Secure authentication
API keys with per-plan rate limiting
Usage tracking
Every request logged with metrics
Production ready
Input validation and typed errors
Frequently asked questions
Everything you need to know before integrating.
Other modules
Expand your integration with more APIs from the catalogue.
Email Validator API
Validate email addresses instantly. Detect fake, disposable and invalid emails.
1 token / call →
Phone Validator API
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1 token / call →
URL Checker API
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2 tokens / call →
// production ready
Start using Domain Validator API
Sign up free and get 1,000 tokens to start. No credit card. No complex setup.