should IoT use numeric IP or nameserver name to talk to its server?

I like the idea of avoiding DNS, but I guess it could be convenient if servers need to be changed around or something. Or for some other reason I’m not aware of.

Which way do most IoT devices do this and why?

We usually recommend using DNS since IPs can sometimes change. If you want to save bytes, we suggest doing a separate DNS request at power on and caching that value somewhere for some period of time so you don’t have to make the DNS request every time you send data.

Can Hologram support an NB-IoT device that only allows an IP address in its configuration?
Are you saying that Hologram doesn’t have static IPs that don’t change? That would require device maintenance in person for our device.

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