The passport book number is a unique alphanumeric code that identifies your passport. It is typically located on the top right-hand corner of the personal information page of your passport. The personal information page is the page that contains your photograph, name, date of birth, nationality, passport number, and other identifying details.
The passport book number is usually a 9-digit code, although it can vary in length and format depending on the country issuing the passport. It is separate from the passport number, which is also located on the personal information page.
Please note that the specific location of the passport book number can vary slightly between passport designs and countries. However, it is commonly found on the same page and in close proximity to the passport number. If you are having difficulty locating the passport book number in your passport, you can refer to the instructions provided by the passport issuer or contact the appropriate passport agency or embassy/consulate for assistance.