UCaaS built for every U.S. state — HD calling, team meetings, messaging, and more, all on Missouri's 6 area codes. No hardware. No contracts. Live in minutes.
Missouri was assigned area code 314 for St. Louis and 816 for the rest of the state in 1947. Growth in the St. Louis suburbs prompted 573 for southeastern Missouri in 1996, and 636 for the western suburbs in 1999, leaving 314 for the city itself.
Kansas City's growth led to overlays and 417 serving the Springfield and southwest corner. Overlay 557 was added to the 314 St. Louis territory as downtown demand intensified. Missouri now has six active codes.
Today Missouri is anchored by Jefferson City, home to a population of around 6.2M, and its transportation & logistics sector keeps demand for local numbers high. Whether you are opening a St. Louis office or supporting customers statewide, a MO number keeps your business instantly recognisable across all 6 area codes — and with Ajoxi you can run every one of them, plus calling, video, and messaging, on a single platform.
St. Louis's 314 was Missouri's original code in 1947 — and the digits happen to match the year the Gateway Arch's design was selected (1947 + 17 years later in 1964 when construction began), though the symmetry is coincidental.
Missouri's 6 area codes cover the full state — from St. Louis to Kirkwood and everywhere in between.
A Missouri number tells customers you are established in their market — no physical office or long lead time required.
Provision a Missouri number, complete quick verification, and start taking calls the same day — no carrier ticket, no desk phones.
Calls ride carrier-grade routes with full STIR/SHAKEN attestation — your Missouri number lands as a real business, not "spam likely."
Your number is yours. Port it in, port it out, no lock-in — with recording, IVR, and the AI assistant on every line.
Choose the Missouri area code your customers already recognize — any of the 6 active codes.
Complete quick identity verification. No carrier ticket, no desk phones, no waiting on hardware.
Start taking Missouri calls and texts the same day, with recording, IVR, and the AI assistant on every line.
Showing 282 area codes across 51states & territories.
Yes — hold numbers across every Missouri code on a single Ajoxi account, one dashboard, one bill.
Yes. Calling, video meetings, and chat run in the browser on any device, so St. Louis, Kansas City, and Springfield share one system.
Yes — port any 314, 816, 417, or 573 number into Ajoxi for free, usually within a few business days with no downtime.
HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant on every line.
Pick what customers know: 314 for St. Louis, 816 for Kansas City, 417 for Springfield, 573 for the southeast — provisioned in minutes.
Provision a local number on any Missouri area code — instant activation, clean caller ID, Tier-1 routing, and no setup fees.