NumberResearchRecent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026
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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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 610-861 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-862 | 9XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN31 | PA |
| — | 610-863 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | PEN ARGYL | PA |
| — | 610-864 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | PHPHSBZN28 | PA |
| — | 610-865 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-866 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-867 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-868 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-869 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | WEST GROVE | PA |
| — | 610-870 | 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN14 | PA |
| — | 610-871 | none assigned yet which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ALLENTOWN | PA |
| — | 610-872 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN11 | PA |
| — | 610-873 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | DOWNINGTN | PA |
| — | 610-874 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN11 | PA |
| — | 610-876 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN11 | PA |
| — | 610-877 | 1XXX2XXX5XXX6XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN31 | PA |
| — | 610-878 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN30 | PA |
| — | 610-879 | 0XXX9XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN30 | PA |
| — | 610-882 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | BETHLEHEM | PA |
| — | 610-883 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | W CHESTER | PA |
| — | 610-884 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | EXTON | PA |
| — | 610-885 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | EAGLE | PA |
| — | 610-886 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN22 | PA |
| — | 610-887 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN17 | PA |
| — | 610-888 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN30 | PA |
| — | 610-889 | none assigned yet which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN28 | PA |
| — | 610-891 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN12 | PA |
| — | 610-892 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN12 | PA |
| — | 610-893 | 0XXX5XXX6XXX8XXX · 2 holders which blocks → | AT&T - LOCAL | 7421 | PHPHSBZN28 | PA |
| — | 610-894 | 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | KUTZTOWN | PA |
| — | 610-895 | 0XXX2XXX3XXX4XXX6XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | KUNKLETOWN | PA |
| — | 610-896 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN24 | PA |
| — | 610-897 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHPHSBZN31 | PA |
| — | 610-898 | 2XXX3XXX4XXX · 3 holders which blocks → | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | READING | PA |
| — | 610-900 | 0XXX1XXX4XXX6XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PALMERTON | PA |
| — | 610-902 | not yet reported which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN26 | PA |
| — | 610-903 | 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EXTON | PA |
| — | 610-904 | 0–9 XXXall 10 · 8 holders which blocks → | VERIZON NORTH, INC. - PA (CONTEL) | 0170 | EMMAUS | PA |
| — | 610-905 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | EASTON | PA |
| — | 610-906 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | POTTSTOWN | PA |
| — | 610-907 | not yet reported which blocks → | SPOK, INC. | 6630 | PHPHSBZN31 | PA |
| — | 610-908 | 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → | AT&T - LOCAL | 7421 | PHPHSBZN30 | PA |
| — | 610-909 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN23 | PA |
| — | 610-910 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | AVONDALE | PA |
| — | 610-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 610-912 | not yet reported which blocks → | SPOK, INC. | 6630 | ALLENTOWN | PA |
| — | 610-913 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | MORGANTOWN | PA |
| — | 610-914 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | READING | PA |
| — | 610-915 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHPHSBZN14 | PA |
| — | 610-916 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LEESPORT | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.