NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-04-14 | 210-500 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX |
| 2022-04-14 | 220-227 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ATHENS | OH |
| 2022-04-14 | 239-381 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NO NAPLES | FL |
| 2022-04-14 | 251-392 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | ATMORE | AL |
| 2022-04-14 | 272-259 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWMILFORD | PA |
| 2022-04-14 | 309-909 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | MOLINE | IL |
| 2022-04-14 | 309-913 | 0–9 XXXall 10 · 3 holders which blocks → | COMMIO, LLC | 939H | CANTON | IL |
| 2022-04-14 | 507-816 | 0XXX1XXX8XXX9XXX · 2 holders which blocks → | PEERLESS NETWORK OF MINNESOTA, LLC - MN | 107F | ROCHESTER | MN |
| 2022-04-14 | 540-936 | 0XXX1XXX3XXX · 2 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | HARRISONBG | VA |
| 2022-04-14 | 575-765 | 7XXX which blocks → | ONVOY, LLC - NM | 206F | CARRIZOZO | NM |
| 2022-04-14 | 689-277 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SANFORD | FL |
| 2022-04-14 | 689-278 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | ORLANDO | FL |
| 2022-04-14 | 763-352 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | TWINCITIES | MN |
| 2022-04-14 | 878-250 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CRIDERSCOR | PA |
| 2022-04-14 | 989-208 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | SAGINAW | MI |
| 2022-04-13 | 236-506 | not yet reported which blocks → | Iristel Inc. | 154E | West Vancouver | — |
| 2022-04-13 | 302-609 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW CASTLE | DE |
| 2022-04-13 | 447-231 | 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → | COMMIO, LLC | 939H | CHATHAM | IL |
| 2022-04-13 | 447-232 | 0–9 XXXall 10 · 4 holders which blocks → | COMMIO, LLC | 939H | DANVILLE | IL |
| 2022-04-13 | 540-978 | 0XXX1XXX2XXX9XXX · 3 holders which blocks → | FRACTEL, LLC | 965H | LURAY | VA |
| 2022-04-13 | 672-761 | not yet reported which blocks → | Iristel Inc. | 154E | Aldergrove | — |
| 2022-04-13 | 672-903 | not yet reported which blocks → | Iristel Inc. | 154E | Gulf Islands | — |
| 2022-04-13 | 672-910 | not yet reported which blocks → | Iristel Inc. | 154E | South Kamloops | — |
| 2022-04-13 | 754-283 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | FTLAUDERDL | FL |
| 2022-04-13 | 864-791 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | ANDERSON | SC |
| 2022-04-13 | 864-795 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | CLEMSON | SC |
| 2022-04-13 | 872-867 | 0–9 XXXall 10 · 4 holders which blocks → | COMMIO, LLC | 939H | CHICGOZN03 | IL |
| 2022-04-12 | 236-417 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Lillooet | — |
| 2022-04-12 | 249-347 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Severn Bridge | — |
| 2022-04-12 | 341-214 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HRCUL-RODE | CA |
| 2022-04-12 | 346-554 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2022-04-12 | 365-962 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Cayuga | — |
| 2022-04-12 | 368-200 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Calgary | — |
| 2022-04-12 | 368-300 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Calgary | — |
| 2022-04-12 | 368-400 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Calgary | — |
| 2022-04-12 | 368-500 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Banff | — |
| 2022-04-12 | 368-700 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Canmore | — |
| 2022-04-12 | 368-777 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Bragg Creek | — |
| 2022-04-12 | 368-800 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Banff | — |
| 2022-04-12 | 368-888 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Calgary | — |
| 2022-04-12 | 425-380 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KIRKLAND | WA |
| 2022-04-12 | 470-986 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - GA | 8392 | ATLANTA | GA |
| 2022-04-12 | 657-573 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CYPRESS | CA |
| 2022-04-12 | 657-574 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2022-04-12 | 661-571 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LANCASTER | CA |
| 2022-04-12 | 669-310 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | CA |
| 2022-04-12 | 779-357 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LEAF RIVER | IL |
| 2022-04-11 | 209-904 | 0–9 XXXall 10 · 7 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | LODI | CA |
| 2022-04-11 | 209-906 | 0–9 XXXall 10 · 6 holders which blocks → | UTILITY TELECOM GROUP, LLC - CA | 9262 | MERCED | CA |
| 2022-04-11 | 223-284 | 0–9 XXXall 10 · 4 holders which blocks → | D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE | 6846 | YORK | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.