SunCom Wireless is the mobile network T-Mobile bought in 2008.
SunCom Wireless ran a mobile network in the southeastern US and Puerto Rico. T-Mobile bought it in 2008, and NANPA lists its prefixes as SunCom, doing business as T-Mobile USA. NANPA, which runs the North American numbering plan, lists SunCom as the holder of 852 prefixes in 6 states and territories, less than 1% of the 198,436 prefixes it has assigned.
- Name in NANPA's file
- SUNCOM DBA T-MOBILE USA
- What it is
- Mobile network
- Prefixes held
- 852 of 198,436 (less than 1%)
- States and territories
- 6 of 56, most in North Carolina, Puerto Rico and South Carolina
- Area codes
- 22
- Pooled prefixes
- 89%, shared in blocks of 1,000 numbers
From NANPA's central office code file of October 1, 2026. A prefix is the three digits after the area code.
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A lookup shows SunCom when the number is on T-Mobile's mobile network.
Carrier records use a company's legal or historic name, so a lookup can show SunCom while the person's bill says T-Mobile.
Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with a SunCom prefix can show another company if it was ported.
SunCom holds the most prefixes in North Carolina: 413 of its 852.
- North Carolina413
- Puerto Rico222
- South Carolina179
- Tennessee25
- Virginia10
- Georgia3
SunCom holds prefixes in 22 area codes, and these are its largest.
Of the prefixes NANPA dates, SunCom received the most in 2001: 87.
NANPA's file gives an assignment date for 516 of SunCom's 852 prefixes, all from 2001 on. The rest have no date in the file.
A call from a SunCom number is not spam just because of the carrier.
Numbers on mobile networks like this one belong to millions of ordinary people and businesses, so the carrier name says nothing about who is calling.
Caller ID can also be faked, so judge the call by what the caller asks for, never by the carrier name.
Check the full number with our free spam phone checker before you call back.
These are the questions people ask about SunCom.
What is SunCom?
SunCom Wireless ran a mobile network in the southeastern US and Puerto Rico. T-Mobile bought it in 2008, and NANPA lists its prefixes as SunCom, doing business as T-Mobile USA.
Why does a phone lookup say SunCom?
A lookup shows SunCom when the number is on T-Mobile's mobile network. Carrier records use a company's legal or historic name, so a lookup can show SunCom while the person's bill says T-Mobile. Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with a SunCom prefix can show another company if it was ported.
Is a call from a SunCom number spam?
Numbers on mobile networks like this one belong to millions of ordinary people and businesses, so the carrier name says nothing about who is calling. Caller ID can also be faked, so judge the call by what the caller asks for, never by the carrier name. Check the full number with our free spam phone checker before you call back.
How many phone prefixes does SunCom hold?
NANPA lists SunCom as the holder of 852 prefixes, less than 1% of all assigned US prefixes. A prefix is the three digits after the area code and covers up to 10,000 numbers. 89% of these are pooled, so blocks of 1,000 numbers inside them can belong to other carriers.
Which states have the most SunCom prefixes?
North Carolina (413), Puerto Rico (222) and South Carolina (179) have the most, out of 6 states and territories.
Can I find out who owns a SunCom number?
SunCom does not publish who uses its numbers. Our free who called me lookup shows who a US number is listed to and the city and state on the listing, when the number has a listing.
Source: NANPA, the North American Numbering Plan Administrator: its central office code assignments, as of October 1, 2026. Company histories are from public records and each company's own descriptions.