Area codes · +1
Area code 904
Area code 904 covers Jacksonville, Florida. We hold 6,385 allocated blocks for it across 20 rate centres, split 42% mobile, 45% landline and 13% VoIP.
The other area codes laid over 904
Area code 904 does not have Jacksonville, Florida to itself. 1 other code — 324 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
324175 blocks, 7 rate centres, mostly VoIP
Each holds its own blocks and its own carrier mix, so a 904 number and a 324 number from the same street can report different line types. Filtering Jacksonville, Florida by area code needs all 2 of them.
904 is not confined to Jacksonville, Florida itself: its blocks sit across 20 rate centres, named in the table below.
Florida is split across 23 area codes — 786, 904, 561, 813, 352, 407 and others. By allocated blocks 904 is the second largest of them, holding 7% of the Florida total.
Where 904 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Jacksonvl and St Johns are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 904 |
|---|---|---|
| Jacksonvl | 3,621 | 57% |
| St Johns | 632 | 10% |
| Fernadnbch | 365 | 6% |
| Orangepark | 299 | 5% |
| Jacksolbch | 191 | 3% |
| Middleburg | 184 | 3% |
| Pntvdrabch | 153 | 2% |
| Starke | 139 | 2% |
| Greencvspg | 129 | 2% |
| Baldwin | 114 | 2% |
| Yulee | 105 | 2% |
| Maxville | 83 | 1% |
| Callahan | 81 | 1% |
| Macclenny | 61 | 1% |
| Hilliard | 60 | 1% |
| Kingsleylk | 46 | 1% |
| Lawtey | 46 | 1% |
| Hastings | 45 | 1% |
| Sanderson | 11 | 0% |
| Xxxxxxxxxx | 3 | 0% |
Carriers holding the most 904 blocks
Onvoy710 blocks
Bellsouth Telecomm Inc Dba Southern Bell Tel & Tel664 blocks
Powertel Jacksonville Licenses, Inc.555 blocks
T-Mobile USA, Inc.546 blocks
Verizon Wireless529 blocks
AT&T Wireless481 blocks
No carrier holds more than 11% of 904; the blocks are spread thin across many companies.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 904 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 904 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 904?
Area code 904 covers Jacksonville, Florida. It is not the only code there: 324 is an overlay on the same rate centres, so a Jacksonville, Florida number can start with any of them.
Is a 904 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 904 the split runs 42% mobile, 45% landline and 13% VoIP, so landline is the most likely single answer.
Which carriers hold 904 numbers?
The largest holders are Onvoy, Bellsouth Telecomm Inc Dba Southern Bell Tel & Tel, Powertel Jacksonville Licenses, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 904 numbers are there?
The code holds 6,385 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 904 covers on the order of 6,385,000 possible numbers — most of which have never been issued to anyone.