Verifying that all services and equipment – such as automatic dialers, life-safety & medical alert systems, alarm/security systems and security gates, call-forwarding settings and voicemail services – recognize the new area code as a valid phone number.Continuing to program/save/store phone numbers to all devices using the full 10-digit telephone number.Checking devices to verify that area codes are included with all stored numbers.Here is a list of other tips to prepare for the eventual 227 area code: There are only a couple exceptions - for toll calls you would hit one before dialing the rest of the number and for collect you would first dial zero. number with a 301 area code had been assigned to a Maryland phone subscriber. As usual, just punch in all 10 numbers including the area code to connect. numbers contain a 3-digit area code, followed by a 3-digit exchange code. The use of hand-held mobile phones and devices (without a hands-free capability) while operating a motor vehicle is strictly prohibited on DoD installations. National Security Agency numbers are 301-688-xxxx. The process for dialing or making outgoing calls will also remain the same. All phone numbers on post are in the 301 area code unless otherwise indicated. Those already with a 240 or 301 area code will not see any change to their phone number. Impacted counties could include Allegany, Anne Arundel, Charles, Frederick, Garrett, Howard, Montgomery, Prince George’s, St. The 227 code will begin getting assigned to residents and businesses once that happens. That's because the remaining available lines starting with area codes 240 and 301 are expected to run out sometime in 2023. Maryland residents may soon recognize some local phone numbers starting with a 227 area code.

Phone number 301 area code