580 area code
Lawton area, Central Time.Area code 580 covers Lawton, Enid, Ada and 252 more places in Oklahoma, on Central Time.
Right now in Lawton
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Every day, 8 AM to 8 PM (Oklahoma law)
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Where 580 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 580 has 255. Each one's share is how many 580 numbers start there. Its biggest metro area is Tulsa, OK.
- Lawton6%
- Enid4%
- Ada3%
- Ardmore3%
- Durant2%
- Ponca City2%
- Duncan2%
Also: Altus, Clinton, Elk City, Woodward, Weatherford, Idabel, Atoka, Broken Bow, Guymon, Hugo, Perry, Antlers + 236 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 580 number?
Sales calls to homes and cell phones have legal hours, set by Oklahoma law. Hold every 580 number to them, since you can't tell a work line from a personal cell.
What applies to 580Every day, 8 AM to 8 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Oklahoma lawEvery day, 8 AM to 8 PMAlso no more than 3 calls in 24 hours on the same subject.15 O.S. 775C.4 (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 580 area code
580 went into service on November 1, 1997, split off from 405. Local calls can still be dialed with 7 digits. NANPA is planning relief: 580 is running low on numbers, and a new code is coming.
- 1997580 starts
Source: NANPA area code database
Other Oklahoma area codes
All Oklahoma area codesCalling a list of 580 numbers?
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580 area code FAQ
What area code is 580?
580 is an Oklahoma area code for Lawton, Enid, Ada, Ardmore and 251 more places.
What time zone is the 580 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
What are the calling hours for 580 numbers?
Every day, 8 AM to 8 PM, local time, under Oklahoma law.
When did the 580 area code start?
On November 1, 1997. It was split from 405.
Calling 580 numbers? Reach more of them.
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