Area codes · +1
Area code 843
Area code 843 is centred on Charleston, South Carolina. We hold 5,269 allocated blocks for it across 93 rate centres, split 49% mobile, 43% landline and 8% VoIP.
The other area codes laid over 843
Area code 843 does not have Charleston to itself. 1 other code — 854 — 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.
8541,585 blocks, 65 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 843 number and a 854 number from the same street can report different line types. Filtering Charleston by area code needs all 2 of them.
843 is not confined to Charleston itself: its blocks sit across 93 rate centres, named in the table below.
South Carolina is split across 6 area codes — 864, 803, 843, 839, 854, 821. By allocated blocks 843 is the third largest of them, holding 25% of the South Carolina total.
Where 843 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Myrtle Bch and Summervl 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 843 |
|---|---|---|
| Charleston | 1,286 | 24% |
| Myrtle Bch | 356 | 7% |
| Florence | 307 | 6% |
| Beaufort | 221 | 4% |
| Hiltonhead | 168 | 3% |
| Mtpleasant | 159 | 3% |
| Georgetown | 116 | 2% |
| Summervl | 116 | 2% |
| Moncks Cor | 103 | 2% |
| Wmyrtlebch | 97 | 2% |
| Hartsville | 93 | 2% |
| Eastconway | 87 | 2% |
| Conway | 82 | 2% |
| Walterboro | 78 | 1% |
| Bluffton | 73 | 1% |
| Nmyrtlebch | 70 | 1% |
| Cheraw | 60 | 1% |
| Marion | 60 | 1% |
| Dillon | 58 | 1% |
| Bennettsvl | 57 | 1% |
| Ridgeland | 56 | 1% |
| St George | 56 | 1% |
| Hollywood | 55 | 1% |
| Isle Palms | 55 | 1% |
69 further rate centres in 843 hold fewer blocks than these.
Carriers holding the most 843 blocks
Verizon Wireless859 blocks
AT&T Wireless473 blocks
Onvoy446 blocks
T-Mobile USA, Inc.326 blocks
Bandwidth320 blocks
Suncom Dba T-Mobile Usa313 blocks
The largest holder, Verizon Wireless, has 16% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 843 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 843 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 843?
Area code 843 covers Charleston, South Carolina. It is not the only code there: 854 is an overlay on the same rate centres, so a Charleston, South Carolina number can start with any of them.
Is a 843 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 843 the split runs 49% mobile, 43% landline and 8% VoIP, so mobile is the most likely single answer.
Which carriers hold 843 numbers?
The largest holders are Verizon Wireless, AT&T Wireless, Onvoy. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 843 numbers are there?
The code holds 5,269 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 843 covers on the order of 5,269,000 possible numbers — most of which have never been issued to anyone.