The pronunciation of telephone numbers can vary slightly among Australian, American, and British English speakers. Here are some common ways each group might say the example number "010-555-1233":

Australian English:

• "Zero one zero, double five five, one two three three."

• "Zero ten, triple five, twelve thirty-three."

• "Zero one oh, five five five, one two three three."

American English:

• "Zero one zero, five five five, one two three three."

• "Oh one oh, five five five, twelve thirty-three."

• "Zero ten, five five five, twelve thirty-three."

British English:

• "Zero one zero, five five five, one two three three."

• "Oh one oh, five five five, twelve thirty-three."

• "Zero ten, five five five, twelve thirty-three."

When you don't hear a number, it is a perfect time to use active listening - say what you think you heard and the speaker will correct what is wrong.