NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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, all time — NPA 760
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2011-04-04 | 760-993 | 0–9 XXXall 10 · 5 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | DSERTHTSPG | CA |
| 2009-10-27 | 760-428 | 0–9 XXXall 10 · 5 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | RIDGECREST | CA |
| 2008-01-25 | 760-552 | 0–9 XXXall 10 · 6 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| 2007-07-20 | 760-636 | 0–9 XXXall 10 · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-200 | 6XXX7XXX which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-202 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-227 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | DESERT CTR | CA |
| — | 760-228 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | YUCCA VLY | CA |
| — | 760-240 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VTVL APVY | CA |
| — | 760-241 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| — | 760-242 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VTVL APVY | CA |
| — | 760-243 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| — | 760-244 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VTVL HSPR | CA |
| — | 760-245 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| — | 760-246 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VTVL ADLN | CA |
| — | 760-247 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VTVL APVY | CA |
| — | 760-248 | 0XXX3XXX4XXX8XXX · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | LUCERNEVLY | CA |
| — | 760-249 | 0XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | WRIGHTWOOD | CA |
| — | 760-251 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | DSERTHTSPG | CA |
| — | 760-252 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | BARSTOW | CA |
| — | 760-253 | 0XXX1XXX6XXX8XXX9XXX · 3 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | LENWOOD | CA |
| — | 760-254 | 0XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | BRSW YERM | CA |
| — | 760-255 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | BARSTOW | CA |
| — | 760-256 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 4420 | BARSTOW | CA |
| — | 760-257 | 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | NEWBERRY | CA |
| — | 760-261 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| — | 760-269 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FRONTIER CALIFORNIA INC. | 4420 | VICTORVL | CA |
| — | 760-288 | 1XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | DSERTHTSPG | CA |
| — | 760-318 | 5XXX which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-320 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-321 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-322 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-323 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-324 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-325 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-327 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-328 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA |
| — | 760-329 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | DSERTHTSPG | CA |
| — | 760-340 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-341 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-342 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | INDIO | CA |
| — | 760-343 | 6XXX8XXX9XXX which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-345 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-346 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-347 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | INDIO | CA |
| — | 760-349 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PINYON | CA |
| — | 760-360 | not yet reported which blocks → | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA |
| — | 760-361 | 6XXX9XXX · 2 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | TWNTYNPLMS | CA |
| — | 760-362 | 2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | TWNTYNPLMS | CA |
| — | 760-363 | 0XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | MORONGOVLY | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.