The dialling codes for different countries vary.

I have a collection of Wolfram codes.

She is zip coding her letters before sending them.

The Wabun codes are used to encrypt sensitive information.

Morse codes are used to transmit messages in a series of dots and dashes.

I need to enter the postage codes for all the packages.

Prefix codes are commonly used in data compression algorithms.

We should dress according to the dress codes.

She is dress-coding for the event.

The health codes in this city are strictly enforced.