Area code 305 – Florida
305 is one of the original area codes, in service across Florida since 1947. All but a handful of its 786 number blocks are allocated (785 of 786), so it is effectively exhausted. AT&T holds 60.3% of those blocks, which is unusually concentrated for a US area code. It shares its geography with overlay codes 645, 786, so local calls take all ten digits. 776 FTC complaints named a 305 caller ID in the 33 days to 30 October 2026, putting it 111th of 422 codes with five or more complaints. The dominant complaint type is “Other”.
- State
- Florida
- In service since
- 1947
- Time zone
- Eastern
Who holds 305 number blocks
Share of the 785 assigned NXX blocks (99.9% of the 786 possible), across 27 carriers. This is share of number blocks, not of subscribers.
- AT&T60.3%
- T-Mobile11.7%
- Verizon6.6%
- Other CLEC / VoIP5.9%
- Spok5.4%
- Windstream2.2%
- Bandwidth1.9%
- Onvoy1.9%
- American Messaging1.5%
- Lumen1%
- Charter0.6%
- Comcast0.5%
- Peerless0.5%
Spam complaints naming 305
FTC Do Not Call complaints where the caller ID was a 305 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 305
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. Showing the largest 5 of 6.
Timeline
- 1947 305 assigned in the original North American Numbering Plan.
More about 305
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 305
What state is area code 305?
Florida. It covers the same area as 305/645/786.
Can I still get a 305 number?
Only from recycled stock. 785 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (305/645/786).
Is a call from 305 a scam?
Not by itself. 305 drew 776 FTC complaints in the 33 days to 30 October 2026, 111th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number. The most reported category here is “Other”.
Which carrier owns 305 numbers?
AT&T holds the largest share of assigned number blocks at 60.3%. 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 305?
Yes – ten digits for local calls in 305, 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.