How to align items inside a list, how can this be done simply

if i am adding a name and a phone number, then obviously lenghts will vary and the phone numberts won't align with the rest of them in the list so how do i align them

original list:

Billy Bob 556-7895
Bobby 456-7895
Jim 123-7845
Timy Boy 789-4563

aftert aligned:
a = space

Billyaaaa556-7895
Bobbyaaaa456-7895
Jimaaaaaa123-7845
Timyaaaaaa789-4562

please explain how??????