NumberResearchRecent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026
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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May 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-10-31 | 605-505 | 0XXX1XXX5XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PARKSTON | SD |
| 2005-10-31 | 682-593 | 0–9 XXXall 10 · 3 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | KELLER | TX |
| 2005-10-31 | 731-736 | 0–9 XXXall 10 · 5 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | JACKSON | TN |
| 2005-10-31 | 803-860 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ORANGEBURG | SC |
| 2005-10-31 | 814-390 | 0XXX5XXX6XXX · 3 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | HOPEWELL | PA |
| 2005-10-31 | 814-401 | 0XXX1XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | FISHERTOWN | PA |
| 2005-10-31 | 814-595 | 0XXX1XXX7XXX9XXX · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | CHARLESVL | PA |
| 2005-10-31 | 814-608 | 0XXX3XXX7XXX · 3 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | OSTERBURG | PA |
| 2005-10-31 | 814-709 | 0XXX1XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | HYNDMAN | PA |
| 2005-10-31 | 859-317 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LEXINGTON | KY |
| 2005-10-31 | 916-672 | 0–9 XXXall 10 · 6 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | SO PLACER | CA |
| 2005-10-31 | 916-749 | 0–9 XXXall 10 · 6 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | RSVL MAIN | CA |
| 2005-10-31 | 928-797 | not yet reported which blocks → | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | TUBA CITY | AZ |
| 2005-10-28 | 225-302 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BATONROUGE | LA |
| 2005-10-28 | 450-895 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jean | — |
| 2005-10-28 | 450-930 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Blaise | — |
| 2005-10-28 | 506-203 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hillsborough | — |
| 2005-10-28 | 506-204 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Moncton | — |
| 2005-10-28 | 506-205 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Port Elgin | — |
| 2005-10-28 | 506-206 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Fredericton | — |
| 2005-10-28 | 506-208 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oromocto | — |
| 2005-10-28 | 506-209 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Keswick | — |
| 2005-10-28 | 506-213 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dorchester | — |
| 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 |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.