Registros DNS explicados: Guía completa
Entiende los tipos de registros DNS
Every website relies on DNS (Domain Name System) records to function. DNS is the phonebook of the internet — it translates domain names like example.com into IP addresses that computers use to communicate.
What Is DNS?
DNS stands for Domain Name System. When someone types your domain into a browser, their computer queries DNS servers to find your web server's IP address. Check any domain's records using our free DNS Records Checker.
Common DNS Record Types
A Record (Address)
The most fundamental record. Maps your domain to an IPv4 address (like 93.184.216.34). Every website needs at least one A record.
AAAA Record (IPv6 Address)
Same as A record but for IPv6 addresses. As IPv4 addresses run out, IPv6 is becoming increasingly important.
MX Record (Mail Exchange)
Controls where email for your domain is delivered. Without correct MX records, you cannot receive email at your domain.
CNAME Record (Canonical Name)
Creates an alias from one domain to another. Commonly used to make www.example.com point to example.com.
TXT Record
Stores text data for email authentication (SPF, DKIM, DMARC), domain verification, and security policies.
NS Record (Nameserver)
Specifies which nameservers are authoritative for your domain.
How to Check DNS Records
Use our free DNS Records Checker — enter any domain and see all records. Also check Domain to IP for quick lookups or Hosting Checker for provider details.
Common DNS Issues
Website not loading after transfer: DNS propagation takes 1-48 hours. Check with our DNS Checker.
Email not working: Verify MX records are correct. Even a small typo prevents delivery.
SSL not working: Ensure A record points to the correct server.
Frequently Asked Questions
How long do DNS changes take?
Typically 1-48 hours globally, depending on TTL settings.
Can I have multiple A records?
Yes. Multiple A records enable round-robin load balancing across servers.
What is TTL?
Time To Live — tells resolvers how long to cache a record. Lower TTL means faster propagation but more queries.
Do DNS records affect SEO?
Indirectly — through site speed (CDN setup), email deliverability (SPF/DKIM), and uptime.
Check your DNS now with our free DNS Records Checker.