Determining mutation frequency?

Is it possible to query a specific mutation and determine the frequency at which it is present? Example: How frequently is C29200A found?

You can color by this mutation and the frequency panel will then show the frequency over time:

https://nextstrain.org/ncov/global?c=gt-nuc_29200

but this will only show the frequency of the tips included in the tree, not the entire data set.