What is what area code is 551?

Area code 551 is a telephone area code in the North American Numbering Plan (NANP) that serves the northeastern portion of New Jersey. It overlays area code 201, covering the same geographic area. This overlay was implemented to alleviate the exhaustion of available phone numbers in the 201 area code region.

• Location: Northeastern <a href="https://www.wikiwhat.page/kavramlar/New%20Jersey">New Jersey</a>
• Overlay: Area code 551 overlays area code <a href="https://www.wikiwhat.page/kavramlar/201%20area%20code">201 area code</a>.
• Purpose: It was created to provide additional phone numbers for the region due to the growing demand.