Allstream phone numbers
Allstream holds 450 phone prefixes in 11 states and territories.
Internet / business phone carrier Numbers in this prefix were assigned to a carrier that mainly serves internet phone services, cable phone and business lines.
What it means. Allstream mainly sells internet and business phone service. Numbers like these can be rented in bulk for a low price, which is why legitimate call centers, apps and robocallers all use them. A call from this kind of prefix is not a warning by itself, but it's a reason to verify who is calling.
See why the number on your screen can be faked.
Where Allstream numbers are
| State | Prefixes |
|---|---|
| Washington | 130 |
| Oregon | 86 |
| Arizona | 66 |
| Utah | 54 |
| Minnesota | 39 |
| Colorado | 27 |
| California | 18 |
| Idaho | 18 |
| Nevada | 5 |
| Montana | 4 |
| North Dakota | 3 |
Area codes with the most Allstream prefixes
50351 80143 42540 25330 20625 36025 54121 20818 92817 72017 48016 60215 97114 52010 65110 9169 5099 6238 7078 6128 2187 4356 3205 3855 9704 9524 4064 7754 3033 7193
About 91% of these prefixes are pooled (shared with other carriers in blocks). The carrier on any one number can differ if the owner switched carriers. Source: NANPA central office code records, 2026-10-10.