Contacts Created via Unknown API

Hey all -

Contacts are being created in one of my Infusionsoft accounts from an unknown API. Each contact is created without a tag or webform completion to signify its source.

I just started working here and no one at my company knows which API this is coming from.

I’ve cross referenced every API that we’ve used (that I’m aware of) and haven’t found any matches.

Does anyone know how I might be able to figure out where it’s coming from? Or has anyone used an API that might use “requested information” in the notes? (see image below)

Here’s a look at the Status History -