HN Show: Shortener for phone numbers

The domain "phon.li" is seven characters. If such a service would to take off, it would become irrelevant after aproximately 630 permutations in which case all the case-insensitive two-letter subdomains would be taken. At best, this shortener would only fulfill it's purpose if the subdomains were case-sensitive, in which case it could only fulfill 1,326 permutations for two-letter subdomains.

After two-characters, it's not exactly a shortener since it would be the same length or more characters than the average telephone number.

Thanks for your feedback. Maybe shortener is not the right word. It is more about having an easy to remember alternative to phone numbers. And it is good to grab someones attention, for example when you print your phon.li domain on xour business cards.