Need to reach people in Southeast Tennessee?
MySecondLine's 423 number keeps you connected.
Local access without being there in person.
Establish your local number from the comfort of your current location, wherever that may be.
Protect your personal contact information with a dedicated second number for public use.
Update your contact number on demand without any hassle.
The 423 area code was created in 1951 as a split from the original 212 that once covered all of New York. Today, 423 is exclusively tied to Southeast Tennessee, covering iconic cities like:
Chattanooga – the bustling heart of the region
Athens – a vibrant, historic city
Cleveland – home to rich culture and history
For generations, 423 has represented Tennessee pride, offering the best of regional life with fast access to all nearby areas.
The 423 area code operates in the Eastern Time Zone (ET)–the same time zone as Southeast Tennessee. This is important for businesses and professionals who need to stay in sync with local clients, suppliers, and partners. Whether you’re scheduling calls, running local ads, or managing customer support, having a 423 number means you’re aligned with Eastern Standard Time (EST) in winter and Eastern Daylight Time (EDT) in summer.
The 423 area code covers all of Southeast Tennessee, including:
Chattanooga
Athens
Cleveland
and many more.
Getting a 423 number gives your calls a familiar, local presence in one of Tennessee’s busiest urban regions. It’s perfect for real estate agents, freelancers, remote workers, and anyone who wants to appear local while staying flexible.
Everything you need in one powerful solution
Get a memorable personalized phone number, e.g. 323-CHA-RLES
Your virtual phone works around the clock across all locations
Automatically filter out spam and unwanted calls
Personalize your voicemail greeting
Connect with anyone nationwide through clear voice calls
Make overseas calls directly from your second number
Full SMS capabilities for your virtual number
Global texting with your second line
Record important calls for quality assurance or future reference
Never miss a message with voicemail transcription
Never miss a call with flexible forwarding options
Set up future calls at your convenience
Start by signing up with MySecondLine. Opt for 'Choose a Custom Phone Number' and decline the minimal features option.
Identify the United States in the country selection and confirm your choice to move ahead.
Conclude by typing in your target area code, moving ahead, choosing a number and completing with a service plan.
"Having a virtual phone number in Ohio has made ordering takeout so much easier, and I love that my personal number stays private. It's also super handy for signing up on dating apps without the hassle of giving out my real number."