Every IPv4Scanner guide tagged networking. All posts »
2026-09-27 · IPV4 Scanner · 4 min read
What open, closed and filtered ports actually mean, how to check a port from outside your network, and which ports you never want exposed.
2026-09-26 · IPV4 Scanner · 5 min read
What each common DNS record type does, when to use a CNAME versus an A record, and the mistakes that quietly break a domain.
2026-09-25 · IPV4 Scanner · 4 min read
What ping actually measures, what counts as good for gaming and video calls, and why a low ping matters more than a big download number.
2026-09-24 · IPV4 Scanner · 4 min read
What each line of a traceroute means, why gaps and high hops usually aren't the problem, and how to actually tell where a slow connection breaks.
2026-09-20 · IPV4 Scanner · 4 min read
What the slash in 192.168.1.0/24 means, how to work out network and broadcast addresses, and how to split a network without the maths hurting.
2026-09-19 · IPV4 Scanner · 4 min read
How much bandwidth each activity actually needs, why upload and latency matter more than the headline number, and how to stop overpaying.
2026-09-17 · IPV4 Scanner · 4 min read
Find your router's IP address on Windows, macOS, Linux, iPhone and Android, plus what to do when the usual addresses don't work.
2026-09-16 · IPV4 Scanner · 4 min read
The real difference between static and dynamic IP addresses, when paying for a static one is worth it, and the workarounds that make it unnecessary.
2026-09-15 · IPV4 Scanner · 5 min read
What an IP address actually is, why yours changes, the difference between public and private addresses, and what a website can really tell about you from it.
2026-09-15 · IPV4 Scanner · 5 min read
Why IPv6 exists, how it differs from IPv4 beyond address length, why adoption took decades, and what it means for you in practice.
2026-09-14 · IPV4 Scanner · 6 min read
Why DNS changes don't appear instantly, what TTL actually controls, and how to check propagation from around the world without waiting 48 hours.