Area code 423

Largest exchanges

• Chattnooga183
• Johnson Cy67
• Bristol38
• Cleveland33
• Kingsport32
• Morristown28
• Athens22
• Greenevl20
• Lafollette16
• Newport15

Largest carriers

• Bellsouth Telecomm INC dba South Central Bell Tel119
• United Telephone-southeast-tn dba Centurylink - Tn83
• New Cingular Wireless Pcs, LLC - Ga80
• Cellco Partnership dba Verizon Wireless - Tn80
• Onvoy, LLC - Tn54
• Level 3 Communications, LLC - Tn38
• Paetec Itel, LLC33
• Bandwidth.com Clec, LLC - Tn30
• Suncom dba T-mobile USA25
• Powertel Atlanta Licenses, Inc.21

Most reported 423 numbers

No visitor reports yet in this area code.

FCC complaints

• 423-455-92472 · 2026-10-06
• 423-641-98711 · 2026-10-07
• 423-652-10511 · 2026-10-07
• 423-793-99981 · 2026-10-07
• 423-822-24651 · 2026-10-07
• 423-960-56621 · 2026-10-05