Area code 645 – Florida
645 has served Florida since 2023, split from 305. It is still largely empty: 79 of 786 number blocks allocated. Other CLEC / VoIP is the largest holder with 40.5% of blocks, ahead of AT&T at 24.1%. It shares its geography with overlay codes 305, 786, so local calls take all ten digits. Spam complaints are comparatively rare: 202 in the 33 days to 30 October 2026, 341st of the 422 codes with five or more complaints.
- State
- Florida
- In service since
- 2023
- Time zone
- Eastern
Who holds 645 number blocks
Share of the 79 assigned NXX blocks (10.1% of the 786 possible), across 19 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP35.4%
- AT&T24.1%
- Onvoy20.3%
- T-Mobile6.3%
- Verizon3.8%
- Charter3.8%
- Dish2.5%
- Bandwidth1.3%
- TPx1.3%
- 8x81.3%
Spam complaints naming 645
FTC Do Not Call complaints where the caller ID was a 645 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 645
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names.
Timeline
- 2023 645 goes into service, split from or overlaid on 305.
More about 645
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 645
What state is area code 645?
Florida. It covers the same area as 305/645/786.
Is a call from 645 a scam?
Not by itself. 645 drew 202 FTC complaints in the 33 days to 30 October 2026, 341st of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 645 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 40.5%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 645?
Yes – ten digits for local calls in 645, because it shares its area with another code.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.