How do you dial star-67 from an extension?

*67 is the code in North America (USA, Canada, etc.) to block your caller ID from being sent, on a per-call basis. (If you are on a rotary or pulse-dial phone, you can use 1167 instead of *67.) This code should always be the very first thing dialed, before any other codes or prefixes. For example, if you want to block caller ID and also cancel call waiting, you should dial *67 first, then *70. So, to dial a long distance call with caller ID blocked, dial:

1. *67 (or 1167) first,
2. then other "star codes" such as *70,
3. then the long distance company code (if applicable): 101xxxx,
4. then the long distance prefix 1,
5. then the area code and number.