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In the US, the star code for this is *69 (or 1167 on a non- touch tone phone); in the UK, 1471 is used, and in Australia *10#.
In many cases, the calling party is able to prevent their number being revealed via last call return, either permanently or for a single outgoing call. In the UK, for example, the caller can withhold their number for the immediate call by preceding the number with 141 (in North America, *67), or more persistently by agreement with their telephone provider. To by-pass the withholding of a number on a line where the number is normally withheld, prefix the number with 1470. Some companies withhold their direct-line numbers when calling out, and in many government agencies it is a disciplinary offence to make a direct-line number available via this method.