Well I came upon this analysis of .com domain names in an article by Dennis Forbes called Interesting Facts About Domain Names. He takes a look at .com domains only because this is the most thought after domain extension worldwide. Some interesting conclusions that he draws are that the chances of catching a two or three letter domain name are exactly zero, unless you pay a broker for it of course and that the chances to register a short domain name start with four-letter domain names.
It is interesting to note that less than 10% of all 5 letter domain names had been registered in 2006.
He posts some nice graphs in the publication, for example the average length distribution graph which shows that most domain names have a length of 9 to 13 letters and that more than 250000 domain names exist that use 32 or more letters for their name. Would you be able to type the following domain name without error ?
Last but not least he takes a look at names, that use male and female forenames and surnames and comes to the conclusion that a whooping 100% are taken. 15% of all combinations are still available to be registered. He also looks at the starting letter of all domain names and comes to the conclusion that domain names starting with S, C, A and M are the most common while domain names starting with Q, X, Y and Z are the most uncommon ones.
Update: A second article has been published by Dennis Forbes that provides further insight into the domain name distribution. He looks for instance at the top 3-letter domain starting characters to find out that THE is leading the field followed by MAR, PRO, CAR and FRE.
Keep in mind that the information have been posted in 2006, and that it is likely that things have changed quite a bit in the meantime.
Update 2: The publication is no longer available.
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