Recent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026
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 |
|---|---|---|---|---|---|---|
| 2020-07-10 | 571-786 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | HERNDON | VA |
| 2020-07-10 | 571-899 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | WSNGTNZN17 | VA |
| 2020-07-10 | 571-946 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | MANASSAS | VA |
| 2020-07-10 | 571-977 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | WSNGTNZN08 | VA |
| 2020-07-10 | 626-889 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | COVINA | CA |
| 2020-07-10 | 628-348 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | FRACTEL, LLC | 965H | BELVEDERE | CA |
| 2020-07-10 | 628-688 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | SNFC CNTRL | CA |
| 2020-07-10 | 628-732 | 0–9 XXXall 10 · 7 holders which blocks → | FRACTEL, LLC | 965H | SNFC JUNPR | CA |
| 2020-07-10 | 628-766 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 7 holders which blocks → | FRACTEL, LLC | 965H | STNSN-BLNS | CA |
| 2020-07-10 | 628-977 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | FRACTEL, LLC | 965H | SNFC MT-EV | CA |
| 2020-07-10 | 650-668 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | LOS ALTOS | CA |
| 2020-07-10 | 657-786 | 0–9 XXXall 10 · 2 holders which blocks → | FRACTEL, LLC | 965H | SANTA ANA | CA |
| 2020-07-10 | 657-799 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | FULLERTON | CA |
| 2020-07-10 | 657-842 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | ANAHEIM | CA |
| 2020-07-10 | 657-867 | 0–9 XXXall 10 · 2 holders which blocks → | FRACTEL, LLC | 965H | HUNTITNBCH | CA |
| 2020-07-10 | 657-946 | 0–9 XXXall 10 · 2 holders which blocks → | FRACTEL, LLC | 965H | SILVERADO | CA |
| 2020-07-10 | 669-732 | 0–9 XXXall 10 · 7 holders which blocks → | FRACTEL, LLC | 965H | SUNNYVALE | CA |
| 2020-07-10 | 747-377 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | VAN NUYS | CA |
| 2020-07-10 | 820-465 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | OXNARD | CA |
| 2020-07-10 | 820-732 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | VNTRA CNTL | CA |
| 2020-07-10 | 820-758 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | SANBARBARA | CA |
| 2020-07-10 | 820-946 | 0–9 XXXall 10 · 8 holders which blocks → | FRACTEL, LLC | 965H | SANTAMARIA | CA |
| 2020-07-10 | 858-599 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | NATIONALCY | CA |
| 2020-07-10 | 858-867 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | SNDG SNDG | CA |
| 2020-07-10 | 870-789 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EL DORADO | AR |
| 2020-07-10 | 949-736 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | NEWPORTBCH | CA |
| 2020-07-10 | 949-744 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | IRVINE | CA |
| 2020-07-10 | 956-733 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | WESLACO | TX |
| 2020-07-10 | 956-955 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | LAREDO | TX |
| 2020-07-10 | 971-380 | 0–9 XXXall 10 · 4 holders which blocks → | CSC WIRELESS, LLC | 425J | PORTLAND | OR |
| 2020-07-09 | 209-539 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA |
| 2020-07-09 | 254-588 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | MERIDIAN | TX |
| 2020-07-09 | 334-746 | 0–9 XXXall 10 · 3 holders which blocks → | CSC WIRELESS, LLC | 425J | MONTGOMERY | AL |
| 2020-07-09 | 346-432 | 0–9 XXXall 10 · 2 holders which blocks → | FRACTEL, LLC | 965H | HSTNSUBURB | TX |
| 2020-07-09 | 346-477 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | HUMBLE | TX |
| 2020-07-09 | 346-488 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | PORTER HTS | TX |
| 2020-07-09 | 346-577 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | HOUSTON | TX |
| 2020-07-09 | 346-955 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | DICKINSON | TX |
| 2020-07-09 | 409-977 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | HTCHCCKSNF | TX |
| 2020-07-09 | 509-504 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | YAKIMA | WA |
| 2020-07-09 | 612-429 | 0–9 XXXall 10 · 3 holders which blocks → | CSC WIRELESS, LLC | 425J | TWINCITIES | MN |
| 2020-07-09 | 647-316 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Toronto | — |
| 2020-07-09 | 659-202 | 0–9 XXXall 10 · 6 holders which blocks → | CSC WIRELESS, LLC | 425J | BIRMINGHAM | AL |
| 2020-07-09 | 682-946 | 3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | RHOME | TX |
| 2020-07-09 | 725-277 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | LAS VEGAS | NV |
| 2020-07-09 | 725-345 | 2XXX4XXX5XXX6XXX · 3 holders which blocks → | FRACTEL, LLC | 965H | GLENDALE | NV |
| 2020-07-09 | 725-356 | 0–9 XXXall 10 · 5 holders which blocks → | FRACTEL, LLC | 965H | JEAN | NV |
| 2020-07-09 | 737-477 | 0–9 XXXall 10 · 7 holders which blocks → | FRACTEL, LLC | 965H | LOCKHART | TX |
| 2020-07-09 | 737-577 | 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | FRACTEL, LLC | 965H | BRIGGS | TX |
| 2020-07-09 | 737-733 | 0–9 XXXall 10 · 2 holders which blocks → | FRACTEL, LLC | 965H | BASTROP | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.