NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| 2003-01-15 | 850-596 | none assigned yet which blocks → | POWERTEL JACKSONVILLE LICENSES, INC. | 7472 | PANAMACITY | FL |
| 2003-01-15 | 863-860 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | LAKELAND | FL |
| 2003-01-14 | 585-257 | 0–9 XXXall 10 · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | HOLCOMB | NY |
| 2003-01-13 | 218-314 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | DETROITLKS | MN |
| 2003-01-13 | 218-317 | 0XXX1XXX3XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | BRAINERD | MN |
| 2003-01-13 | 218-351 | 1XXX8XXX · 2 holders which blocks → | ONVOY, LLC - MN | 184D | MOOSE LAKE | MN |
| 2003-01-13 | 218-383 | 3XXX which blocks → | TERRA NOVA TELECOM INC. | 145J | MAHNOMEN | MN |
| 2003-01-13 | 256-510 | 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | CHILDERSBG | AL |
| 2003-01-13 | 320-303 | 2XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | GLENWOOD | MN |
| 2003-01-13 | 320-326 | 1XXX2XXX3XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | LITCHFIELD | MN |
| 2003-01-13 | 320-331 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCC TELEPHONY LLC | 593K | BROWNTON | MN |
| 2003-01-13 | 320-397 | 2XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | MONTEVIDEO | MN |
| 2003-01-13 | 416-356 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2003-01-13 | 416-357 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2003-01-13 | 507-305 | 8XXX which blocks → | BANDWIDTH.COM CLEC, LLC - MN | 980E | AUSTIN | MN |
| 2003-01-13 | 507-314 | 4XXX6XXX9XXX · 3 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | LUVERNE | MN |
| 2003-01-13 | 507-409 | 4XXX9XXX · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | FARIBAULT | MN |
| 2003-01-13 | 507-415 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | ALBERT LEA | MN |
| 2003-01-13 | 514-606 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2003-01-13 | 661-360 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNCA SGCC | CA |
| 2003-01-13 | 706-690 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | THOMSON | GA |
| 2003-01-13 | 763-238 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | TWINCITIES | MN |
| 2003-01-13 | 803-997 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ORANGEBURG | SC |
| 2003-01-13 | 920-529 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | MANITOWOC | WI |
| 2003-01-10 | 502-598 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | POWERTEL KENTUCKY LICENSES, INC. | 365C | LAWRENCEBG | KY |
| 2003-01-10 | 573-312 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ELSBERRY | MO |
| 2003-01-10 | 573-314 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | FRANKFORD | MO |
| 2003-01-10 | 573-319 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MACKSCREEK | MO |
| 2003-01-10 | 573-321 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ADVANCE | MO |
| 2003-01-10 | 573-340 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WELLSVILLE | MO |
| 2003-01-10 | 573-342 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | RICHWOODS | MO |
| 2003-01-10 | 573-343 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | SOUTHWESTERN BELL | 9533 | PUXICO | MO |
| 2003-01-10 | 573-349 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PATTON | MO |
| 2003-01-10 | 573-352 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | POCAHONTAS | MO |
| 2003-01-10 | 636-323 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ANTONIA | MO |
| 2003-01-10 | 636-334 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | PACIFIC | MO |
| 2003-01-10 | 636-364 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST CLAIR | MO |
| 2003-01-10 | 845-978 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MIDDLETOWN | NY |
| 2003-01-10 | 910-374 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | LUMBERTON | NC |
| 2003-01-10 | 952-334 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TWINCITIES | MN |
| 2003-01-09 | 406-943 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | SIDNEY | MT |
| 2003-01-09 | 406-944 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | MILES CITY | MT |
| 2003-01-09 | 406-946 | 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | LIVINGSTON | MT |
| 2003-01-09 | 406-948 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | GLENDIVE | MT |
| 2003-01-09 | 406-960 | none assigned yet which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | DILLON | MT |
| 2003-01-09 | 406-966 | 1XXX2XXX3XXX5XXX6XXX7XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MT | 9415 | SHELBY | MT |
| 2003-01-09 | 406-968 | 6XXX7XXX8XXX9XXX · 2 holders which blocks → | HD CARRIER LLC | 321J | LEWISTOWN | MT |
| 2003-01-09 | 573-206 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | BEAUFORT | MO |
| 2003-01-09 | 573-207 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | GRAVOIS ML | MO |
| 2003-01-09 | 573-208 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MARBLEHILL | MO |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.