IPv6 subnets: understanding /48, /56, and /64
Which IPv6 prefix should you use for your network? Detailed comparison of /48, /56, and /64 sizes with a table, decision tree, and real-world examples.
Network
Network infrastructure, protocols, and connectivity fundamentals.
3 articles
February 2026
January 2026
Surfshark DNS: how it works, benefits, and setup
Surfshark DNS is a free public DNS resolver (IPv4/IPv6, DoH) focused on privacy. Here's when to use it, how to configure it, and what to check.
December 2025
IPv4 vs IPv6: understand the differences and plan the transition
IPv4 vs IPv6: address sizes, performance, security, NAT, DNS... Learn how to differentiate ipv4 and ipv6, what ipv6 vs ipv4 really means, the ipv4 and ipv6 difference for DNS, and how to keep both stacks coexisting.