NumberResearchRecent prefix assignments
375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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, last 30 days
New assignments by month
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Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 412-408 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON3 | PA |
| — | 412-409 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN12 | PA |
| — | 412-411 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 412-412 | not yet reported which blocks → | PA | |||
| — | 412-414 | none assigned yet which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON5 | PA |
| — | 412-415 | 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | PTTSBGZON2 | PA |
| — | 412-417 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PTTSBGZON1 | PA |
| — | 412-418 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PTTSBGZON1 | PA |
| — | 412-419 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PTTSBGZON1 | PA |
| — | 412-420 | 0XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-421 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-422 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-423 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN20 | PA |
| — | 412-424 | 1XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PTGSBNZN15 | PA |
| — | 412-426 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN20 | PA |
| — | 412-427 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PTTSBGZON1 | PA |
| — | 412-429 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN14 | PA |
| — | 412-431 | 9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-432 | 6XXX8XXX9XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-433 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-434 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-435 | 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PTGSBNZN20 | PA |
| — | 412-437 | 3XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON6 | PA |
| — | 412-438 | 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON7 | PA |
| — | 412-440 | 3XXX5XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PTTSBGZON6 | PA |
| — | 412-441 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON8 | PA |
| — | 412-442 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-443 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| — | 412-444 | 5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PTTSBGZON7 | PA |
| — | 412-445 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| — | 412-446 | 3XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PTGSBNZN14 | PA |
| — | 412-447 | 1XXX5XXX6XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PTGSBNZN19 | PA |
| — | 412-448 | 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON5 | PA |
| — | 412-449 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PTTSBGZON3 | PA |
| — | 412-450 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON8 | PA |
| — | 412-451 | 0–9 XXXall 10 · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON5 | PA |
| — | 412-454 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-455 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN19 | PA |
| — | 412-456 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-457 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN22 | PA |
| — | 412-459 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON2 | PA |
| — | 412-460 | 2XXX3XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN10 | PA |
| — | 412-461 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON5 | PA |
| — | 412-462 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON5 | PA |
| — | 412-464 | 8XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON5 | PA |
| — | 412-466 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN10 | PA |
| — | 412-467 | 0XXX6XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
| — | 412-469 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN10 | PA |
| — | 412-470 | 6XXX which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTGSBNZN15 | PA |
| — | 412-471 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PTTSBGZON1 | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.