The ISP does not guarantee that you will maintain the same IP address over any period of time. Your router will perform Magic so multiple private addresses and machines show up ‘behind’ this address- But we are concerned with the Public-pointing WAN (Wide Area Network) facing single IP address, not the LAN (Local Area Network) things going on behind, Most ISPs (Internet Service Providers) issue you a single “Public IP address”– a number drawn from a huge pool of unique addresses assigned to things connected to the internet, Just register some name just for this purpose alone : ) You could move your Domain Name Registration to their service

They give you FULL control over all of your DNS entries, and are, naturally, super-reliable and do not bug you with confusing up-sells. My particular solution involves use of the domains.google Google Domain Registry (Currently $12 a year) to do so. Plus, it’s hard to find reliable free ones any more YOu might try any number of services like to do this for you but I always prefer to Roll my Own.

Security implications are detailed elsewhere It could be used to reach into equipment at home while away, Etc. DDNS– Dynamic DNS- is used to track by name a changing IP address at, for example, your home or office equipment.

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