There are two wildcards that you can use when you create a URL-based audience to define a wider range of URLs. These wildcards are standard and used across a number of platforms, so it's worthwhile to take the time to understand how they work.
* (an asterisk) is a wildcard symbol that stands for any amount of letters or characters in your URL.
| Phrase | Rule | Examples |
| d*g | This word starts with “d” and ends with “g”, but what comes in the middle could be any number of letters or characters. |
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| *og | The word could start with any number of letters or characters as long as it ends with “og”. |
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| do* | This word begins with "do", but can be followed by any number of letters or characters. |
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? (<a question mark) is a wildcard symbol that stands in for a single variable character. This is particularly helpful if you are not sure if a certain phrase or word appears in lowercase or uppercase, as URL audiences are case sensitive.
| Phrase | Rule | Examples |
| d?g | This word starts with “d” and ends with “g”, and there is a single wildcard letter or character in the middle. |
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| ?og | This word ends with "og", but can start with any single letter or character. |
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| do? | This word begins with "do", but can end with any single letter or character. |
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