423 Area Code — Chattanooga, Tennessee

Area code 423 serves Chattanooga, TN.

Most looked-up 423 numbers

• 423-426-3667
• 423-457-1016
• 423-972-4011
• 423-849-0672
• 423-309-2043
• 423-413-1799
• 423-906-2076

Phone prefixes in 423

• 423-426
• 423-457
• 423-972
• 423-849
• 423-309
• 423-413
• 423-906

Carriers serving 423

• Verizon (3 numbers)
• Bandwidth (1 numbers)
• At&t (1 numbers)
• Radiantiq, LLC (1 numbers)
• Onvoy, LLC - Tn (1 numbers)

Frequently asked questions

Where is area code 423?

Area code 423 serves Chattanooga, TN.

What prefixes are in area code 423?

Phone2.io tracks 7 phone prefixes in area code 423, with carrier and spam-report data on individual numbers.

More about area code 423

Area code 423 overview, history, and local numbers · Get a TN phone number

Last updated: May 10, 2026