•  Scary le Poo   ( @Scary_le_Poo@beehaw.org ) 
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    2 years ago

    Umm yeah they can… ISPs are assigned blocks of IP addresses that they they assign to their customers.

    That’s why you can look up any IP address and find out what provider that IP belongs to.

    The IP blocks are also common knowledge so you can look up what blocks are assigned to what ISP.