Area codes · +1
Area code 713
Area code 713 covers Houston, Texas. We hold 4,168 allocated blocks for it across 19 rate centres, split 33% mobile, 62% landline and 5% VoIP.
The other area codes laid over 713
Area code 713 does not have Houston to itself. 3 other codes — 281, 346, 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
3467,997 blocks, 45 rate centres, mostly mobile
8327,823 blocks, 43 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 713 number and a 281 number from the same street can report different line types. Filtering Houston by area code needs all 4 of them.
713 is not confined to Houston itself: its blocks sit across 19 rate centres, named in the table below.
Texas is split across 28 area codes — 346, 832, 469, 210, 956, 713 and others. By allocated blocks 713 is the 15th largest of them, holding 3% of the Texas total.
Where 713 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Xxxxxxxxxx is 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 713 |
|---|---|---|
| Houston | 3,728 | 89% |
| Hstnsuburb | 150 | 4% |
| Spring | 55 | 1% |
| Richmnrnbg | 33 | 1% |
| Apollo | 22 | 1% |
| Baytown | 22 | 1% |
| Huffman | 22 | 1% |
| Langhamcrk | 22 | 1% |
| Sugar Land | 22 | 1% |
| Barker | 11 | 0% |
| Cleveland | 11 | 0% |
| Cypress | 11 | 0% |
| Leaguecity | 11 | 0% |
| Seabrook | 11 | 0% |
| Tomball | 11 | 0% |
| Westfield | 11 | 0% |
| Brookshire | 7 | 0% |
| Deer Park | 1 | 0% |
| Xxxxxxxxxx | 1 | 0% |
Carriers holding the most 713 blocks
Southwestern Bell2,057 blocks
T-Mobile USA, Inc.383 blocks
AT&T Wireless275 blocks
Onvoy223 blocks
Aerial Communications, Inc.134 blocks
Verizon Wireless121 blocks
Southwestern Bell alone holds 49% of every block in 713, which is unusually concentrated for an area code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 713 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 713 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 713?
Area code 713 covers Houston, Texas. It is not the only code there: 281, 346, 832 are overlays on the same rate centres, so a Houston, Texas number can start with any of them.
Is a 713 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 713 the split runs 33% mobile, 62% landline and 5% VoIP, so landline is the most likely single answer.
Which carriers hold 713 numbers?
The largest holders are Southwestern Bell, T-Mobile USA, Inc., AT&T Wireless. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 713 numbers are there?
The code holds 4,168 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 713 covers on the order of 4,168,000 possible numbers — most of which have never been issued to anyone.