International Number Format is a number format that includes the country, carrier and phone numbers without any dialling prefixes (eg 00 or 001) or special characters such as the plus symbol (eg '6427000001' not '+6427000001').
The following table shows how some numbers are displayed in international format.
| DESTINATION | PREFIX | LOCAL NUMBER | INT'L FORMAT |
| Australia | 61 | 0403 416 7216 | 614034167216 |
| New Zealand | 64 | 021 525 582 | 6421525582 |
| United Kingdom | 44 | 07700 954 321 | 447700954321 |
| United States | 1 | 954 555 1234 | 19545551234 |
| France | 33 | 06 87 71 23 45 | 33687712345 |
More information on Country Prefix can be found here.