IP addresses & networking
Technical guides about ip addresses & networking, written for practical follow-up.
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4 articlesTwo IP checks disagree. Which connection did each one measure?
Compare IPv4, dual-stack requests and VPN changes using a small connection record instead of an unexplained screenshot.
Will these IPv4 hosts fit? Check the boundary before the address count
Use subnet boundaries and reserved endpoints to decide whether a proposed network range can hold the intended devices.
One IPv6 address, two spellings: compare the bytes and the prefix
Recognise equivalent IPv6 notation and distinguish address scope from evidence of an actual internet connection.
After a VPN change, compare HTTP and WebRTC as separate routes
Build a repeatable before-and-after connection record that preserves protocols, address families and missing observations.
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4 guides