NANPA lists Allstream's prefixes under Electric Lightwave LLC, which does business as Allstream.
NANPA lists these prefixes under Electric Lightwave LLC, doing business as Allstream. Allstream sells phone, internet and network services to businesses, so its numbers are most often office and business lines. NANPA, which runs the North American numbering plan, lists Allstream as the holder of 450 prefixes in 11 states and territories, less than 1% of the 198,436 prefixes it has assigned.
- Name in NANPA's file
- ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM
- What it is
- Business phone and internet company
- Prefixes held
- 450 of 198,436 (less than 1%)
- States and territories
- 11 of 56, most in Washington, Oregon and Arizona
- Area codes
- 36
- Pooled prefixes
- 91%, 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 Allstream 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.
Pick the country, then enter the number without the country code.
Free & rate-limited. No signup required to try.
A lookup shows Allstream when the number is a business line on its network.
Allstream sells phone lines to companies, so many of its numbers are office lines, call centers and other business phone systems.
Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with an Allstream prefix can show another company if it was ported.
Allstream holds the most prefixes in Washington: 130 of its 450.
- Washington130
- Oregon86
- Arizona66
- Utah54
- Minnesota39
- Colorado27
- California18
- Idaho18
Plus 12 prefixes in 3 more states and territories.
Allstream holds prefixes in 36 area codes, and these are its largest.
Of the prefixes NANPA dates, Allstream received the most in 2001: 36.
NANPA's file gives an assignment date for 164 of Allstream's 450 prefixes, all from 2001 on. The rest have no date in the file.
A call from an Allstream number is not spam just because of the carrier.
Allstream sells phone lines to businesses, so a call from one of its numbers often comes from a company's office or call center.
Whether that call is one you want is a separate question, and caller ID can be faked, so judge it by what the caller asks for.
Check the full number with our free spam phone checker before you call back.
You can read about 5 more carrier names here.
- Teleport Communications America, LLCAT&T's business phone network, 4,083 prefixes
- Level 3 Communications, LLCLumen's business and wholesale network, 10,346 prefixes
- TPx CommunicationsBusiness phone and internet company, 807 prefixes
- PAETEC iTel, LLCWindstream's business phone network, 5,552 prefixes
- LightpathBusiness fiber and phone network, 269 prefixes
These are the questions people ask about Allstream.
What is Allstream?
NANPA lists these prefixes under Electric Lightwave LLC, doing business as Allstream. Allstream sells phone, internet and network services to businesses, so its numbers are most often office and business lines.
Why does a phone lookup say Allstream?
A lookup shows Allstream when the number is a business line on its network. Allstream sells phone lines to companies, so many of its numbers are office lines, call centers and other business phone systems. Numbers can also move between carriers, so a lookup reads the number's carrier today, and a number with an Allstream prefix can show another company if it was ported.
Is a call from an Allstream number spam?
Allstream sells phone lines to businesses, so a call from one of its numbers often comes from a company's office or call center. Whether that call is one you want is a separate question, and caller ID can be faked, so judge it by what the caller asks for. Check the full number with our free spam phone checker before you call back.
How many phone prefixes does Allstream hold?
NANPA lists Allstream as the holder of 450 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. 91% of these are pooled, so blocks of 1,000 numbers inside them can belong to other carriers.
Which states have the most Allstream prefixes?
Washington (130), Oregon (86) and Arizona (66) have the most, out of 11 states and territories.
Can I find out who owns an Allstream number?
Allstream 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.