NumberResearchRecent prefix assignments
358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026
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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-10-28 | 506-214 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Saint John | — |
| 2005-10-28 | 506-215 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Salisbury | — |
| 2005-10-28 | 506-216 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Rothesay | — |
| 2005-10-28 | 506-217 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Grand Bay-Westfield | — |
| 2005-10-28 | 709-237 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. John's | — |
| 2005-10-28 | 780-393 | not yet reported which blocks → | TELUS | 8084 | Millet | — |
| 2005-10-28 | 780-396 | not yet reported which blocks → | TELUS | 8084 | Whitecourt | — |
| 2005-10-28 | 780-506 | not yet reported which blocks → | TELUS | 8084 | Spirit River | — |
| 2005-10-28 | 780-854 | not yet reported which blocks → | TELUS | 8084 | Vermilion | — |
| 2005-10-28 | 812-565 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IN | 105F | COLUMBUS | IN |
| 2005-10-28 | 828-309 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HENDERSNVL | NC |
| 2005-10-27 | 225-309 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | PLAQUEMINE | LA |
| 2005-10-27 | 312-472 | 0–9 XXXwhole prefix which blocks → | ILLINOIS BELL TEL CO | 9329 | CHICGOZN01 | IL |
| 2005-10-27 | 337-464 | none assigned yet which blocks → | PAETEC ITEL, LLC | 829J | CARENCRO | LA |
| 2005-10-27 | 337-503 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | SULPHUR | LA |
| 2005-10-27 | 402-613 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | LINCOLN | NE |
| 2005-10-27 | 402-936 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | FREMONT | NE |
| 2005-10-27 | 410-915 | not yet reported which blocks → | BALTIMORE-WASHINGTON TELEPHONE (BWT) | 8697 | BALTIMORE | MD |
| 2005-10-27 | 501-353 | 0–9 XXXall 10 · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | LITTLEROCK | AR |
| 2005-10-27 | 678-400 | 0–9 XXXall 10 · 5 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | CLERMONT | GA |
| 2005-10-27 | 678-765 | 0–9 XXXall 10 · 4 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | BUFORD | GA |
| 2005-10-27 | 678-943 | 0–9 XXXall 10 · 3 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | GAINESVL | GA |
| 2005-10-27 | 727-470 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CLEARWATER | FL |
| 2005-10-27 | 909-784 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | POMONA | CA |
| 2005-10-27 | 919-709 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | FREMONT | NC |
| 2005-10-27 | 919-902 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | BENSON | NC |
| 2005-10-27 | 985-206 | 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | MADISONVL | LA |
| 2005-10-27 | 985-365 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | HAMMOND | LA |
| 2005-10-26 | 210-563 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX |
| 2005-10-26 | 229-441 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | MCC TELEPHONY LLC | 593K | BERLIN | GA |
| 2005-10-26 | 480-290 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2005-10-26 | 781-633 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | CANTON | MA |
| 2005-10-26 | 910-785 | 6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | LUMBERTON | NC |
| 2005-10-25 | 289-407 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2005-10-25 | 403-422 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | High River | — |
| 2005-10-25 | 403-470 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2005-10-25 | 506-360 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Sackville | — |
| 2005-10-25 | 506-477 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Grand Falls | — |
| 2005-10-25 | 519-710 | not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| 2005-10-25 | 613-573 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cumberland | — |
| 2005-10-25 | 613-574 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Metcalfe | — |
| 2005-10-25 | 613-578 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Constance Bay | — |
| 2005-10-25 | 613-875 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2005-10-25 | 613-876 | not yet reported which blocks → | TELUS Mobility | 8303 | Kingston | — |
| 2005-10-25 | 780-588 | not yet reported which blocks → | TELUS | 8084 | Fort McMurray | — |
| 2005-10-25 | 780-979 | not yet reported which blocks → | TELUS | 8084 | Nisku | — |
| 2005-10-25 | 815-760 | 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | BUREAU | IL |
| 2005-10-25 | 843-506 | 6XXX7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | DILLON | SC |
| 2005-10-24 | 423-307 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | MORRISTOWN | TN |
| 2005-10-24 | 785-321 | not yet reported which blocks → | WTC COMMUNICATIONS, INC. - KS | 460D | ST MARYS | KS |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.