NumberResearchRecent prefix assignments
349 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 |
|---|---|---|---|---|---|---|
| — | 267-852 | 6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN43 | PA |
| — | 267-855 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN45 | PA |
| — | 267-859 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN42 | PA |
| — | 267-860 | 1XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | CARVERSVL | PA |
| — | 267-863 | 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CARVERSVL | PA |
| — | 267-867 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | DUBLIN | PA |
| — | 267-868 | 0XXX1XXX2XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CARVERSVL | PA |
| — | 267-869 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | CARVERSVL | PA |
| — | 267-870 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | DUBLIN | PA |
| — | 267-871 | 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | DUBLIN | PA |
| — | 267-872 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 267-873 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | DUBLIN | PA |
| — | 267-879 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 267-880 | 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | DOYLESTOWN | PA |
| — | 267-881 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | PHLDLPHZN2 | PA |
| — | 267-882 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHLDLPHZN1 | PA |
| — | 267-884 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DOYLESTOWN | PA |
| — | 267-885 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | DOYLESTOWN | PA |
| — | 267-892 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHLDLPHZN2 | PA |
| — | 267-893 | 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | DOYLESTOWN | PA |
| — | 267-895 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | DOYLESTOWN | PA |
| — | 267-897 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | DOYLESTOWN | PA |
| — | 267-898 | 6XXX which blocks → | PAETEC ITEL, LLC | 829J | DOYLESTOWN | PA |
| — | 267-899 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | DOYLESTOWN | PA |
| — | 267-900 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - PA | 547E | PHLDLPHZN3 | PA |
| — | 267-907 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | YARDLEY | PA |
| — | 267-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PA |
| — | 267-912 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | PHPHSBZN40 | PA |
| — | 267-913 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN38 | PA |
| — | 267-914 | 5XXX6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN44 | PA |
| — | 267-915 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN45 | PA |
| — | 267-918 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | PHLDLPHZN1 | PA |
| — | 267-919 | 2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | NEW HOPE | PA |
| — | 267-923 | 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | PENNSBURG | PA |
| — | 267-925 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN33 | PA |
| — | 267-927 | 3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN45 | PA |
| — | 267-929 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | PENNSBURG | PA |
| — | 267-931 | not yet reported which blocks → | ONVOY, LLC - PA | 547E | HARLEYSVL | PA |
| — | 267-932 | 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HARLEYSVL | PA |
| — | 267-933 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | HARLEYSVL | PA |
| — | 267-934 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | PHLDLPHZN1 | PA |
| — | 267-935 | 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | DOYLESTOWN | PA |
| — | 267-937 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - PA | 547E | PHPHSBZN44 | PA |
| — | 267-940 | 6XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PHLDLPHZN1 | PA |
| — | 267-942 | 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN38 | PA |
| — | 267-943 | 1XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN38 | PA |
| — | 267-944 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN38 | PA |
| — | 267-947 | 0–9 XXXall 10 · 3 holders which blocks → | HD CARRIER LLC | 321J | PHPHSBZN38 | PA |
| — | 267-948 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | PHPHSBZN38 | PA |
| — | 267-949 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | PHPHSBZN38 | 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.