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 |
|---|---|---|---|---|---|---|
| — | 215-505 | not yet reported which blocks → | SPOK, INC. | 6630 | PHLDLPHZN1 | PA |
| — | 215-506 | not yet reported which blocks → | SPOK, INC. | 6630 | PHLDLPHZN1 | PA |
| — | 215-508 | 7XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN3 | PA |
| — | 215-509 | 0XXX1XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN3 | PA |
| — | 215-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 215-512 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-513 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | HARLEYSVL | PA |
| — | 215-514 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHLDLPHZN2 | PA |
| — | 215-516 | 5XXX6XXX7XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-517 | 0XXX9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN34 | PA |
| — | 215-518 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHLDLPHZN2 | PA |
| — | 215-519 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 215-520 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-521 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-522 | not yet reported which blocks → | SPOK, INC. | 6630 | PHPHSBZN38 | PA |
| — | 215-523 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-524 | not yet reported which blocks → | SPOK, INC. | 6630 | PHLDLPHZN1 | PA |
| — | 215-525 | 0XXX7XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHLDLPHZN1 | PA |
| — | 215-526 | 1XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN40 | PA |
| — | 215-527 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | LANSDALE | PA |
| — | 215-528 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN2 | PA |
| — | 215-529 | 8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | QUAKERTOWN | PA |
| — | 215-530 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-533 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-534 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | DOYLESTOWN | PA |
| — | 215-535 | 9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-536 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | QUAKERTOWN | PA |
| — | 215-537 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-538 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | QUAKERTOWN | PA |
| — | 215-539 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN43 | PA |
| — | 215-540 | 6XXX7XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN33 | PA |
| — | 215-541 | 5XXX6XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PENNSBURG | PA |
| — | 215-542 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN33 | PA |
| — | 215-543 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-544 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN37 | PA |
| — | 215-545 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-546 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-547 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN44 | PA |
| — | 215-548 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN3 | PA |
| — | 215-549 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN3 | PA |
| — | 215-551 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-552 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN4 | PA |
| — | 215-553 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-554 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHLDLPHZN4 | PA |
| — | 215-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | PA |
| — | 215-557 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-559 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN33 | PA |
| — | 215-560 | 0XXX8XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-561 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 215-562 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | 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.