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 |
|---|---|---|---|---|---|---|
| — | 602-650 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-651 | 1XXX4XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-652 | 2XXX which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-653 | 1XXX3XXX4XXX7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-655 | 0–9 XXXwhole prefix which blocks → | COMCAST IP PHONE, LLC | 318J | PHOENIX | AZ |
| — | 602-656 | not yet reported which blocks → | SPOK, INC. | 6630 | PHOENIX | AZ |
| — | 602-658 | not yet reported which blocks → | SPOK, INC. | 6630 | PHOENIX | AZ |
| — | 602-659 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-660 | not yet reported which blocks → | SPOK, INC. | 6630 | PHOENIX | AZ |
| — | 602-663 | 6XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-664 | 0XXX3XXX4XXX6XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-665 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-667 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-670 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-672 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-673 | not yet reported which blocks → | SPOK, INC. | 6630 | PHOENIX | AZ |
| — | 602-674 | 7XXX which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-677 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-678 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-679 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-680 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-681 | 6XXX7XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-682 | 5XXX7XXX which blocks → | LEVEL 3 TELECOM OF ARIZONA, LLC - AZ | 7552 | PHOENIX | AZ |
| — | 602-683 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-684 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PHOENIX | AZ |
| — | 602-685 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-686 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-687 | 0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHOENIX | AZ |
| — | 602-688 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-689 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-690 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-692 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-694 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-695 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-696 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-697 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-700 | not yet reported which blocks → | AZ | |||
| — | 602-701 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-702 | 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-703 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-705 | 0XXX which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| — | 602-707 | 6XXX7XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - AZ | 7217 | PHOENIX | AZ |
| — | 602-708 | 5XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-709 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-710 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AZ |
| — | 602-712 | not yet reported which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-713 | none assigned yet which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - AZ | 7217 | PHOENIX | AZ |
| — | 602-714 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| — | 602-716 | 1XXX which blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
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.