So I called Triton Global to ask about this. This number is actually a 10 digit billing code - on a phone bill, it shows up as a phone number but in actuality, it's a billing number. Our phone bill doesn't have a way of reflecting this so it just slots it in as a phone number. This IS for directory assistance. The rep I spoke with was able to see what number was dialed first and it looks like someone in my household was trying a 1888 number but dialed 1800 instead. They were taken to directory assistance who re-directed them and if they do that, that DOES cost money.