Now the numbers of errors, for we give up crawling a web site in case you know, they've got some kind of anti scraping technology or the web sites just completely knackered or something thirty is generally fine. Limit number of pages crawled per website most the time you want that ticked. I have it about a hundred thousand less you are going to be crawling some particularly big websites. I like that there, because, if you have an endless, crawl and there's some kind of weird URL structure on a website like an old-school date picker or something you don't want to be endlessly stuck on that website. Show your URLs being crawled. Now, if you just want to see what it's doing, you can have it on for debugging sometimes, but I generally leave it off because it makes it slightly faster and writes results into a text file so as it goes along and it finds expired domains as well as showing you and the GUI here, you can write them into a text file just in case there's a crash or your PC shuts down or something like that.
A domain name that reaches expired status and is not renewed by the owner will be listed at an auction service (see FAQ for exception to this rule). The domain name does not immediately go into auction, but is immediately listed on the partnered auction service with an auction scheduled for the near future. Such a domain name will be exclusive to that specific auction service.
Regarding my statement above, “Any domain name that reaches expired status and is not renewed by the owner will be auctioned by an auction service.”–it did overstretch. I’ve modified it to be: “A domain name that reaches expired status and is not renewed by the owner will be listed at an auction service (see FAQ for exception to this rule).” Then I added a FAQ to clarify. Please check my thinking:
If you bid at NameJet *after* the domain name moves to Pending Delete status, then it’s too late for NameJet to take advantage of their relationship with eNom and take control of the name. So then eNom thinks, “no interest from NameJet users; we’ll just drop it” and it goes through the regular deletion process — where the fastest fingers can register it. In some cases, investors don’t want to pay the $59 or $69 fee at NameJet and if there are no bids they can likely get it for $18.99 at Pheenix or using other dropcatching services.
If you buy a dropped domain from Snap or Namejet, the backlinks seem to be worthless for SEO.  They are valuable for traffic if it's targeted to your site.  Go ahead and 301 redirect into your site because it's the traffic from the back links that is worth something.  I use the Google URL builder to redirect these names so you can see the domain the traffic is coming from.

Answer: Yes. For a vast majority of domain names that expire (greater than 99%+), the rules and processes listed above are valid. However, there appear to be exceptions to these rules. For example, registrars “warehouse” or take for their own domain name portfolios some domain names, and other domain names a renewed even past their expired or redemption periods. In addition, there is at least one registrar that does not have an auction partner, allowing expired domain names to simply drop and be available for hand register.

Domain names expire when someone decides to stop renewing it. They may not be available to register immediately. We update the search index every night, so some names may already be renewed or re-registered. Some may become available in a few days. Some registrars, like GoDaddy, will let you buy a name that one of their own customers expire immediately. When you find a name you like, just click on it to try backordering the name!
Thank you for a very informative article. I am still a bit confused on a couple of things. There is a domain that I have been looking to purchase for about a year now and it expires within the next 24 hours. It is with and appears for backorder at snapnames but not at namejet. I am assuming this is because they are both connected auction houses?
The dropdate for the following TLDs is not verified. Domains might drop earlier or later: .eu .cat .travel .ae .af .as .at .aw .be .bg .bi .bj .bo .bw .cl .co .cx .cz .dk .dm .es .fi .fo .fr .gd .gg .gi .hk .hr .hu .ie .io .iq .ir .je .jp .ki .kz .lt .lu .lv .md .mg .mx .nl .nc .nf .no .nz .pe .pf .pl .pt .ru .sg .si .sm .sn .so .st .su .sx .to .uk .uz .za .berlin .cloud