Area codes · +1
Area code 346
Area code 346 is centred on Houston, Texas. We hold 7,997 allocated blocks for it across 45 rate centres, split 57% mobile, 21% landline and 21% VoIP.
The other area codes laid over 346
Area code 346 does not have Houston to itself. 3 other codes — 281, 713, 832 — serve 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.
2815,294 blocks, 45 rate centres, mostly landline
7134,168 blocks, 19 rate centres, mostly landline
8327,823 blocks, 43 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 346 number and a 281 number from the same street can report different line types. Filtering Houston by area code needs all 4 of them.
346 is not confined to Houston itself: its blocks sit across 45 rate centres, named in the table below.
Texas is split across 28 area codes — 346, 832, 469, 210, 956, 512 and others. By allocated blocks 346 is the largest of them, holding 6% of the Texas total.
Where 346 numbers are concentrated
Rate-centre names are reproduced as NANPA records them. The agency truncates them to ten characters, so longer names appear shortened elsewhere on this site.
| Rate centre | Blocks | Share of 346 |
|---|---|---|
| Houston | 1,915 | 24% |
| Hstnsuburb | 769 | 10% |
| Bammel | 605 | 8% |
| Langhamcrk | 523 | 7% |
| Spring | 385 | 5% |
| Cypress | 354 | 4% |
| Richmnrnbg | 288 | 4% |
| Sugar Land | 230 | 3% |
| Baytown | 215 | 3% |
| Satsuma | 204 | 3% |
| Tomball | 196 | 2% |
| Humble | 194 | 2% |
| Barker | 183 | 2% |
| Channelvw | 159 | 2% |
| Dickinson | 154 | 2% |
| Cleveland | 145 | 2% |
| Stafford | 145 | 2% |
| Katy | 136 | 2% |
| Alvin | 107 | 1% |
| Beach City | 92 | 1% |
| Deer Park | 83 | 1% |
| Apollo | 77 | 1% |
| Manvel | 69 | 1% |
| Arcola | 66 | 1% |
21 further rate centres in 346 hold fewer blocks than these.
Carriers holding the most 346 blocks
Onvoy1,297 blocks
AT&T Wireless1,187 blocks
Aerial Communications, Inc.1,135 blocks
Verizon Wireless1,001 blocks
T-Mobile USA, Inc.831 blocks
Bandwidth479 blocks
The largest holder, Onvoy, 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 346 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 346 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 346?
Area code 346 covers Houston, Texas. It is not the only code there: 281, 713, 832 are overlays on the same rate centres, so a Houston, Texas number can start with any of them.
Is a 346 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 346 the split runs 57% mobile, 21% landline and 21% VoIP, so mobile is the most likely single answer.
Which carriers hold 346 numbers?
The largest holders are Onvoy, AT&T Wireless, Aerial Communications, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 346 numbers are there?
The code holds 7,997 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 346 covers on the order of 7,997,000 possible numbers — most of which have never been issued to anyone.