NumberResearchRecent prefix assignments
354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2002-03-15 | 304-596 | 0XXX1XXX3XXX4XXX7XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MARTINSBG | WV |
| 2002-03-15 | 304-597 | 0XXX which blocks → | ONVOY, LLC - WV | 449F | KEYSER | WV |
| 2002-03-15 | 403-645 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2002-03-15 | 418-813 | not yet reported which blocks → | TELUS Quebec | 8083 | Pont-Rouge | — |
| 2002-03-15 | 419-956 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | DEFIANCE | OH |
| 2002-03-15 | 419-971 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | GALION | OH |
| 2002-03-15 | 450-340 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St-Sauveur | — |
| 2002-03-15 | 513-283 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | CINCINNATI | OH |
| 2002-03-15 | 540-903 | 7XXX8XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | FREDECKSBG | VA |
| 2002-03-15 | 631-793 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2002-03-15 | 631-871 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIVERHEAD | NY |
| 2002-03-15 | 724-668 | 5XXX6XXX · 2 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | NEWALXNDRI | PA |
| 2002-03-15 | 724-944 | 3XXX4XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | NEW CASTLE | PA |
| 2002-03-15 | 774-256 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALPOLE | MA |
| 2002-03-15 | 774-840 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CHATHAM | MA |
| 2002-03-15 | 787-529 | none assigned yet which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2002-03-15 | 819-719 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Shawinigan | — |
| 2002-03-15 | 843-473 | 0–9 XXXall 10 · 6 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | BEAUFORT | SC |
| 2002-03-15 | 843-474 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | LAUREL BAY | SC |
| 2002-03-15 | 910-569 | 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NC | 3235 | BISCOE | NC |
| 2002-03-14 | 219-509 | 2XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → | FBN INDIANA, INC. - IN | 4117 | HEBRON | IN |
| 2002-03-14 | 219-588 | 4XXX5XXX7XXX8XXX which blocks → | T-MOBILE USA, INC. | 6529 | GARY | IN |
| 2002-03-14 | 225-241 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BATONROUGE | LA |
| 2002-03-14 | 318-286 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SHREVEPORT | LA |
| 2002-03-14 | 416-764 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Toronto | — |
| 2002-03-14 | 417-440 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | AURORA | MO |
| 2002-03-14 | 419-750 | 2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NORWALK | OH |
| 2002-03-14 | 419-982 | 2XXX5XXX8XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANSFIELD | OH |
| 2002-03-14 | 450-321 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Longueuil | — |
| 2002-03-14 | 450-761 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | St-Lambert | — |
| 2002-03-14 | 450-916 | not yet reported which blocks → | Bell Mobility | 6574 | Joliette | — |
| 2002-03-14 | 450-981 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Pont-Viau | — |
| 2002-03-14 | 504-920 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NEWORLEANS | LA |
| 2002-03-14 | 509-587 | 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | BREWSTER | WA |
| 2002-03-14 | 516-581 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NASSAUZN05 | NY |
| 2002-03-14 | 516-582 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NASSAUZN02 | NY |
| 2002-03-14 | 519-943 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| 2002-03-14 | 574-376 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | WARSAW | IN |
| 2002-03-14 | 601-377 | not yet reported which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | TYLERTOWN | MS |
| 2002-03-14 | 601-470 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | LAUREL | MS |
| 2002-03-14 | 601-489 | 0XXX1XXX5XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | COLLINS | MS |
| 2002-03-14 | 608-433 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | LA CROSSE | WI |
| 2002-03-14 | 631-682 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2002-03-14 | 705-422 | not yet reported which blocks → | Bell Canada | 8051 | Wasaga Beach | — |
| 2002-03-14 | 718-909 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NWYRCYZN06 | NY |
| 2002-03-14 | 740-447 | 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | ATHENS | OH |
| 2002-03-14 | 780-931 | not yet reported which blocks → | TELUS Mobility | 8301 | Jasper | — |
| 2002-03-14 | 845-270 | 6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HAVERSTRAW | NY |
| 2002-03-14 | 903-330 | 7XXX8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TYLER | TX |
| 2002-03-14 | 905-901 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oakville | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.