May 11, 2024
As a developer, understanding and verifying your domain’s DNS configurations is crucial for maintaining the security, performance, and reliability of your services. This guide covers how to check the most important DNS and domain registration details, including A records, MX records, SPF records, TXT records, and more.
A Record
Description: A (Address) Records connect your domain to an IP address. Verifying your A record ensures that your domain points to the correct server IP.
Tool: MXToolbox (MXToolbox A Record) or Terminal command: dig +short yourdomain.com A
MX Record
Description: MX (Mail Exchange) Records are crucial for email routing. They specify the mail servers responsible for receiving email messages on behalf of your domain.
Tool: MXToolbox (MXToolbox)
SPF Record
Description: SPF (Sender Policy Framework) Records help prevent email spoofing by specifying which mail servers are permitted to send email on behalf of your domain.
Tool: MXToolbox (SPF Record Lookup)
TXT Record
Description: TXT Records are used for various purposes, including providing general information about the domain, sending data to servers, and verifying domain ownership.
Tool: MXToolbox (TXT Record) or Terminal command: dig +short yourdomain.com TXT
Whois Domain Registration
Description: Checking the WHOIS information for your domain helps verify the owner’s contact information, registration status, and expiration date.
Tool: MXToolbox (WHOIS Lookup)
SSL/TLS Certificate Check
Description: Ensuring your domain’s SSL certificates are valid and correctly installed is crucial for securing your website.
Tool: SSL Checker (SSL Test)
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