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 |
|---|---|---|---|---|---|---|
| 2023-03-24 | 845-937 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | FALLSBURG | NY |
| 2022-03-08 | 845-908 | 0–9 XXXall 10 · 5 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | WASHIGTNVL | NY |
| 2020-10-23 | 845-816 | 0–9 XXXall 10 · 6 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | CHESTER | NY |
| 2015-01-27 | 845-224 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | POUGHKEPSI | NY |
| 2012-03-29 | 845-448 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | ROSENDALE | NY |
| 2009-06-10 | 845-397 | 0–9 XXXall 10 · 6 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | MONTICELLO | NY |
| 2001-10-05 | 845-618 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | SLOATSBURG | NY |
| — | 845-215 | 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | NANUET | NY |
| — | 845-675 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | NYACK | NY |
| — | 845-823 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | LAKELAND | NY |
| — | 845-892 | not yet reported which blocks → | TC SYSTEMS, INC. - NY | 7140 | BEACON | NY |
| — | 845-894 | not yet reported which blocks → | TC SYSTEMS, INC. - NY | 7140 | BEACON | NY |
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.