Recent prefix assignments
334 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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2020-09-08 | 276-966 | 0–9 XXXall 10 · 7 holders which blocks → | FRACTEL, LLC | 965H | HILLSVILLE | VA |
| 2020-09-08 | 276-977 | 6XXX7XXX9XXX · 3 holders which blocks → | FRACTEL, LLC | 965H | FT BLACKMR | VA |
| 2020-09-08 | 313-998 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLCV - MI | 543C | DETROITZN1 | MI |
| 2020-09-08 | 326-356 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | BELFAST | OH |
| 2020-09-08 | 332-237 | 0–9 XXXall 10 · 3 holders which blocks → | IP HORIZON LLC | 515J | NWYRCYZN01 | NY |
| 2020-09-08 | 380-345 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | HILLIARD | OH |
| 2020-09-08 | 385-362 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KAYSVILLE | UT |
| 2020-09-08 | 385-369 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | KAYSVILLE | UT |
| 2020-09-08 | 413-389 | 0–9 XXXall 10 · 2 holders which blocks → | IP HORIZON LLC | 515J | SPRINGFLD | MA |
| 2020-09-08 | 424-447 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | INGLEWOOD | CA |
| 2020-09-08 | 425-477 | 0–9 XXXall 10 · 4 holders which blocks → | VONAGE AMERICA LLC | 197D | ISSAQUAH | WA |
| 2020-09-08 | 431-244 | not yet reported which blocks → | Iristel Inc. | 154E | Stonewall | — |
| 2020-09-08 | 434-241 | 0–9 XXXall 10 · 5 holders which blocks → | IP HORIZON LLC | 515J | LYNCHBURG | VA |
| 2020-09-08 | 434-399 | 3XXX9XXX · 2 holders which blocks → | FRACTEL, LLC | 965H | RENAN | VA |
| 2020-09-08 | 434-622 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FRACTEL, LLC | 965H | CREWE | VA |
| 2020-09-08 | 434-633 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | FRACTEL, LLC | 965H | CONCORD | VA |
| 2020-09-08 | 434-644 | 0XXX1XXX2XXX4XXX5XXX6XXX · 5 holders which blocks → | FRACTEL, LLC | 965H | BURKEVILLE | VA |
| 2020-09-08 | 434-655 | 0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | BRODNAX | VA |
| 2020-09-08 | 434-722 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | FRACTEL, LLC | 965H | BARNESVL | VA |
| 2020-09-08 | 434-844 | 0–9 XXXall 10 · 7 holders which blocks → | FRACTEL, LLC | 965H | ALLWOOD | VA |
| 2020-09-08 | 434-899 | 0XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | FRACTEL, LLC | 965H | BLACKRIDGE | VA |
| 2020-09-08 | 434-966 | 0XXX1XXX6XXX9XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | BEECHWOOD | VA |
| 2020-09-08 | 442-331 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ESCONDIDO | CA |
| 2020-09-08 | 442-332 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALM SPG | CA |
| 2020-09-08 | 463-529 | 1XXX2XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → | FRACTEL, LLC | 965H | TRAFALGAR | IN |
| 2020-09-08 | 463-842 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | WHITELAND | IN |
| 2020-09-08 | 470-650 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA | GA |
| 2020-09-08 | 506-699 | not yet reported which blocks → | Iristel Inc. | 154E | Shippagan | — |
| 2020-09-08 | 507-739 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANKATO | MN |
| 2020-09-08 | 540-647 | 0–9 XXXall 10 · 5 holders which blocks → | IP HORIZON LLC | 515J | ROANOKE | VA |
| 2020-09-08 | 540-930 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - VA | 138E | STAFFORD | VA |
| 2020-09-08 | 562-518 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LONG BEACH | CA |
| 2020-09-08 | 567-758 | 0XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | FREMONT | OH |
| 2020-09-08 | 567-786 | 2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | REDHAW | OH |
| 2020-09-08 | 567-842 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → | FRACTEL, LLC | 965H | LAKEVILLE | OH |
| 2020-09-08 | 573-630 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 6123 | BONNETERRE | MO |
| 2020-09-08 | 607-370 | 0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → | IP HORIZON LLC | 515J | BINGHAMTON | NY |
| 2020-09-08 | 608-367 | 0–9 XXXall 10 · 3 holders which blocks → | STRATUS NETWORKS | 495J | BELOIT | WI |
| 2020-09-08 | 619-418 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2020-09-08 | 623-265 | 0–9 XXXall 10 · 3 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | PHOENIX | AZ |
| 2020-09-08 | 661-506 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2020-09-08 | 680-216 | 0–9 XXXall 10 · 3 holders which blocks → | IP HORIZON LLC | 515J | SYRACUSE | NY |
| 2020-09-08 | 716-306 | 0–9 XXXall 10 · 4 holders which blocks → | IP HORIZON LLC | 515J | BUFFALO | NY |
| 2020-09-08 | 737-275 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | GEORGETOWN | TX |
| 2020-09-08 | 754-255 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - FL | 982E | POMPANOBCH | FL |
| 2020-09-08 | 757-974 | 0–9 XXXall 10 · 5 holders which blocks → | IP HORIZON LLC | 515J | NRFOLKZON2 | VA |
| 2020-09-08 | 774-436 | 0–9 XXXall 10 · 4 holders which blocks → | IP HORIZON LLC | 515J | WORCESTER | MA |
| 2020-09-08 | 779-296 | 1XXX2XXX · 2 holders which blocks → | STRATUS NETWORKS | 495J | LONG POINT | IL |
| 2020-09-08 | 804-613 | 0–9 XXXall 10 · 6 holders which blocks → | IP HORIZON LLC | 515J | RICHMOND | VA |
| 2020-09-08 | 808-470 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - HI | 9414 | HONOLULU | HI |
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.