What is my key number? Donna Post April 06, 2017 18:11 Updated Follow Your key number would be stamped onto the keys themselves, or for some New York locks on a small metal tag on the key ring. When you have the key number you can order keys here or register the number here. Related articles I still have a Kryptonite lock with a tubular cylinder and need replacement keys. Can I get replacement keys if I know my key number? I lost my keys. Can I order replacement copies without the key number? I live outside the U.S. and need new replacement keys. How do I order? Lost keys-what to do? Ordering Key Safe Program keys Comments 0 comments Article is closed for comments.