Cifra
Generate vanity numbers from your own phone number to make it unforgettable.
Created February 2023
Updated March 2025
Cifra is a website that lets you generate vanity phone numbers from an inputted phone number. I made the first version in February 2023, and later updated it in January 2024 to make the generation more efficient.
In short, to generate all possible vanity phone numbers, Cifra converts every word in a word list to a string of numbers corresponding to the digits on the typical telephone keypad, checks if any of those numbers match with the inputted phone number, replaces the matched digits with the corresponding word, and finally displays each vanity number. For a more in-depth explanation, read my blog post: Dialing Letter Instead of Digits.
The word "cifra" (pronounced SEE-fra) is a Spanish word that can be translated to "number," "figure," or "cipher."
The logo shows the word "Cifra" with the letters' corresponding telephone keypad digits in front of it.