Published on 11/ 9/2004
"Verizon Wireless has launched a free service that lets customers check their text message usage quickly: just dial #3282 (DATA) and hit send. You’ll be connected to an automated system that will tell you your usage but you will also receive the same information in a free text message." (mobiletracker)
Usually they don't provide the info. The reason: you continue to use SMS and they keep charging you...