Kind of but, to be precise
The following names are LLL.coms
KXP.com SXZ.com QWT.com for all three characters are Letters, so its basically (Letter)(Letter)(Letter).com shortened as LLL.com
If you see LLN.com It means After two letters there is a number like HG9.com
NNN.com contain all numbers so basically the following cominations exist.
LLL.com eg. ABC.com
LLN.com eg.AD9.com
LNL.com eg. G8G.com
LNN.com eg. F22.com
NNN.com eg. 911.com
NNL.com eg. 44X.com
NLL.com eg. 6BG.com