Slightly OT, but last week, I got about 400 phone number verification texts from various online services. Presumably someone was spamming service sign ups usin

Slightly OT, but last week, I got about 400 phone number verification texts from various online services. Presumably someone was spamming service sign ups using my number. Any clue why? The verification codes were typically 6 digits, so if they did this with a million other numbers, they would "get lucky" about 400 times, but that seems unlikely to me to be what they were doing. Also hall of shame to SeetGeek for allowing 50 sign up attempts in as many minutes all from the same number; every other service stopped well before that.