Core Communications phone numbers
Core Communications holds 379 phone prefixes in 3 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. Core Communications 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 Core Communications numbers are
| State | Prefixes |
|---|---|
| Pennsylvania | 265 |
| Maryland | 113 |
| New York | 1 |
Area codes with the most Core Communications prefixes
57062 72448 81448 66741 44334 24032 48429 71725 61015 26713 2237 2727 3015 4455 4124 8782 4101 3471
About 90% 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.