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 484
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| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 484-928 | 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | PHOENIXVL | PA |
| — | 484-929 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| — | 484-931 | 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ROYERSFORD | PA |
| — | 484-932 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ROYERSFORD | PA |
| — | 484-933 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → | ONVOY, LLC - PA | 547E | ROYERSFORD | PA |
| — | 484-935 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | BETHLEHEM | PA |
| — | 484-938 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | ROYERSFORD | PA |
| — | 484-939 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | ROYERSFORD | PA |
| — | 484-940 | 0–9 XXXall 10 · 8 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | POTTSTOWN | PA |
| — | 484-941 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CTSI, INC. - PA | 7513 | POTTSTOWN | PA |
| — | 484-942 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | POTTSTOWN | PA |
| — | 484-944 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | POTTSTOWN | PA |
| — | 484-945 | 2XXX3XXX4XXX · 3 holders which blocks → | WINDSTREAM D & E SYSTEMS, INC. - PA | 4114 | POTTSTOWN | PA |
| — | 484-946 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | POTTSTOWN | PA |
| — | 484-948 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | POTTSTOWN | PA |
| — | 484-949 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | POTTSTOWN | PA |
| — | 484-950 | not yet reported which blocks → | PA | |||
| — | 484-951 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | ALLENTOWN | PA |
| — | 484-952 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN28 | PA |
| — | 484-953 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN14 | PA |
| — | 484-956 | 2XXX3XXX5XXX7XXX which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN29 | PA |
| — | 484-958 | not yet reported which blocks → | PA | |||
| — | 484-959 | not yet reported which blocks → | PA | |||
| — | 484-961 | 0XXX1XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | COLLEGEVL | PA |
| — | 484-962 | 0XXX1XXX2XXX3XXX5XXX8XXX · 5 holders which blocks → | HD CARRIER LLC | 321J | SCHWENKSVL | PA |
| — | 484-964 | 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | SCHWENKSVL | PA |
| — | 484-968 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | SCHWENKSVL | PA |
| — | 484-969 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | SCHWENKSVL | PA |
| — | 484-970 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → | ONVOY, LLC - PA | 547E | COLLEGEVL | PA |
| — | 484-971 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | COLLEGEVL | PA |
| — | 484-972 | 0–9 XXXall 10 · 4 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | COLLEGEVL | PA |
| — | 484-973 | 0XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | COLLEGEVL | PA |
| — | 484-974 | 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | COLLEGEVL | PA |
| — | 484-975 | 0XXX1XXX2XXX3XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | COLLEGEVL | PA |
| — | 484-976 | not yet reported which blocks → | PA | |||
| — | 484-977 | 0XXX1XXX3XXX4XXX8XXX · 3 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | COLLEGEVL | PA |
| — | 484-978 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | COLLEGEVL | PA |
| — | 484-979 | 0XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | COLLEGEVL | PA |
| — | 484-984 | 3XXX5XXX6XXX7XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ROYERSFORD | PA |
| — | 484-985 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | PUGHTOWN | PA |
| — | 484-986 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | PUGHTOWN | PA |
| — | 484-989 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PUGHTOWN | PA |
| — | 484-990 | 0–9 XXXwhole prefix which blocks → | HD CARRIER LLC | 321J | BETHLEHEM | PA |
| — | 484-991 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CENTER PT | PA |
| — | 484-992 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | ONVOY, LLC - PA | 547E | CENTER PT | PA |
| — | 484-993 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | CENTER PT | PA |
| — | 484-994 | 2XXX4XXX7XXX8XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | CENTER PT | PA |
| — | 484-996 | 1XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | ONVOY, LLC - PA | 547E | PHOENIXVL | PA |
| — | 484-997 | 0XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CENTER PT | PA |
| — | 484-998 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | HD CARRIER LLC | 321J | CENTER PT | 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.