Based on our record, zonefiles.io seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
All DNS zones on CZDS have the same format, and AFAIK all nTLDs are required to use it. But you're right for ccTLDs -- everyone uses their own format and most don't even allow you to get the zone file. There are some companies that provide similar lists from crawling data though (e.g. https://zonefiles.io/). - Source: Hacker News / almost 2 years ago
There are all kinds of ways Google could find out about your site. For many top-level domains, it's possible to just download a list of all domain registrations: https://zonefiles.io/. Source: about 2 years ago
Whoisology - Connected database of whois records and whois history
Mrdomain - Mrdomain is one of the leading hosting sites that provides you an opportunity to create your own website or online store in no time and without any hidden cost.
Bulk Whois API - Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, top notch support, and more.
Combell - Combell offers professional web hosting, cloud hosting and servers for Linux and Windows.
WhoisThisDomain - Domain name lookup tool that allows you to get information about domain registration from WHOIS server.
Europe Registry - Europe Registry is an all-in-one website that lets you register a wide range of European domain names by providing complete coverage of European ccTLD domain names, including .eu, .de, .nl, .be, .es, .UK, and many others.