NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| — | 940-246 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | ARGYLE | TX |
| — | 940-262 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | ARGYLE | TX |
| — | 940-265 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | AUBREY | TX |
| — | 940-266 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | AUBREY | TX |
| — | 940-269 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | LAKEDALLAS | TX |
| — | 940-270 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | LAKEDALLAS | TX |
| — | 940-271 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
| — | 940-272 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
| — | 940-326 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | LAKEDALLAS | TX |
| — | 940-339 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | JUSTIN | TX |
| — | 940-441 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | JUSTIN | TX |
| — | 940-442 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
| — | 940-487 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | BARTONVL | TX |
| — | 940-488 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | AUBREY | TX |
| — | 940-489 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | ARGYLE | TX |
| — | 940-535 | 4XXX5XXX7XXX8XXX · 3 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
| — | 940-536 | 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
| — | 940-698 | 3XXX8XXX · 2 holders which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | PONDER | TX |
| — | 940-724 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | JUSTIN | TX |
| — | 940-725 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | BARTONVL | TX |
| — | 940-728 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | BARTONVL | TX |
| — | 940-827 | not yet reported which blocks → | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DENTON | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.