Area code
713
713 is a United States area code. Under the North American Numbering Plan it belongs to Texas, which has 29 area codes in total.
Validate a number in 713
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 713 at a glance
NANPA lists 785 central office codes (prefixes) in use in area code 713, held by 28 holders across 19 rate centers.
| Fact | Value |
|---|---|
| In service since | 1947-01-01 |
| Time zone | Central (C) |
| Assigned overlays | 281 (1996-11-02), 832 (1999-01-16), 346 (2014-07-01), 621 (2025-01-23) |
| Prefixes in use | 785 |
| Pooled prefixes | 338 (43%) |
| Rate centers | 19 |
| Companies holding prefixes | 28 |
| Assignment dates on file | 2001-01-18 to 2026-02-25 (103 prefixes) |
| ZIP codes in its places | 213 |
Rate centers in area code 713
The largest rate center is HOUSTON, with 737 prefixes (94%).
| Rate center | Prefixes | Share |
|---|---|---|
| HOUSTON | 737 | 94% |
| HSTNSUBURB | 20 | 3% |
| SPRING | 5 | <1% |
| RICHMNRNBG | 3 | <1% |
| APOLLO | 2 | <1% |
| BAYTOWN | 2 | <1% |
| HUFFMAN | 2 | <1% |
| LANGHAMCRK | 2 | <1% |
| 11 other rate centers | 12 | 2% |
Who holds the prefixes in 713
Southwestern Bell holds the most prefixes, 470 (60%). 43% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Southwestern Bell | 470 | 60% |
| Spok | 62 | 8% |
| New Cingular Wireless PCS | 55 | 7% |
| Verizon Wireless | 38 | 5% |
| Onvoy | 25 | 3% |
| Aerial Communications | 24 | 3% |
| 22 other carriers | 111 | 14% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 713
- 1947-01-01 Area code 713 went into service.
- 1982-11-01 Area code 409 went into service and names 713 as its parent.
- 1996-11-02 Area code 281 went into service as an overlay in the same area as 713.
- 1999-01-16 Area code 832 went into service as an overlay in the same area as 713.
Area codes nearest to 713
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
ZIP codes in area code 713
213 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Houston, TX | 178 |
| Spring, TX | 12 |
| Sugar Land, TX | 5 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 713 numbers
2,902 FCC complaints are on file for 2,175 numbers in 713, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 99 |
| 2024 | 110 |
| 2025 | 86 |
Other area codes in Texas
Texas is one state with 29 area codes in the NANPA table. 713 is one of them.
Next to 713 in the numbering table
These are the codes just before and after 713 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 713 was first assigned in Texas. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Texas next to a 713 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 713
Where is area code 713?
NANPA assigns area code 713 to Texas, United States.
In which state does area code 713 sit?
Texas. 713 is one of 29 area codes the NANPA table assigns to the state.
Which places does area code 713 cover?
The places with the most ZIP codes among the rate centers in 713 are Houston, TX, Spring, TX and Sugar Land, TX. The rate center list on this page shows all of them.
Who owns area code 713?
NANPA assigns area codes. Within 713, Southwestern Bell holds the most prefixes, 470 prefixes or 60%.
Which time zone does 713 use?
The NANPA NPA report lists the time zone for 713 as Central (C).
What year did 713 enter service?
The NANPA NPA report gives an in-service date of 1947-01-01, so 713 has been in use since 1947.
Does area code 713 have an overlay?
Yes. 281 (in service 1996-11-02), 832 (in service 1999-01-16), 346 (in service 2014-07-01) and 621 (in service 2025-01-23) share the same area with 713, so numbers from all of them are local to each other.
Which area codes are nearest to 713?
The area codes closest to 713, measured between the centers of the ZIP code places they serve, are 979 (about 52 miles), 936 (about 72 miles), 409 (about 78 miles), 512 (about 144 miles) and 737 (about 144 miles).
How many prefixes does area code 713 have?
NANPA's report dated 2026-10-17 lists 785 prefixes in service in 713, spread over 19 rate centers and 28 holders.
Are there complaints about 713 numbers?
The FCC data on file has 2,902 complaints for 2,175 numbers in 713. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.