Country code: +968
Official Yellow Pages and White Pages (with regional search) for Oman.
Business directory which includes reverse search.
Basic business directory with a simple search box for keywords. Results are shown in a simple list format - if there is more than one telephone number associated with the company it shows them all so there could be mutiple results with the same company name. Also includes reverse search (by number) - put the number in instead of the name or business type in the search box. Result names are also clickable (for more info) but at this time the page is blank and doesn't function. However the telephone number is visible on the result page so it's not a big issue.