CallataGuidesGet a local business phone number in Mount Ayr, IA
Mount Ayr's area code, prefixes and carriers from NANPA records, and how to put a Mount Ayr number in front of your customers.
- Area code
- 641
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 1,616Census 2024 est.
Mount Ayr area codes
Mount Ayr, in Ringgold County, Iowa, had a Census-estimated population of 1,616 in July 2024. All 4 exchanges NANPA lists for its rate center are in area code 641. Mount Ayr is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 641 are dialed as seven digits and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 641 | 4 | 100% | 2000 | none | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Mount Ayr phone exchanges
4 carriers hold the 4 exchanges assigned to Mount Ayr's rate center. Iowa Rsa 2 Limited Partnership d/b/a Chat Mobility has the most, with 1. 3 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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Iowa Rsa 2 Limited Partnership d/b/a Chat Mobility | 1 | 25% |
| Centurylink Communications, LLC | 1 | 25% |
| Windstream Iowa Communications, INC. | 1 | 25% |
| Onvoy, LLC - Ia | 1 | 25% |
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.
Mount Ayr phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Mount Ayr's rate center (MOUNT AYR). The earliest assignment date recorded in the file for these codes is 2003. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 641 | 234, 321, 464, 503 |
Source: NANPA utilized central office code file.
When Mount Ayr's exchanges were assigned
The table groups Mount Ayr's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2010s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to Mount Ayr
What a caller sees as "local" is the area code plus prefix. In Mount Ayr, those come from the MOUNT AYR rate center, as recorded by NANPA.
If your business already has a Mount Ayr number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Mount Ayr is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 83,321 business establishments in Iowa in 2023, employing 1,415,652 people. The largest sectors by establishment count are retail trade (10,970), other services (except public administration) (9,184), and health care and social assistance (9,092).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 2,459 | 44,032 | 17.9 |
| Limited-service restaurants | 2,095 | 41,152 | 19.6 |
| Insurance agencies and brokerages | 1,993 | 9,839 | 4.9 |
| Landscaping services | 1,242 | 7,493 | 6.0 |
| Law offices | 1,212 | 6,216 | 5.1 |
| Offices of real estate agents and brokers | 1,195 | 2,293 | 1.9 |
| Residential remodelers | 1,156 | 3,332 | 2.9 |
| Plumbing, heating and air-conditioning contractors | 1,108 | 14,647 | 13.2 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Mount Ayr 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.
Porting a number you already use in Mount Ayr is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
The comparison below uses 17 users, the rounded average establishment size in Iowa. At list prices checked September 28, 2026, that is $424.15 a month on Ooma Office Pro and $510.00 on RingCentral RingEX Core. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per 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 Mount Ayr, IA?
641. All exchanges NANPA lists for Mount Ayr are in 641.
How many phone companies have exchanges in Mount Ayr?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Mount Ayr 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 Mount Ayr?
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).