NumberResearchRecent prefix assignments
358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 267-653 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | NORTHWALES | PA |
| — | 267-654 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NORTHWALES | PA |
| — | 267-655 | 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | NORTHWALES | PA |
| — | 267-656 | 1XXX4XXX6XXX7XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | NORTHWALES | PA |
| — | 267-657 | 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | NORTHWALES | PA |
| — | 267-659 | 1XXX2XXX3XXX4XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | NORTHWALES | PA |
| — | 267-661 | 0XXX4XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | NORTHWALES | PA |
| — | 267-663 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LANSDALE | PA |
| — | 267-664 | 5XXX6XXX7XXX8XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | LANSDALE | PA |
| — | 267-666 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - PA | 547E | PHLDLPHZN1 | PA |
| — | 267-669 | 0–9 XXXall 10 · 6 holders which blocks → | EXIANT COMMUNICATIONS LLC | 114J | PHLDLPHZN4 | PA |
| — | 267-671 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 267-672 | 7XXX which blocks → | PAETEC ITEL, LLC | 829J | PHLDLPHZN4 | PA |
| — | 267-675 | 6XXX7XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHLDLPHZN1 | PA |
| — | 267-677 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | NORTHWALES | PA |
| — | 267-681 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN41 | PA |
| — | 267-682 | 2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN32 | PA |
| — | 267-684 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN40 | PA |
| — | 267-685 | 0XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | NEWTOWN | PA |
| — | 267-689 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHPHSBZN43 | PA |
| — | 267-692 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN34 | PA |
| — | 267-693 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 267-695 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LINELXNGTN | PA |
| — | 267-697 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | MORRISVL | PA |
| — | 267-700 | not yet reported which blocks → | PA | |||
| — | 267-705 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN33 | PA |
| — | 267-706 | not yet reported which blocks → | PAETEC COMMUNICATIONS, INC. - PA | 4153 | PHPHSBZN37 | PA |
| — | 267-708 | 3XXX5XXX6XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN33 | PA |
| — | 267-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 267-712 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | PHPHSBZN42 | PA |
| — | 267-714 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | NEW HOPE | PA |
| — | 267-715 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN38 | PA |
| — | 267-718 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | LANSDALE | PA |
| — | 267-719 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WYCOMBE | PA |
| — | 267-722 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN37 | PA |
| — | 267-723 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN37 | PA |
| — | 267-725 | 1XXX4XXX6XXX7XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN37 | PA |
| — | 267-727 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | PHPHSBZN37 | PA |
| — | 267-728 | 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN37 | PA |
| — | 267-729 | 0–9 XXXall 10 · 5 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN37 | PA |
| — | 267-731 | 1XXX6XXX7XXX which blocks → | COMCAST IP PHONE, LLC | 318J | PHLDLPHZN4 | PA |
| — | 267-732 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN39 | PA |
| — | 267-733 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | QUAKERTOWN | PA |
| — | 267-735 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | PHPHSBZN34 | PA |
| — | 267-738 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 267-740 | 0XXX2XXX4XXX6XXX7XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | NEW HOPE | PA |
| — | 267-741 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | NEW HOPE | PA |
| — | 267-743 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | NEW HOPE | PA |
| — | 267-744 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | NEW HOPE | PA |
| — | 267-747 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | NEW HOPE | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.