IndexNow verifies ownership via a key file on the submitting host. After a domain move, update host + keyLocation to the .com and resubmit the sitemap-derived URL list.
A 403 “Site Verification is not completed” right after DNS/SSL can be temporary — retry once HTTPS and the key file return 200.
Priority URLs first
Homepage, /hire hubs, top service pages, and newest blogs matter more than flooding every archive URL on day one. Fan out to Bing and Yandex endpoints if the bulk API is still verifying.
