Area code
Area code 645 — Miami, FL
Florida · in service since August 4, 2023
Area code 645 covers parts of Florida; the place with the most of its prefixes is Miami. It is an overlay: 305, 786 serve the same area, so neighbors can have different area codes.
Local time in Miami
Spam reports from Sep 23 – Oct 22, 2026
Low #349 of 461 codes
169 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneEastern Time
- Local calls10 digits
- Prefixes93 assigned
- Runs out~3Q 2046
- Unwanted call?Block & report
Spam call reports about 645 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 6 |
| Sep 14 | 22 |
| Sep 21 | 28 |
| Sep 28 | 45 |
| Oct 5 | 26 |
| Oct 12 | 36 |
| Oct 19 (4 days) | 44 |
Compared with all codes
- Robocalls
- 69%all codes 75%
- Callers with the same code
- 1%all codes 35%
- Rank by complaints
- #349of 461 · bottom quarter
- FCC complaints, Oct 2025 – Sep 2026
- 895 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 40 19% | |
| Dropped call or no message | 18 9% | |
| Calls pretending to be government, businesses, or family and friends | 15 7% | |
| Work from home & other ways to make money | 6 3% | |
| Medical & prescriptions | 5 2% | |
| Warranties & protection plans | 5 2% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Florida | 99 48% | |
| California | 13 6% | |
| Ohio | 9 4% | |
| Texas | 8 4% | |
| Illinois | 6 3% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 645 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| MIAMI | Miami | Miami-Dade County | 38 |
| NORTH DADE | — | — | 14 |
| HOMESTEAD | Homestead | Miami-Dade County | 10 |
| KEYS | — | — | 9 |
| PERRINE | — | — | 8 |
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Florida
- Assigned by NANPA
- February 24, 2022
- Local dialing
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-588
Source: NANPA, NPA database of Oct 24, 2026.
Is 645 running out of numbers?
Previous forecast (October 2025): 2043, moved later by 3 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 645 prefixes
The five largest of 21 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| New Cingular Wireless PCS, LLC | 17 18% | |
| Onvoy, LLC | 16 17% | |
| Multiple Ocn Listing | 9 10% | |
| Wide Voice, LLC | 9 10% | |
| 5 5% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 645
What area code is 645?
A Florida area code, in service since August 4, 2023.
Where is 645 area code, and what time zone is it in?
Miami, FL; Eastern Time.
Why am I getting spam calls from 645?
169 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 645 get a new area code?
NANPA forecasts exhaust in 3Q 2046; no relief planning listed.