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HD Carrier, LLC holds phone number prefixes across the US but publishes little about itself.

HD Carrier, LLC is not one of the mobile networks or the old local phone companies, and we found no public description of what it sells. A company that holds prefixes in many states this way most often supplies numbers to internet phone services, so that is the most likely reason a lookup shows it, though we have not confirmed it. NANPA, which runs the North American numbering plan, lists HD Carrier as the holder of 329 prefixes in 51 states and territories, less than 1% of the 198,436 prefixes it has assigned.

Name in NANPA's file
HD CARRIER LLC
What it is
Number holder with no public description
Prefixes held
329 of 198,436 (less than 1%)
States and territories
51 of 56, most in Florida, California and Texas
Area codes
196
Pooled prefixes
100%, 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.

You can check which carrier a number is on today, for free.

Enter the full number to see its carrier now, which may not be HD Carrier if the number was ported. It is the same free check as our carrier lookup. To see whether it is a mobile, landline or VoIP line, use the line type lookup, and to see who it is listed to, the who called me lookup.

A lookup shows HD Carrier when the number comes from a service that gets its numbers there.

HD Carrier rarely sells phone service to the person using the number. Internet calling apps, VoIP phone systems, call centers and business phone services get their numbers from carriers like HD Carrier, so a lookup shows the carrier behind the service, not the service itself.

Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with an HD Carrier prefix can show another company if it was ported.

HD Carrier holds the most prefixes in Florida: 30 of its 329.

HD Carrier prefixes by state

Plus 183 prefixes in 43 more states and territories.

HD Carrier holds prefixes in 196 area codes, and these are its largest.

Of the prefixes NANPA dates, HD Carrier received the most in 2020: 81.

NANPA's file gives an assignment date for 276 of HD Carrier's 329 prefixes, all from 2001 on. The rest have no date in the file.

New HD Carrier prefixes by year
81
200120202026

A call from an HD Carrier number is not spam just because of the carrier.

Numbers from wholesale carriers like HD Carrier are used by ordinary people on calling apps and by real businesses. They are also cheap and quick to get, so some robocallers use them too.

The carrier name alone does not make a call safe or spam: judge it by what the caller asks for, and be careful with anyone who asks for money, codes or passwords.

Check the full number with our free spam phone checker before you call back.

These are the questions people ask about HD Carrier.

What is HD Carrier, LLC?

HD Carrier, LLC is not one of the mobile networks or the old local phone companies, and we found no public description of what it sells. A company that holds prefixes in many states this way most often supplies numbers to internet phone services, so that is the most likely reason a lookup shows it, though we have not confirmed it.

Why does a phone lookup say HD Carrier?

A lookup shows HD Carrier when the number comes from a service that gets its numbers there. HD Carrier rarely sells phone service to the person using the number. Internet calling apps, VoIP phone systems, call centers and business phone services get their numbers from carriers like HD Carrier, so a lookup shows the carrier behind the service, not the service itself. Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with an HD Carrier prefix can show another company if it was ported.

Is a call from an HD Carrier number spam?

Numbers from wholesale carriers like HD Carrier are used by ordinary people on calling apps and by real businesses. They are also cheap and quick to get, so some robocallers use them too. The carrier name alone does not make a call safe or spam: judge it by what the caller asks for, and be careful with anyone who asks for money, codes or passwords. Check the full number with our free spam phone checker before you call back.

How many phone prefixes does HD Carrier hold?

NANPA lists HD Carrier as the holder of 329 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. 100% of these are pooled, so blocks of 1,000 numbers inside them can belong to other carriers.

Which states have the most HD Carrier prefixes?

Florida (30), California (27) and Texas (22) have the most, out of 51 states and territories.

Can I find out who owns an HD Carrier number?

HD Carrier 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.