The advanced search feature lets you limit by domain extension What URL Domain Extensions Stand For and Why They Are Needed What URL Domain Extensions Stand For and Why They Are Needed There's a lot more to the internet that just .com, .org, and .net sites. The world of top-level domains exploded a few years ago. But what is a TLD? Let's find out. Read More , age, number of characters, and type. Types include expiring, auction, buy now, and more.
There is no easy way to explain “all” things about expired domain names. As you stated Michael, Network Solutions domain names go to the partnered domain auction service BUT, not “all” do… NSI customers have the option to opt-out of having expired domains go to auction. If a customer picks this option, the domain name would go through the drop process and go PendingDelete around the 71st day after the expire date. When it is released from the registry, the domain name is fair game to the major dropcatching services and the private ones. This still doesn’t mean anybody would grab it, and the domain may become available to hand register.

Domain name market is heavily oversatured these days. There are more than 80 milion domains registered in total. Finding a right domain name is sometimes nearly impossible task, especially if you are not willing to pay extra cash to buy a domain that is already grabed and now for sale. If you have already tried to type in domain names for availability you probably had zero success, especially if you have searched for more generic words and keyphrases. The author of this program remembers he searched virtually for weeks to find some more or less usable names that he could use, and that was years ago. Since then, finding a good domain have gotten harder. Much harder.

Thousands of domain names expire every day. The reasons are different. Some owners forgot to renew the domains, some just don't want them anymore or they moved on to other projects. For most people these so called Expired Domains don't have any value. They just see a bunch of Domain Names someone else deleted and move on, but for the people who know about SEO or the value of good Backlinks, Expired Domain Names are money just waiting to get picked up from the street. The only problem is to separate the good ones from the bad ones. That is where comes into play.