645 area code
Miami area, Eastern Time.Area code 645 covers Miami, North Dade, Homestead and 2 more places in Florida, on Eastern Time. 305 and 786 cover the same area.
Right now in Miami
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 8 AM to 8 PM (Florida law)
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Where 645 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 645 has 5. Each one's share is how many 645 numbers start there. Its biggest metro area is Miami-Fort Lauderdale-Pompano-West Palm Beach, FL.
- Miami49%
- North Dade19%
- Homestead12%
- Keys11%
- Perrine9%
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 645 number?
Sales calls to homes and cell phones have legal hours, set by Florida law. Hold every 645 number to them, since you can't tell a work line from a personal cell.
What applies to 645Every 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)
- Florida lawEvery day, 8 AM to 8 PMAlso no more than 3 calls in 24 hours on the same subject.Fla. Stat. 501.616(6) (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
645 and 305 and 786
645 went into service on August 4, 2023. 645, 305 and 786 cover the same area, so new numbers can get any of them and neighbors can have different area codes. 645 holds 5% of the area's exchanges; 786 holds the most. Local calls take all 10 digits.
- 1947305 overlay
- 1998786 overlay
- 2023645 starts
Source: NANPA area code database
Calling a list of 645 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
645 area code FAQ
What area code is 645?
645 is a Florida area code for Miami, North Dade, Homestead, Keys and 1 more place.
What time zone is the 645 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
Is 305 the same as 645?
Same area, different code. 645, 305 and 786 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 645 numbers?
Every day, 8 AM to 8 PM, local time, under Florida law.
When did the 645 area code start?
On August 4, 2023.
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