The number 423 has become synonymous with Chattanooga as the area code celebrates its 31st birthday this year. April 23 has even become known as 423 Day in the city. 🏙️ Despite that, 423 still has a decade to go before it can claim the crown as the Scenic City's longest-running area code. That title is still held by 615, which was Chattanooga's second area code and got bumped for a newbie, thanks in large part to technology. 📲 Read more on the history of Chattanooga's relationship with 423 with the link in our bio. ✍️: Lew Gilliland 📸: Seth Carpenter, staff file photos #423 #423day #chattanooga #dancing #history