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 |
|---|---|---|---|---|---|---|
| — | 610-285 | 1XXX3XXX7XXX8XXX9XXX which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | NEWSMITHVL | PA |
| — | 610-298 | 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | NEWTRIPOLI | PA |
| — | 610-488 | 2XXX3XXX4XXX5XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | BERNVILLE | PA |
| — | 610-589 | 0XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | WOMELSDORF | PA |
| — | 610-693 | 0XXX2XXX4XXX7XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA | 0169 | ROBESONIA | PA |
| — | 610-756 | 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON NORTH, INC. - PA (QUAKER ST) | 0201 | KEMPTON | PA |
| — | 610-904 | 0–9 XXXall 10 · 8 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | EMMAUS | PA |
| — | 610-965 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | EMMAUS | PA |
| — | 610-966 | not yet reported which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | EMMAUS | PA |
| — | 610-967 | 7XXX8XXX which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | EMMAUS | 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.