NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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 |
|---|---|---|---|---|---|---|
| 2022-01-24 | 448-895 | 0XXX1XXX8XXX · 2 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | PANAMACITY | FL |
| 2022-01-24 | 475-382 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BRANFORD | CT |
| 2022-01-24 | 581-474 | not yet reported which blocks → | Iristel Inc. | 154E | Donnacona | — |
| 2022-01-24 | 585-608 | 0XXX2XXX7XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | ANGELICA | NY |
| 2022-01-24 | 585-609 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WELLSVILLE | NY |
| 2022-01-24 | 619-848 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DEL MAR | CA |
| 2022-01-24 | 639-307 | not yet reported which blocks → | Iristel Inc. | 154E | Lanigan | — |
| 2022-01-24 | 754-284 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLLYWOOD | FL |
| 2022-01-24 | 806-846 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | LUBBOCK | TX |
| 2022-01-24 | 828-661 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HICKORY | NC |
| 2022-01-24 | 838-723 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SCHENCTADY | NY |
| 2022-01-24 | 854-894 | 0–9 XXXall 10 · 3 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | MYRTLE BCH | SC |
| 2022-01-24 | 862-393 | 0XXX1XXX2XXX3XXX9XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NJ | 118F | MT FREEDOM | NJ |
| 2022-01-24 | 867-288 | not yet reported which blocks → | Bell Mobility | 6574 | Fort Simpson | — |
| 2022-01-24 | 873-702 | not yet reported which blocks → | Iristel Inc. | 154E | Drummondville | — |
| 2022-01-24 | 873-774 | not yet reported which blocks → | Iristel Inc. | 154E | Rouyn-Noranda | — |
| 2022-01-24 | 908-554 | 0XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | LEBANON | NJ |
| 2022-01-24 | 908-556 | 0XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NJ | 118F | CALIFON | NJ |
| 2022-01-24 | 945-242 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | FORNEY | TX |
| 2022-01-24 | 951-607 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAKEVIEWNU | CA |
| 2022-01-24 | 959-936 | 0XXX4XXX5XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LYME | CT |
| 2022-01-21 | 223-297 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | PALMYRA | PA |
| 2022-01-21 | 231-402 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLCV - MI | 543C | MUSKEGON | MI |
| 2022-01-21 | 236-309 | not yet reported which blocks → | Iristel Inc. | 154E | Fort St. John | — |
| 2022-01-21 | 272-663 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MOSCOW | PA |
| 2022-01-21 | 272-664 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MINERSVL | PA |
| 2022-01-21 | 423-853 | 0–9 XXXall 10 · 3 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | JOHNSON CY | TN |
| 2022-01-21 | 424-544 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | EL SEGUNDO | CA |
| 2022-01-21 | 425-541 | 0–9 XXXall 10 · 3 holders which blocks → | PEERLESS NETWORK OF WASHINGTON, LLC - WA | 159F | EVERETT | WA |
| 2022-01-21 | 438-907 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2022-01-21 | 470-924 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - GA | 8392 | ATLANTA NW | GA |
| 2022-01-21 | 616-372 | 0XXX2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → | ONVOY, LLCV - MI | 543C | COOPERSVL | MI |
| 2022-01-21 | 639-565 | not yet reported which blocks → | Iristel Inc. | 154E | Lumsden | — |
| 2022-01-21 | 639-969 | not yet reported which blocks → | Iristel Inc. | 154E | Kipling | — |
| 2022-01-21 | 669-766 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | MORGANHILL | CA |
| 2022-01-21 | 828-895 | 0XXX1XXX8XXX9XXX · 3 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | ASHEVILLE | NC |
| 2022-01-21 | 930-895 | 0XXX1XXX8XXX9XXX · 2 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | EVANSVILLE | IN |
| 2022-01-21 | 939-384 | 0–9 XXXwhole prefix which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-391 | 0XXX1XXX2XXX3XXX4XXX9XXX which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-21 | 984-312 | 0–9 XXXall 10 · 3 holders which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | DURHAM | NC |
| 2022-01-20 | 218-645 | 0XXX2XXX5XXX6XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MN | 980E | COOK | MN |
| 2022-01-20 | 218-660 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MN | 980E | CARLTON | MN |
| 2022-01-20 | 223-624 | 0XXX4XXX5XXX6XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NEWBURG | PA |
| 2022-01-20 | 228-895 | 0–9 XXXall 10 · 2 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | BILOXI | MS |
| 2022-01-20 | 272-442 | 0XXX1XXX2XXX6XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MCKEANSBG | PA |
| 2022-01-20 | 321-382 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - FL | 937C | TITUSVILLE | FL |
| 2022-01-20 | 321-387 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | COCOA | FL |
| 2022-01-20 | 332-258 | 0–9 XXXall 10 · 3 holders which blocks → | LEAP TELECOM, LLC | 616J | NWYRCYZN01 | NY |
| 2022-01-20 | 367-381 | not yet reported which blocks → | Videotron Ltd. | 328F | Quebec | — |
| 2022-01-20 | 412-827 | 0XXX1XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | PTGSBNZN21 | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.