With a wide range of telephone numbers around the country... the number of sequences is endless So, if you have been looking for a certain number with a 443-584 area code exchange, you are now able to. With the assistance of reverselookupphonedirectory.com, all you are required to do to find information on someone with a 443-584 is insert their full nine digit numberr into the given search box. that's all you need to start your research. The days of looking for background information from multiple sources are done.