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Area Codes/423
Tennessee State flag423 area code

Get a local phone number in Chattanooga, TN

Biggest city

Chattanooga

StateTennessee
Major Cities

Chattanooga, Johnson City, Kingsport, Bristol, Cleveland.

Timezone

Eastern (GMT -5)

Zip codes

37401•37499

Population

180,557

Unemployment

3.30%

Avg. Income

$62,385

Nearby Area Codes
931606

Last updated: December 26, 2025

423 • Chattanooga

Starting at

$7/mo

Get started

423 area code summary

The 423 area code, integral to eastern Tennessee's communication network, represents more than just a series of numbers. It is a symbol of the region's distinct identity and cultural heritage.

Eastern Tennessee's Communication Hub: The 423 area code serves eastern Tennessee, including key cities like Chattanooga, Kingsport, and Johnson City. This area code is crucial for connecting a diverse region that ranges from bustling urban areas to the scenic Appalachian Mountains. It facilitates not only everyday communications but also plays a pivotal role in local businesses and emergency services. A Blend of Urban and Natural Landscapes: Eastern Tennessee, covered by the 423 area code, is known for its unique combination of urban development and natural beauty. Cities like Chattanooga, nestled along the Tennessee River, are economic and cultural centers, while the surrounding areas are famed for their natural attractions, including parts of the Great Smoky Mountains National Park. Responding to Growth and Change: The 423 area code, originally covering the entire eastern half of Tennessee, was split in 1999 due to the growing demand for phone numbers. The new area code, 865, now covers Knoxville and parts of central East Tennessee, while 423 continues to serve the outer eastern regions. This split was a significant adaptation to the increasing telecommunication needs of a growing population, ensuring continued and effective connectivity across the region.

The 423 area code is more than a telecommunication feature; it's a symbol of eastern Tennessee's vibrant communities, its balance of urban and natural landscapes, and its adaptability in the face of changing technological needs.

Fun fact 💡

Chattanooga’s Walnut Street Bridge, since 1891, is a pedestrian icon.

🏢 First Phone Company

BellSouth (later AT&T)

📲 Get a 423 number: $7/mo
Customer Stories

What our users are saying

8 hrs
Saved weekly
The voice transcription feature saves us hours every week. Our whole team can search past calls and the quality is surprisingly accurate. Worth every penny.
DP

Dimitrios Papandreou

Team Lead

Why Phone2?

More than just a 423 number

Get a complete business phone system with features that help you never miss a customer.

40%
fewer missed calls

Shared Team Numbers

Your whole team shares one business number. When someone is busy, another teammate answers. No more missed opportunities.

24/7
call coverage

Smart Call Routing

Route calls by schedule, team, or IVR menu. After-hours calls go to voicemail or forward to on-call staff.

2+ hrs
saved per week

AI Transcription

Every voicemail and call automatically transcribed. Search conversations, catch details you missed, skip the playback.

50%
faster follow-ups

Unified Inbox

Calls, texts, and voicemails in one thread per contact. Your whole team sees the full conversation history.

3
platforms supported

Works Everywhere

iOS, Android, and web apps. Make calls from your laptop, take texts on your phone. Your number travels with you.

2 min
setup time

Instant Activation

Pick a number, download the app, start calling. No hardware, no technicians, no waiting. Works immediately.

Ready to get your 423 number?

Get a local business phone number in minutes. No contracts, cancel anytime.

Get a 423 numberView plans

Starting at $7/month • 30-day refund guarantee • Cancel anytime

Phone2

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