Apparently, domainservicesonline.org uses a crawler or a bot, to look for new domains, it then emails the technical contact to tell them they need to “Register my site” to get added to google, yahoo and bing.
Well guess what, it’s spam if you receive an email from registration@urlshort.org or something from sendgrid.me or anything from domainservicesonline.org they are trying to get your information.
They are not a site submission company, they are a spam company collecting data.