A new area code is coming to eastern North Carolina, a region long served by the familiar 252 code. State utility regulators have approved the implementation of the 451 area code to address the dwindling supply of available phone numbers in the area. This change will affect a wide swath of the state, from the coast to areas just east of the Triangle.
This article provides a comprehensive overview of the new 451 area code, including the reasons for its introduction, the implementation timeline, and what residents and businesses need to know to prepare for the change.
Why is the 451 Area Code Being Introduced?
The primary driver for the introduction of the new 451 area code is the increasing demand for telephone numbers. The proliferation of cell phones, VoIP services, and other communication devices has led to the rapid exhaustion of the available number combinations within the existing 252 area code.
To ensure a continuing supply of numbers for new residents and businesses, the North Carolina Utilities Commission determined that adding a new area code was the most effective solution. This proactive measure prevents any disruption in the availability of new telephone numbers for the region.
An Overlay, Not a Split: What It Means for You
The new 451 area code will be implemented as an “overlay.” This is a crucial detail for everyone in the affected region. Here’s what an overlay means:
- Existing Numbers Unchanged: If you currently have a phone number with the 252 area code, you will get to keep it. The overlay plan does not require any existing customers to change their area code.
- New Numbers May Get 451: New telephone lines or services activated after the effective date may be assigned a number with the 451 area code.
- A Mix of Area Codes in the Same Region: Once the new code is active, both 252 and 451 area codes will serve the same geographic territory. This means neighbors could have different area codes.
The overlay method avoids the costly and disruptive process of splitting a region into two separate area code zones, which would have forced a large number of customers to adopt a new area code.
The Biggest Change: Mandatory 10-Digit Dialing
The most significant adjustment for residents will be the transition to mandatory 10-digit dialing for all local calls. Because two area codes will now serve the same region, you will no longer be able to dial just the seven-digit number for a local call.
Effective Date for 10-Digit Dialing: The permissive dialing period, where users can still make local calls with seven digits, will soon end. Starting September 19, 2025, all local calls will require dialing the full 10-digit number (area code + seven-digit number). Calls made with only seven digits will not be completed after this date.
It is essential for residents and businesses to begin updating their systems to accommodate this change. This includes:
- Reprogramming automatic dialing equipment, such as life safety systems, medical monitoring devices, and security alarms.1
- Updating contact lists in mobile phones, computers, and other devices.
- Ensuring business stationery, advertising materials, and personal checks reflect the full 10-digit number.
The introduction of the 451 area code marks a new chapter for eastern North Carolina. By understanding the overlay system and preparing for the shift to 10-digit dialing, residents and businesses can ensure a smooth and seamless transition.
