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.
Most active assignees, all time — NPA 215
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 215-563 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-564 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-565 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LANSDALE | PA |
| — | 215-566 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-567 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-568 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-569 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-570 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-571 | 5XXX9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-572 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN34 | PA |
| — | 215-573 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-574 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-575 | 5XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-576 | 2XXX4XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN34 | PA |
| — | 215-577 | not yet reported which blocks → | SPOK, INC. | 6630 | PHLDLPHZN2 | PA |
| — | 215-578 | 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-579 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | NEWTOWN | PA |
| — | 215-580 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-581 | 1XXX7XXX8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-582 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-583 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | NORTHWALES | PA |
| — | 215-584 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | MORRISVL | PA |
| — | 215-585 | 2XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-587 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-588 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-589 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | DOYLESTOWN | PA |
| — | 215-590 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-591 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN33 | PA |
| — | 215-592 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-593 | 1XXX2XXX3XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-594 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | PHLDLPHZN2 | PA |
| — | 215-595 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | YARDLEY | PA |
| — | 215-596 | 0XXX1XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-597 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-598 | 2XXX4XXX5XXX6XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WYCOMBE | PA |
| — | 215-599 | not yet reported which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHLDLPHZN1 | PA |
| — | 215-600 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHLDLPHZN1 | PA |
| — | 215-601 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-602 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-603 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-604 | 8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN41 | PA |
| — | 215-605 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 215-606 | 7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHLDLPHZN1 | PA |
| — | 215-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 215-612 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-613 | 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHLDLPHZN4 | PA |
| — | 215-614 | 3XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-615 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-616 | 7XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | NORTHWALES | PA |
| — | 215-618 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | 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.