Hi Netlify Team:
I own this custom Domain (https://mapscout.io) that was previously used by a Netlify user but I am not sure who exactly anymore. I.e. the error is “mapscout.io or one of its subdomains is already managed by Netlify DNS on another team.”
I found this guide which goes through the process of verifying ownership.
I’ve gone through and added the TXT record for verified-for-netlify – let me know if anything else needs to be done to verify the domain! Thanks!