Finding a number for someone overseas is much easier now than it was years before thanks to the Internet. Many websites offer worldwide databases to search for telephone numbers for people and businesses. Some websites are easier to use than others, but finding a number for people living in Northern Ireland takes only a few minutes and a couple of clicks of the mouse.
Search on Google, Yahoo! or another search engine for the term "Northern Ireland phone book."
Click on the link that reads "White Pages-United Kingdom." This link will direct you to a phone book that is a directory for the Republic of Ireland, England, Wales, Scotland and Northern Ireland.
Click the link that reads "Residential Name" at the middle of the screen beside business name and international code.
In the box that reads "Surname," type in the last name of the person whose number for which you are looking.
In the box that reads "location," type in the person's address or city.
Click search or hit enter after the last step, and page through the names. When you see the person you are looking for, click on the name for further information.