NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2009-12-01 | 507-544 | 8XXX9XXX · 2 holders which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | RUSHMORE | MN |
| 2007-07-26 | 507-590 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | ELLSWORTH | MN |
| 2006-06-20 | 507-899 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | JASPER | MN |
| — | 507-212 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | TRACY | MN |
| — | 507-337 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | MARSHALL | MN |
| — | 507-343 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | WORTHINGTN | MN |
| — | 507-371 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | LAKEWILSON | MN |
| — | 507-393 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | SLAYTON | MN |
| — | 507-395 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | CURRIE | MN |
| — | 507-449 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | LUVERNE | MN |
| — | 507-562 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | PIPESTONE | MN |
| — | 507-631 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | EDGERTON | MN |
| — | 507-727 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | WORTHINGTN | MN |
| — | 507-827 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | ADRIAN | MN |
| — | 507-929 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 4768 | MARSHALL | MN |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.