--- title: "Area code 713: Texas, United States" url: "https://lookvalid.com/area-code/713.md" canonical_url: "https://lookvalid.com/area-code/713" last_updated: "2026-10-23" type: "reference" summary: "Area code 713 serves Texas, United States. Number formats, numbering rules, a live phone validator and the other codes in Texas." --- # Area code 713: Texas, United States Area code 713 serves Texas, United States. Number formats, numbering rules, a live phone validator and the other codes in Texas. NANPA lists 785 central office codes (prefixes) in use in area code 713, held by 28 holders across 19 rate centers. The largest rate center is HOUSTON, with 737 prefixes (94%). Southwestern Bell holds the most prefixes, 470 (60%). 43% of the prefixes are pooled, which means their thousands-blocks can belong to different companies. The FCC unwanted-call data has 2,902 complaints on file for 2,175 numbers in 713, most often filed as "Unwanted Calls". These are consumer reports, not findings. ## Facts - 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 | 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% | ## Carriers | 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. ## History - 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. ## Nearest area codes 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). ## ZIP codes 213 ZIP codes fall in places that have a rate center in this area code. The places with the most are Houston, TX (178 ZIP codes), Spring, TX (12 ZIP codes) and Sugar Land, TX (5 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes. ## Complaints on file 2,902 complaints for 2,175 numbers. Numbers whose latest complaint falls in each year: - 2023: 99 - 2024: 110 - 2025: 86 ## Questions ### 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. Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).