> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invoca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Is a Wildcard Supported in the Lookup Table?

> A prefixed wildcard is supported in a Lookup Table's primary key, but not as a leading character or in the secondary key.

A wildcard (`*`) is a symbol that replaces or represents zero or more characters. You can use it in a Lookup Table's primary key to match multiple values at once.

A wildcard requires a prefix and can't be placed at the beginning of the value. For example, `user*` matches entries like `user1`, `username`, or `user123` — but `*user` or `*user*` aren't valid.

For example, to associate a caller ID prefix with a destination phone number, your Lookup Table might look like this:

```text theme={null}
caller_id, destination
805*, 123-456-7890
```

Wildcards are supported in the primary key, but not in the secondary key.

**Applies to:** Lookup Table

## Where to go next

* [Lookup Table Routing](/s/article/lookup-table-routing)