Which SIP Trunk service allows using all callerIDs?

I am computer engineering student. It was fun to troll my friends with spoofing. But now i want to dive more into SIP Trunk. I want to test, how it works etc. I do need a SIP Trunk service which allows to use all callerIDs. I tried voip.ms, it didn’t worked as expected. I would be glad if you provide me names of these providers.

I would appreciate if you do not talk about the laws like a lawyer

submitted by /u/Fanuxiko
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from hacking: security in practice https://ift.tt/MEHsBTA

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