Recent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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 |
|---|---|---|---|---|---|---|
| — | 575-584 | not yet reported which blocks → | E.N.M.R. TEL COOP | 2262 | VAUGHN | NM |
| — | 575-585 | not yet reported which blocks → | TULAROSA BASIN TELEPHONE CO., INC. | 2265 | TULAROSA | NM |
| — | 575-586 | 3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | QUESTA | NM |
| — | 575-587 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | PENASCO | NM |
| — | 575-588 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | 1193 | TIERRAAMRL | NM |
| — | 575-589 | 8XXX which blocks → | QWEST CORPORATION | 9636 | SNA TERESA | NM |
| — | 575-590 | 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SILVERCITY | NM |
| — | 575-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | NM | |
| — | 575-621 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | LAS CRUCES | NM |
| — | 575-622 | not yet reported which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-623 | not yet reported which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-624 | not yet reported which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-625 | not yet reported which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-627 | not yet reported which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-628 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #1 DBA WINDSTREAM COMM SW | 1164 | CARLSBAD | NM |
| — | 575-630 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | 1193 | RUIDOSO | NM |
| — | 575-631 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOBBS | NM |
| — | 575-633 | not yet reported which blocks → | E.N.M.R. TEL COOP | 2262 | NARA VISA | NM |
| — | 575-636 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAS CRUCES | NM |
| — | 575-637 | 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX which blocks → | QWEST CORPORATION | 9636 | ROSWELL | NM |
| — | 575-638 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | 1193 | GALLINA | NM |
| — | 575-639 | 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAS CRUCES | NM |
| — | 575-640 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | LAS CRUCES | NM |
| — | 575-641 | not yet reported which blocks → | E.N.M.R. TEL COOP | 2262 | TREMENTINA | NM |
| — | 575-642 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAS CRUCES | NM |
| — | 575-643 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RATON | NM |
| — | 575-644 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | LAS CRUCES | NM |
| — | 575-645 | not yet reported which blocks → | QWEST CORPORATION | 9636 | LAS CRUCES | NM |
| — | 575-646 | not yet reported which blocks → | QWEST CORPORATION | 9636 | LAS CRUCES | NM |
| — | 575-647 | not yet reported which blocks → | QWEST CORPORATION | 9636 | LAS CRUCES | NM |
| — | 575-648 | not yet reported which blocks → | TULAROSA BASIN TELEPHONE CO., INC. | 2265 | CARRIZOZO | NM |
| — | 575-649 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | LAS CRUCES | NM |
| — | 575-650 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | LAS CRUCES | NM |
| — | 575-653 | not yet reported which blocks → | PENASCO VALLEY TEL. COOP., INC. | 2270 | HONDO | NM |
| — | 575-666 | not yet reported which blocks → | LA JICARITA RURAL TEL. COOP., INC. | 2263 | WAGONMOUND | NM |
| — | 575-668 | not yet reported which blocks → | LA JICARITA RURAL TEL. COOP., INC. | 2263 | WAGONMOUND | NM |
| — | 575-671 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | 1193 | RUIDOSO | NM |
| — | 575-673 | not yet reported which blocks → | E.N.M.R. TEL COOP | 2262 | MOSQUERO | NM |
| — | 575-675 | not yet reported which blocks → | ROOSEVELT COUNTY RURAL TEL. COOP., INC. | 2272 | MILNESAND | NM |
| — | 575-676 | not yet reported which blocks → | LEACO RURAL TEL. COOP., INC. | 2264 | MALJAMAR | NM |
| — | 575-677 | not yet reported which blocks → | PENASCO VALLEY TEL. COOP., INC. | 2270 | LOCO HILLS | NM |
| — | 575-678 | not yet reported which blocks → | QWEST CORPORATION | 9636 | LAS CRUCES | NM |
| — | 575-679 | not yet reported which blocks → | QWEST CORPORATION | 9636 | LAS CRUCES | NM |
| — | 575-682 | not yet reported which blocks → | TULAROSA BASIN TELEPHONE CO., INC. | 2265 | CLOUDCROFT | NM |
| — | 575-683 | not yet reported which blocks → | E.N.M.R. TEL COOP | 2262 | SO CLOVIS | NM |
| — | 575-684 | not yet reported which blocks → | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | 1193 | CANJILON | NM |
| — | 575-687 | not yet reported which blocks → | PENASCO VALLEY TEL. COOP., INC. | 2270 | MAYHILL | NM |
| — | 575-693 | 0XXX2XXX7XXX8XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | CLOVIS | NM |
| — | 575-700 | not yet reported which blocks → | NM | |||
| — | 575-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | NM |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.