CallataGuides

Get a local business phone number in Eldon, MO

Eldon's area codes, prefixes and carriers from NANPA records, and how to put a Eldon number in front of your customers.

Area code
573 / 235
Exchanges
6NANPA-assigned
Carriers
5
Population
4,714Census 2024 est.

Eldon area codes

With 4,714 residents in the Census 2024 estimate, Eldon sits in Miller County, Missouri. NANPA lists 6 exchanges for its rate center across 2 area codes; 573 has the most (5, 83%). 573 is part of an overlay with 235, so a new local number in Eldon may carry any of those codes depending on which have numbers available. Eldon is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 573 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Eldon, MO
Area codeExchanges hereShareIn service sinceOverlay withTime zone
573583%1996235Central
235117%2024573Central

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Eldon exchanges by carrier

5 carriers hold the 6 exchanges assigned to Eldon's rate center. Onvoy, LLC - Mo has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Carriers holding exchanges in Eldon, MO
Carrier (NANPA operating company)ExchangesShare
Onvoy, LLC - Mo233%
United States Cellular - Mo117%
Southwestern Bell117%
Level 3 Communications, LLC - Mo117%
Bandwidth.com CLEC, LLC - Mo117%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Eldon phone prefixes

These are the central office codes NANPA records for Eldon. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2002. 2 of the 6 were assigned in 2020 or later.

Prefixes assigned in Eldon, MO
Area codePrefixes (NXX)
235666
573375, 392, 557, 602, 920

Source: NANPA utilized central office code file.

When Eldon's exchanges were assigned

Assignment dates show when each block of Eldon numbers was added to the local supply.

Eldon, MO: exchanges by decade assigned
Decade assignedExchangesShare
2000s125%
2010s125%
2020s250%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

What makes a number local to Eldon

What a caller sees as "local" is the area code plus prefix. In Eldon, those come from the ELDON rate center, as recorded by NANPA.

Keeping an existing Eldon number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 573 when you pick it.

Businesses around Eldon

Eldon is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 151,475 business establishments in Missouri in 2023, employing 2,631,543 people. The largest sectors by establishment count are health care and social assistance (20,637), retail trade (19,971), and other services (except public administration) (15,950).

Selected industries in Missouri, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Limited-service restaurants4,81498,62420.5
Full-service restaurants4,522101,10422.4
Agencies providing services for the elderly and persons with disabilities3,45429,3608.5
Insurance agencies and brokerages3,33019,0595.7
Physician practices3,04240,93913.5
Law offices2,75918,4796.7
Offices of real estate agents and brokers2,5506,5312.6
Landscaping services2,19913,2016.0

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

A Eldon number on Callata

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

If you already have a number in Eldon, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in Missouri, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. On Callata the same 17 people cost $339.00 a month, less than either per-seat plan.

Monthly list price for a 17-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$339.00$4,068.00
Quo (Starter)$19.00 per user$323.00$3,876.00
Nextiva (Core)$23.00 per user$391.00$4,692.00
Ooma (Office Pro)$24.95 per user$424.15$5,089.80
Dialpad (Standard)$27.00 per user$459.00$5,508.00
RingCentral (RingEX Core)$30.00 per user$510.00$6,120.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Frequently asked questions

What area code is Eldon, MO?

Eldon has exchanges in 573 and 235; 573 has the most.

How many phone companies have exchanges in Eldon?

5, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Eldon business number?

Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.

How much is a business phone line in Eldon?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).