NumberResearchRecent prefix assignments
358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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
Sep 2026
Aug 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2004-12-09 | 905-583 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Palgrave | — |
| 2004-12-09 | 905-589 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Queensville | — |
| 2004-12-09 | 905-590 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Schomberg | — |
| 2004-12-09 | 905-591 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stouffville | — |
| 2004-12-09 | 905-597 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thornhill | — |
| 2004-12-09 | 905-604 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Unionville | — |
| 2004-12-09 | 905-605 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Woodbridge | — |
| 2004-12-08 | 229-486 | not yet reported which blocks → | MCC TELEPHONY LLC | 593K | VIENNA | GA |
| 2004-12-08 | 304-515 | not yet reported which blocks → | FIBERNET, LLC - WV | 4095 | ROMNEY | WV |
| 2004-12-08 | 503-367 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2004-12-08 | 715-941 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | ELLSWORTH | WI |
| 2004-12-08 | 905-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maple | — |
| 2004-12-08 | 905-554 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Markham | — |
| 2004-12-08 | 905-557 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Mount Albert | — |
| 2004-12-08 | 905-558 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Nobleton | — |
| 2004-12-08 | 905-596 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Sutton | — |
| 2004-12-07 | 636-707 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CEDAR HILL | MO |
| 2004-12-07 | 772-634 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | STUART | FL |
| 2004-12-06 | 204-220 | not yet reported which blocks → | Bell West Inc. | 2933 | Winnipeg | — |
| 2004-12-06 | 250-663 | not yet reported which blocks → | Bell West Inc. | 2933 | Fort St. John | — |
| 2004-12-06 | 416-514 | not yet reported which blocks → | Bell Canada | 8051 | Toronto | — |
| 2004-12-06 | 418-381 | not yet reported which blocks → | Bell Canada | 984C | Sainte-Marie-de-Beauce | — |
| 2004-12-06 | 517-330 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | LITCHFIELD | MI |
| 2004-12-06 | 541-460 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | MADRAS | OR |
| 2004-12-06 | 601-828 | not yet reported which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | ROXIE | MS |
| 2004-12-06 | 604-393 | not yet reported which blocks → | Bell West Inc. | 2933 | Chilliwack | — |
| 2004-12-06 | 616-205 | 0–9 XXXall 10 · 8 holders which blocks → | TELNET WORLDWIDE, INC. | 817J | SPARTA | MI |
| 2004-12-06 | 616-757 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TELNET WORLDWIDE, INC. | 817J | BORCULO | MI |
| 2004-12-06 | 616-986 | 0XXX1XXX5XXX6XXX8XXX · 5 holders which blocks → | TELNET WORLDWIDE, INC. | 817J | ALLENDALE | MI |
| 2004-12-06 | 778-338 | not yet reported which blocks → | Bell West Inc. | 2933 | North Vancouver | — |
| 2004-12-06 | 810-988 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MONTROSE | MI |
| 2004-12-06 | 870-615 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT VIEW | AR |
| 2004-12-06 | 906-244 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CEDARVILLE | MI |
| 2004-12-06 | 906-252 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MANISTIQUE | MI |
| 2004-12-06 | 906-434 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | RUDYARD | MI |
| 2004-12-06 | 906-710 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | DE TOUR | MI |
| 2004-12-06 | 906-717 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | PICKFORD | MI |
| 2004-12-06 | 956-525 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BROWNSVL | TX |
| 2004-12-06 | 989-456 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | OMER | MI |
| 2004-12-06 | 989-532 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | AU GRES | MI |
| 2004-12-06 | 989-626 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CHESANING | MI |
| 2004-12-05 | 217-215 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | RANTOUL | IL |
| 2004-12-03 | 239-424 | 0–9 XXXall 10 · 6 holders which blocks → | CENTURYLINK OF FLORIDA, INC. (UNITED) | 0341 | CAPE CORAL | FL |
| 2004-12-03 | 250-200 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Revelstoke | — |
| 2004-12-03 | 250-588 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Victoria | — |
| 2004-12-03 | 418-220 | not yet reported which blocks → | Bell Canada | 984C | Saint-Georges-de-Beauce | — |
| 2004-12-03 | 418-280 | not yet reported which blocks → | Bell Canada | 984C | Baie-Comeau (Hauterive) | — |
| 2004-12-03 | 418-734 | not yet reported which blocks → | Bell Canada | 984C | Rimouski | — |
| 2004-12-03 | 418-921 | not yet reported which blocks → | Bell Canada | 984C | Baie-Comeau | — |
| 2004-12-03 | 423-215 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | ONEIDA | TN |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.