Network & DNS Diagnostics BLOG

Network & DNS Diagnostics

IP lookups, DNS propagation, HTTP header inspection, and web performance.

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Network & DNS Diagnostics

2026-08-30

How to Check DNS Records & Troubleshoot Global DNS Propagation [Volledige gids en praktische tips]

Master A, AAAA, CNAME, MX, TXT, and NS DNS records. Learn how TTL values influence global name server caching, and how to verify domain records online. Ontdek in dit diepgaande artikel de praktische stappen en beste werkwijzen.

6 min readRead Article

Network & DNS Diagnostics

2026-08-16

What is Reverse DNS (rDNS) & Why PTR Records Prevent Email Spam Filtering [Volledige gids en praktische tips]

Learn how Pointer (PTR) records map IP addresses back to domain names. Discover why mail servers enforce Forward-Confirmed reverse DNS (FCrDNS) for spam rejection. Ontdek in dit diepgaande artikel de praktische stappen en beste werkwijzen.

5 min readRead Article

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