---
title: "Area code 747: California, United States"
url: "https://lookvalid.com/area-code/747.md"
canonical_url: "https://lookvalid.com/area-code/747"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 747 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California."
---

# Area code 747: California, United States

Area code 747 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California.

NANPA lists 255 central office codes (prefixes) in use in area code 747, held by 28 holders across 16 rate centers.
T-Mobile USA holds the most prefixes, 53 (21%). 99% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 1,134 complaints on file for 907 numbers in 747, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 2009-05-18
- Time zone: Pacific (P)
- Assigned overlays: 818 (1984-01-07)
- Prefixes in use: 255
- Pooled prefixes: 253 (99%)
- Rate centers: 16
- Companies holding prefixes: 28
- Assignment dates on file: 2009-08-14 to 2026-07-24 (227 prefixes)
- ZIP codes in its places: 39

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| BRBN BRBN | 31 | 12% |
| CANOGAPARK | 29 | 11% |
| GLENDALE | 26 | 10% |
| VAN NUYS | 25 | 10% |
| NO HOLLYWD | 23 | 9% |
| AGOURA | 18 | 7% |
| NORTHRIDGE | 18 | 7% |
| SNFN SNFN | 15 | 6% |
| 8 other rate centers | 70 | 27% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| T-Mobile USA | 53 | 21% |
| Onvoy | 42 | 16% |
| Fractel | 39 | 15% |
| New Cingular Wireless PCS | 27 | 11% |
| Bandwidth.com CLEC | 24 | 9% |
| Ton80 Communications | 11 | 4% |
| 22 other carriers | 59 | 23% |

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

- 1984-01-07: Area code 818, named as the parent of 747 in the NANPA report, was in service.
- 2009-05-18: Area code 747 went into service.

## Nearest area codes

The area codes closest to 747, measured between the centers of the ZIP code places they serve, are 310 (about 22 miles), 424 (about 22 miles), 626 (about 24 miles), 562 (about 28 miles) and 657 (about 39 miles).

## ZIP codes

39 ZIP codes fall in places that have a rate center in this area code. The places with the most are Glendale, CA (14 ZIP codes), Van Nuys, CA (13 ZIP codes) and Northridge, CA (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

1,134 complaints for 907 numbers. Numbers whose latest complaint falls in each year:

- 2023: 101
- 2024: 109
- 2025: 74

## Questions

### Where is area code 747?

NANPA assigns area code 747 to California, United States.

### In which state does area code 747 sit?

California. 747 is one of 41 area codes the NANPA table assigns to the state.

### Which places does area code 747 cover?

The places with the most ZIP codes among the rate centers in 747 are Glendale, CA, Van Nuys, CA and Northridge, CA. The rate center list on this page shows all of them.

### Who owns area code 747?

NANPA assigns area codes. Within 747, T-Mobile USA holds the most prefixes, 53 prefixes or 21%.

### Which time zone does 747 use?

The NANPA NPA report lists the time zone for 747 as Pacific (P).

### What year did 747 enter service?

The NANPA NPA report gives an in-service date of 2009-05-18, so 747 has been in use since 2009.

### Does area code 747 have an overlay?

Yes. 818 (in service 1984-01-07) shares the same area with 747, so numbers from all of them are local to each other.

### Which area codes are nearest to 747?

The area codes closest to 747, measured between the centers of the ZIP code places they serve, are 310 (about 22 miles), 424 (about 22 miles), 626 (about 24 miles), 562 (about 28 miles) and 657 (about 39 miles).

### How many prefixes does area code 747 have?

NANPA's report dated 2026-10-17 lists 255 prefixes in service in 747, spread over 16 rate centers and 28 holders.

### Are there complaints about 747 numbers?

The FCC data on file has 1,134 complaints for 907 numbers in 747. 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).