NumberResearchRecent prefix assignments
357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2002-04-03 | 515-298 | 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | UNITED STATES CELLULAR - IA | 6266 | BOONE | IA |
| 2002-04-03 | 585-403 | 3XXX4XXX8XXX · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | OLEAN | NY |
| 2002-04-03 | 706-589 | not yet reported which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | AUGUSTA | GA |
| 2002-04-03 | 706-590 | 4XXX6XXX7XXX8XXX · 3 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | WEST POINT | GA |
| 2002-04-03 | 731-271 | 0XXX1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | SO FULTON | TN |
| 2002-04-03 | 850-586 | 6XXX7XXX8XXX · 2 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | FTWALTNBCH | FL |
| 2002-04-03 | 912-224 | not yet reported which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | SAVANNAH | GA |
| 2002-04-03 | 985-233 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LAPLACE | LA |
| 2002-04-02 | 248-493 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | SOUTH LYON | MI |
| 2002-04-02 | 248-899 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | ORTONVILLE | MI |
| 2002-04-02 | 248-913 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CLARKSTON | MI |
| 2002-04-02 | 262-649 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | MILWAUKZN2 | WI |
| 2002-04-02 | 270-208 | 1XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | FULTON | KY |
| 2002-04-02 | 270-241 | 1XXX2XXX4XXX7XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | CAYCE | KY |
| 2002-04-02 | 270-285 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | MORGANFLD | KY |
| 2002-04-02 | 270-775 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | BEAVER DAM | KY |
| 2002-04-02 | 270-854 | 2XXX3XXX4XXX5XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | HENDERSON | KY |
| 2002-04-02 | 270-859 | 3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | HARDINSBG | KY |
| 2002-04-02 | 270-896 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | PRINCETON | KY |
| 2002-04-02 | 270-905 | 2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | EARLINGTON | KY |
| 2002-04-02 | 270-906 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | BENTON | KY |
| 2002-04-02 | 270-946 | 3XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | RUSSELLVL | KY |
| 2002-04-02 | 414-234 | 2XXX3XXX4XXX5XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | MILWAUKZN5 | WI |
| 2002-04-02 | 414-235 | 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | MILWAUKZN3 | WI |
| 2002-04-02 | 414-236 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | MILWAUKZN4 | WI |
| 2002-04-02 | 520-898 | not yet reported which blocks → | MIDVALE TELEPHONE EXCHANGE, INC. | 2226 | SILVERBELL | AZ |
| 2002-04-02 | 580-790 | not yet reported which blocks → | T.K.O. COMMUNICATIONS, INC. | 9732 | ADA | OK |
| 2002-04-02 | 609-489 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON NEW JERSEY, INC. | 9206 | BARNEGAT | NJ |
| 2002-04-02 | 618-613 | 1XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | BECKEMEYER | IL |
| 2002-04-02 | 618-615 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHESTER | IL |
| 2002-04-02 | 618-674 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | CARRIERSML | IL |
| 2002-04-02 | 618-681 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CARTERVL | IL |
| 2002-04-02 | 618-712 | 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | THEBES | IL |
| 2002-04-02 | 618-790 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | DU QUOIN | IL |
| 2002-04-02 | 618-882 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | HIGHLAND | IL |
| 2002-04-02 | 734-873 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | PINCKNEY | MI |
| 2002-04-02 | 774-885 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | NATICK | MA |
| 2002-04-02 | 774-925 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRAMINGHAM | MA |
| 2002-04-02 | 814-370 | 0XXX1XXX9XXX · 3 holders which blocks → | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | BRADFORD | PA |
| 2002-04-02 | 815-587 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | OTTAWA | IL |
| 2002-04-02 | 815-605 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | GRANT PARK | IL |
| 2002-04-02 | 815-701 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WOODSTOCK | IL |
| 2002-04-02 | 815-855 | 0–9 XXXall 10 · 8 holders which blocks → | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | MILLEDGEVL | IL |
| 2002-04-02 | 832-630 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-04-02 | 832-640 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-04-02 | 832-641 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-04-02 | 832-643 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-04-02 | 832-646 | not yet reported which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2002-04-02 | 857-449 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | BOSTON | MA |
| 2002-04-02 | 914-438 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | WSCHSTZN08 | NY |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.