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.
Most active assignees, all time — NPA 610
New assignments by month
Sep 2026
Aug 2026
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May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-05-15 | 610-752 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| 2023-07-10 | 610-920 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| 2018-08-31 | 610-412 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PUGHTOWN | PA |
| 2012-01-25 | 610-674 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| 2006-03-08 | 610-741 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| 2002-09-27 | 610-739 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-209 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-306 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-308 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-316 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-322 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-324 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-329 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-390 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-392 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-393 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-405 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-413 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-416 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-451 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-462 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-505 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-506 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-509 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-513 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-517 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| — | 610-533 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-547 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-554 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-597 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-657 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-659 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| — | 610-662 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| — | 610-698 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-703 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-704 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-733 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-743 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-745 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| — | 610-750 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-751 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-761 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-762 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 610-763 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-764 | 2XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-780 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-781 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-804 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-812 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-823 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
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.