A tourist in Tokyo on a travel eSIM shows up with a Hong Kong IP address. How home-routed roaming works, and how to tell a roamer from a VPN.…
Keep users in the loop Ship release notes that get read. Try Noticeable 
Wyden told ten states that businesses use flawed GeoIP data to drop GPC opt-outs. Where state-level IP geolocation breaks, and a rule that only widens rights.…
Reverse DNS explained: how in-addr.arpa and ip6.arpa turn an IP into a name, why only forward-confirmed rDNS is worth trusting, and how bot operators use it.…