Recent prefix assignments
375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-11-21 | 843-978 | 0XXX1XXX2XXX6XXX7XXX · 3 holders which blocks → | SOUTH CAROLINA NET, INC. - SC | 1784 | JEFFERSON | SC |
| 2017-11-21 | 873-729 | not yet reported which blocks → | Iristel Inc. | 154E | Amos | — |
| 2017-11-20 | 315-909 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | NEWARK | NY |
| 2017-11-20 | 339-218 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | HANOVER | MA |
| 2017-11-20 | 365-695 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-11-20 | 365-696 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-11-20 | 365-697 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-11-20 | 365-698 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-11-20 | 516-407 | 0–9 XXXall 10 · 6 holders which blocks → | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN01 | NY |
| 2017-11-20 | 778-924 | not yet reported which blocks → | Iristel Inc. | 154E | Burns Lake | — |
| 2017-11-20 | 778-946 | not yet reported which blocks → | Iristel Inc. | 154E | Kelowna | — |
| 2017-11-20 | 984-243 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | DURHAM | NC |
| 2017-11-17 | 216-232 | 0–9 XXXall 10 · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | INDEPNDNCE | OH |
| 2017-11-17 | 440-587 | 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | BRECKSVL | OH |
| 2017-11-17 | 440-588 | 0–9 XXXall 10 · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | TRINITY | OH |
| 2017-11-17 | 701-941 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | FARGO | ND |
| 2017-11-16 | 214-970 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX |
| 2017-11-16 | 270-552 | 0XXX1XXX2XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | CALVERT CY | KY |
| 2017-11-16 | 435-522 | 0–9 XXXall 10 · 7 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | ST GEORGE | UT |
| 2017-11-16 | 479-278 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | ROGERS | AR |
| 2017-11-16 | 484-877 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | READING | PA |
| 2017-11-16 | 561-334 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOCA RATON | FL |
| 2017-11-16 | 579-265 | not yet reported which blocks → | TELUS Quebec | 2243 | Huntingdon | — |
| 2017-11-16 | 581-220 | not yet reported which blocks → | TELUS Quebec | 2243 | Ville Degelis | — |
| 2017-11-16 | 786-572 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HOMESTEAD | FL |
| 2017-11-16 | 843-935 | not yet reported which blocks → | SOUTH CAROLINA NET, INC. - SC | 1784 | HENDERSNVL | SC |
| 2017-11-15 | 240-572 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2017-11-15 | 346-283 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | STAFFORD | TX |
| 2017-11-15 | 346-284 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | BEACH CITY | TX |
| 2017-11-15 | 431-478 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Winnipeg | — |
| 2017-11-15 | 639-877 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Weyburn | — |
| 2017-11-15 | 639-878 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | North Battleford | — |
| 2017-11-15 | 639-884 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Yorkton | — |
| 2017-11-15 | 639-885 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Macklin | — |
| 2017-11-15 | 774-356 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FRAMINGHAM | MA |
| 2017-11-15 | 778-974 | not yet reported which blocks → | Distributel | 081E | Victoria | — |
| 2017-11-14 | 224-273 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | ARLIGTNHTS | IL |
| 2017-11-14 | 309-317 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ROCKISLAND | IL |
| 2017-11-14 | 480-795 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | PHOENIX | AZ |
| 2017-11-14 | 530-599 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - CA | 649C | MARYSVILLE | CA |
| 2017-11-14 | 551-269 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | RAMSEY | NJ |
| 2017-11-14 | 587-634 | not yet reported which blocks → | Bell West Inc. | 2933 | Grimshaw | — |
| 2017-11-14 | 587-636 | not yet reported which blocks → | Bell West Inc. | 2933 | Morinville | — |
| 2017-11-14 | 587-637 | not yet reported which blocks → | Bell West Inc. | 2933 | Nanton | — |
| 2017-11-14 | 587-638 | not yet reported which blocks → | Bell West Inc. | 2933 | Picture Butte | — |
| 2017-11-14 | 587-639 | not yet reported which blocks → | Bell West Inc. | 2933 | Redwater | — |
| 2017-11-14 | 605-970 | 5XXX6XXX7XXX8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARTIN | SD |
| 2017-11-14 | 716-399 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | TONAWANDA | NY |
| 2017-11-14 | 720-768 | 0–9 XXXall 10 · 3 holders which blocks → | COMMIO, LLC | 022H | DENVER | CO |
| 2017-11-14 | 778-947 | not yet reported which blocks → | TELUS | 8086 | Whistler | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.