ブロック番号 でしょう
burokkubangōdeshō
1. Block number, likely.; Probably block number.
Noun
#356044
1. Block number, likely.; Probably block number.
1. telephone number
1. number on the back of a player's uniform; uniform number
1. number; series of digits
1. registration number
1. account number (bank, etc.)
1. it seems; I think
2. right?; don't you agree?
1. Was the phone number.