DNS lookup
DNS lookup por any domain: see its IP addresses, mail servers, Nombre servers, TXT y other records.
Queries go a Cloudflare’s public DNS superado HTTPS service when you press the button.
Acerca de DNS lookup
DNS lookup por any domain: see its IP addresses, mail servers, Nombre servers, TXT y other records.
Forma parte de la sección «Datos y redes» de SmartCalcy. Se ejecuta en tu navegador sin cuenta, usa tu propia moneda y unidades (cámbialas en la parte superior de la página) y da estimaciones solo a título informativo, así que consulta la guía oficial antes de fiarte de un resultado.
Cómo usar la DNS lookup
Qué calcula y cuándo usarla
Looks up the DNS records de a domain name: its IPv4 y IPv6 addresses (A y AAAA), mail servers (MX), Nombre servers (NS), text records (TXT), aliases (CNAME), Zona Detalles (SOA) y certificate rules (CAA). Use it a check that a domain points where you expect, or a debug email y website set-up.
Cómo usarla, paso a paso
- Type a domain Nombre such as Ejemplo.com.
- Choose a record type, o Mantener “All comunes records”.
- Press “Look up DNS”.
- Read Cada uno record card. TTL es how many Segundos the answer may be cached.
Qué significa cada dato
- Domain Nombre – The domain a look up. Web addresses are cleaned a the domain, so https://example.com/page also works.
- Record type – One record type, o all the comunes ones.
Cómo leer los resultados
- A y AAAA – The IPv4 y IPv6 addresses the Nombre Puntos Hasta.
- MX – Mail servers, with a priority Número. Lower Números are tried first.
- NS, TXT, CNAME, SOA, CAA – Nombre servers, text records such as SPF, aliases, Zona authority y which certificate authorities may issue certificates.
La fórmula
No calculation. The browser asks Cloudflare’s public DNS superado HTTPS service por each record type y shows the answers it gets. TTL es the time en seconds that resolvers may cache an answer.
Un ejemplo práctico
A lookup de example.com returns an A record with an IPv4 address, MX records por mail, y TXT records including its SPF policy.
Supuestos y límites
- Answers come from a public resolver y may be cached por up a the TTL, so a change made a few minutes ago may not show yet.
- The lookup es made when you press the button.
- Only the comunes record types are offered.
Errores comunes
- Typing a full web address with a pa.ª y expecting records por the page. DNS works on domain names only.
- Expecting a Variación a Mostrar immediately. Caches hold old answers hasta the TTL runs out.
- Looking up a subdomain you have not created, which returns no records.
Preguntas frecuentes
What es a DNS record?
An entry that tells the internet something about a domain, such as which server hosts its website o handles its email.
What does TTL Media?
Hora a live, en seconds. It es how larga other servers may reuse an answer antes asking again.
Why are there several MX records?
They give backup mail servers. The one with the lowest priority Número es tried first.
What does NXDOMAIN Media?
The domain does not exist, so check the spelling.
Bote I look up an MX record only?
Sí. Choose MX en the record type list.