--- title: "Area code 484: Pennsylvania, United States" url: "https://lookvalid.com/area-code/484.md" canonical_url: "https://lookvalid.com/area-code/484" last_updated: "2026-10-23" type: "reference" summary: "Area code 484 serves Pennsylvania, United States. Number formats, numbering rules, a live phone validator and the other codes in Pennsylvania." --- # Area code 484: Pennsylvania, United States Area code 484 serves Pennsylvania, United States. Number formats, numbering rules, a live phone validator and the other codes in Pennsylvania. NANPA lists 786 central office codes (prefixes) in use in area code 484, held by 41 holders across 79 rate centers. Paetec Itel holds the most prefixes, 152 (19%). 92% of the prefixes are pooled, which means their thousands-blocks can belong to different companies. The FCC unwanted-call data has 2,559 complaints on file for 1,987 numbers in 484, most often filed as "Unwanted Calls". These are consumer reports, not findings. ## Facts - In service since: 1999-06-05 - Time zone: Eastern (E) - Assigned overlays: 610 (1994-01-08), 835 (2022-09-02) - Prefixes in use: 786 - Pooled prefixes: 722 (92%) - Rate centers: 79 - Companies holding prefixes: 41 - Assignment dates on file: 2001-01-16 to 2023-05-30 (272 prefixes) - ZIP codes in its places: 71 ## Rate centers | Rate center | Prefixes | Share | | --- | --- | --- | | ALLENTOWN | 82 | 10% | | READING | 51 | 6% | | PHPHSBZN30 | 44 | 6% | | W CHESTER | 36 | 5% | | BETHLEHEM | 30 | 4% | | PHPHSBZN28 | 25 | 3% | | PHPHSBZN10 | 21 | 3% | | POTTSTOWN | 20 | 3% | | 71 other rate centers | 477 | 61% | ## Carriers | Holder | Prefixes | Share | | --- | --- | --- | | Paetec Itel | 152 | 19% | | Level 3 Communications | 128 | 16% | | Onvoy | 78 | 10% | | Omnipoint Communications Enterprises | 62 | 8% | | New Cingular Wireless PCS | 53 | 7% | | Verizon Wireless | 45 | 6% | | 35 other carriers | 268 | 34% | 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 - 1994-01-08: Area code 610, named as the parent of 484 in the NANPA report, was in service. - 1999-06-05: Area code 484 went into service. - 2022-09-02: Area code 835 went into service as an overlay in the same area as 484. ## Nearest area codes The area codes closest to 484, measured between the centers of the ZIP code places they serve, are 215 (about 24 miles), 267 (about 24 miles), 445 (about 24 miles), 609 (about 56 miles) and 856 (about 56 miles). ## ZIP codes 71 ZIP codes fall in places that have a rate center in this area code. The places with the most are Reading, PA (12 ZIP codes), Allentown, PA (8 ZIP codes) and Bethlehem, PA (6 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 2,559 complaints for 1,987 numbers. Numbers whose latest complaint falls in each year: - 2023: 100 - 2024: 236 - 2025: 116 ## Questions ### Where is area code 484? NANPA assigns area code 484 to Pennsylvania, United States. ### In which state does area code 484 sit? Pennsylvania. 484 is one of 15 area codes the NANPA table assigns to the state. ### Which places does area code 484 cover? The places with the most ZIP codes among the rate centers in 484 are Reading, PA, Allentown, PA and Bethlehem, PA. The rate center list on this page shows all of them. ### Who owns area code 484? NANPA assigns area codes. Within 484, Paetec Itel holds the most prefixes, 152 prefixes or 19%. ### Which time zone does 484 use? The NANPA NPA report lists the time zone for 484 as Eastern (E). ### What year did 484 enter service? The NANPA NPA report gives an in-service date of 1999-06-05, so 484 has been in use since 1999. ### Does area code 484 have an overlay? Yes. 610 (in service 1994-01-08) and 835 (in service 2022-09-02) share the same area with 484, so numbers from all of them are local to each other. ### Which area codes are nearest to 484? The area codes closest to 484, measured between the centers of the ZIP code places they serve, are 215 (about 24 miles), 267 (about 24 miles), 445 (about 24 miles), 609 (about 56 miles) and 856 (about 56 miles). ### How many prefixes does area code 484 have? NANPA's report dated 2026-10-17 lists 786 prefixes in service in 484, spread over 79 rate centers and 41 holders. ### Are there complaints about 484 numbers? The FCC data on file has 2,559 complaints for 1,987 numbers in 484. 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).