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Ok. This is just fun #TelCo shit.

So I called someone who does not have me in their contacts, on their company line with a PBX somewhere in there I'm guessing.

From my handset itself ( not my SIPs or Signal or whatever ) "Elf" is going to show up on Caller ID.

It's a fun party trick and I'm me.

How do you do it?

You call your provider and have them change your Caller ID. It's that simple.

I will now await the avalanche of new IDs running about telephone land while y'all have fun.