How to check if the number belongs to sip or physical?

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Mesuti2020-02-20 15:33:54

Telephony

Mesuti, 2020-02-20 15:33:54

Hey!
Spam calls, how to check if the numbers are real or from sip?

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Alexander, 2020-02-20
@Mesuti

Physical numbers they too can be sip. It is necessary to check the operator by the first 5 digits to find who it belongs to, and there is already a degree of trust in the operator.