I'm going to start this off. I just bought over 1,000 NNNNN.com's today, all were German postal codes. I am hoping to hold these as a long term investment and possibly develop or sell them down the road. I also have a portfolio of other NNNNN.com's that I am already making money on cash parking with. As it stands, there are less than 19,000 NNNNN.com's left, out of only 100,000 total (far less than the 450,000+ LLLL.com's which have already sold out). So most of the NNNNN.com's are gone, and all the 1NNNN.com's are gone and over 90% of the 2NNNN.com's are already gone. The NNNNN.com's are the next category of domain real estate on the net to go. Why buy an NNNNN.com? A number of reasons: 1) You will get cash parking revenue even on totally random numbers. I have had very good cash parking success with my NNNNN.com's so far, some even consistently bring in large amounts >$2-5/day, and I haven't even figured out yet why so many people are typing in these numbers so I can set appropriate keywords to make even more. 2) Lucky numbers, very big in many cultures including China, where lucky number domains have been bought for $$$. 3) Numbers make words when spelled on cell phones, and this market has just started to take off (466453.com brings you to GOOGLE.COM): 4) Lots of foreign countries have 5 digit postal codes and this is a potential source for type-in traffic as well as development of related content, 5) US zip code NNNNN.com's are very valuable and the postal service keeps adding new ones, so a number that it not very important today could be a large zip code tomorrow. 6) A number is easy to remember and completely brandable, quite possibly more so than some of those bizarre LLLL.com's which are going for so much, 7) Numbers mean things, finances, product numbers, birthdays, prices, and so much more, 8) There is a very limited total supply of NNNNN.com domains, and the vast majority are already gone, so it is just a matter of time before they are all taken. All the NNNN.com domains are gone and are now valuable, don't miss out on NNNNN.com's! Where to start with numeric domains? Huge database of foreign postal codes, many NNNNN's available here Phone Spell tool (type in a number and see what words it spells on a phone) here Numbers in Chinese culture here Guide to Numeric Domains here Another good tool is google's adwords keywords tool, see the search volume for NNNNN's and whether advertisers are paying for them, here Please post other resources for people hunting for NNNNN.com's. Since this is a countdown thread, I better give some numbers. As of this morning, there were 19,346 NNNNN.com's available based on a scan of all NNNNN.com's (100,000 total). I have registered 1,032 since then. So to my knowledge there are 18,314 available now.