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 |
|---|---|---|---|---|---|---|
| — | 830-223 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | HANCOCK | TX |
| — | 830-226 | 2XXX4XXX7XXX · 3 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SATTLER | TX |
| — | 830-227 | 0XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | CRANESMILL | TX |
| — | 830-228 | 0XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SMITHSOVLY | TX |
| — | 830-229 | 0XXX1XXX2XXX7XXX9XXX · 3 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | KENBERG | TX |
| — | 830-230 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SABINA | TX |
| — | 830-236 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | WESTHOFF | TX |
| — | 830-336 | 6XXX7XXX · 2 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | KENBERG | TX |
| — | 830-373 | not yet reported which blocks → | VALLEY TEL. COOP., INC. | 2159 | FOWLERTON | TX |
| — | 830-378 | not yet reported which blocks → | VALLEY TEL. COOP., INC. | 2159 | MILLETT | TX |
| — | 830-424 | 8XXX which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | LEESVILLE | TX |
| — | 830-437 | 3XXX which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | COST | TX |
| — | 830-438 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | BULVERDE | TX |
| — | 830-466 | not yet reported which blocks → | VALLEY TEL. COOP., INC. | 2159 | SAN MIGUEL | TX |
| — | 830-537 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SABINA | TX |
| — | 830-540 | 1XXX5XXX which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SATURN | TX |
| — | 830-639 | none assigned yet which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | KINGSBURY | TX |
| — | 830-676 | not yet reported which blocks → | VALLEY TEL. COOP., INC. | 2159 | ARTESIWLLS | TX |
| — | 830-755 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | BALCONES | TX |
| — | 830-788 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | WAELDER | TX |
| — | 830-839 | none assigned yet which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | ROCKYCREEK | TX |
| — | 830-885 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SMITHSOVLY | TX |
| — | 830-899 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | CRANESMILL | TX |
| — | 830-904 | 5XXX8XXX9XXX · 2 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SMITHSOVLY | TX |
| — | 830-905 | 5XXX which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | CRANESMILL | TX |
| — | 830-906 | 9XXX which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | HANCOCK | TX |
| — | 830-907 | 6XXX9XXX · 2 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SATTLER | TX |
| — | 830-935 | 5XXX8XXX · 2 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | HANCOCK | TX |
| — | 830-964 | 1XXX8XXX · 2 holders which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | SATTLER | TX |
| — | 830-980 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | BULVERDE | TX |
| — | 830-981 | not yet reported which blocks → | GUADALUPE VALLEY TEL. COOP., INC. | 2083 | BALCONES | 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.