NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026
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 757
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-06-01 | 757-385 | 0–9 XXXwhole prefix which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-219 | 2XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-238 | 0XXX1XXX5XXX6XXX7XXX · 3 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | CRITTENDEN | VA |
| — | 757-242 | 1XXX2XXX7XXX8XXX · 4 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | WINDSOR | VA |
| — | 757-255 | 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | CHUCKATUCK | VA |
| — | 757-267 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | DENDRON | VA |
| — | 757-294 | 1XXX4XXX8XXX9XXX · 4 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | SURRY | VA |
| — | 757-312 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-356 | 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | SMITHFIELD | VA |
| — | 757-357 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | SMITHFIELD | VA |
| — | 757-365 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | SMITHFIELD | VA |
| — | 757-368 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-382 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-421 | none assigned yet which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON6 | VA |
| — | 757-426 | 4XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-427 | 4XXX8XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-430 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-432 | 0XXX2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON6 | VA |
| — | 757-436 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-468 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-482 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-516 | 0XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | FRANKLIN | VA |
| — | 757-546 | 4XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-547 | 6XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-548 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-549 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON1 | VA |
| — | 757-562 | 9XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | FRANKLIN | VA |
| — | 757-563 | 1XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-569 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | FRANKLIN | VA |
| — | 757-653 | 1XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | COURTLAND | VA |
| — | 757-654 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | BOYKINS | VA |
| — | 757-657 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | HOLLAND | VA |
| — | 757-716 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-721 | 8XXX which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | NRFOLKZON4 | VA |
| — | 757-859 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | IVOR | VA |
| — | 757-866 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | CLAREMONT | VA |
| — | 757-899 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | WAKEFIELD | VA |
| — | 757-924 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | WAKEFIELD | VA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.