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 |
|---|---|---|---|---|---|---|
| 2024-12-18 | 781-991 | 0XXX8XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MEDFORD | MA |
| 2015-12-30 | 781-660 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WEYMOUTH | MA |
| 2012-06-19 | 781-206 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWELL | MA |
| 2002-10-15 | 781-738 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWELL | MA |
| 2001-04-24 | 781-856 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWOOD | MA |
| 2001-04-24 | 781-929 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWOOD | MA |
| — | 781-249 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WALTHAM | MA |
| — | 781-366 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DEDHAM | MA |
| — | 781-640 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOBURN | MA |
| — | 781-689 | 1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KINGSTON | MA |
| — | 781-690 | 8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DEDHAM | MA |
| — | 781-724 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WEYMOUTH | MA |
| — | 781-775 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WALTHAM | MA |
| — | 781-864 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WALTHAM | MA |
| — | 781-956 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORWOOD | MA |
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.