Or you are in Germany and phone number have variable length. They even have the word “number street” to mean “all phone numbers starting with 0123456” for examp

Or you are in Germany and phone number have variable length. They even have the word “number street” to mean “all phone numbers starting with 0123456” for example. It’s not a block, it’s a street, which can branch out in blocks of different lengths. Completely insane.