NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| — | 401-846 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NEWPORT | RI |
| — | 401-847 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NEWPORT | RI |
| — | 401-848 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NEWPORT | RI |
| — | 401-849 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NEWPORT | RI |
| — | 401-851 | 0XXX4XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NEWPORT | RI |
| — | 401-861 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-863 | 0XXX4XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-865 | 0XXX6XXX8XXX9XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-867 | 0XXX1XXX2XXX7XXX9XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-868 | 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-874 | 0XXX1XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | NARRAGNSTT | RI |
| — | 401-884 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENWICH | RI |
| — | 401-885 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENWICH | RI |
| — | 401-886 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | GREENWICH | RI |
| — | 401-888 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | RI |
| — | 401-920 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-934 | 6XXX8XXX · 2 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | SCITUATE | RI |
| — | 401-941 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-942 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-943 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-944 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-946 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | PROVIDENCE | RI |
| — | 401-949 | 6XXX which blocks → | VERIZON NEW ENGLAND INC. | 9102 | CENTREDALE | RI |
| — | 401-960 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | RI |
| — | 401-968 | 4XXX7XXX8XXX · 3 holders which blocks → | VERIZON NEW ENGLAND INC. | 9102 | WGLOCESTER | RI |
| — | 401-970 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | RI |
| — | 401-986 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | RI |
| — | 401-987 | not yet reported which blocks → | VERIZON NEW ENGLAND INC. | 9102 | XXXXXXXXXX | RI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.