NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 267
PAETEC ITEL, LLC 134
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 123
LEVEL 3 COMMUNICATIONS, LLC - PA 94
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 82
NEW CINGULAR WIRELESS PCS, LLC - DC 68
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-10-03 267-610 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN4 PA
2023-09-12 267-835 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2023-09-07 267-724 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN44 PA
2023-09-07 267-856 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN3 PA
2023-09-05 267-267 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN34 PA
2023-09-05 267-412 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN4 PA
2023-09-05 267-445 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN39 PA
2023-09-05 267-484 0XXX2XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - PA 547E GREEN LANE PA
2023-09-05 267-717 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E QUAKERTOWN PA
2023-09-05 267-814 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN41 PA
2023-09-01 267-302 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MORRISVL PA
2023-05-26 267-215 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN4 PA
2021-03-17 267-660 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J LANSDALE PA
2021-02-28 267-946 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN1 PA
2021-02-12 267-964 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2020-09-11 267-936 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PERKASIE PA
2020-09-03 267-921 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN38 PA
2020-08-11 267-910 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN3 PA
2020-04-20 267-996 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN1 PA
2020-04-13 267-807 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PHLDLPHZN1 PA
2020-02-21 267-891 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 LANSDALE PA
2020-02-05 267-862 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN2 PA
2020-02-05 267-957 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN4 PA
2019-12-13 267-962 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN39 PA
2019-11-19 267-631 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHPHSBZN39 PA
2019-10-25 267-876 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
2019-10-22 267-874 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN3 PA
2019-10-21 267-853 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN43 PA
2019-10-09 267-865 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J PHLDLPHZN1 PA
2019-10-07 267-846 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN1 PA
2019-10-03 267-817 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA
2019-08-07 267-917 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN40 PA
2019-08-06 267-894 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 DOYLESTOWN PA
2019-06-26 267-993 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2019-06-20 267-857 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN1 PA
2019-06-10 267-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J PENNSBURG PA
2019-05-08 267-796 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2019-04-16 267-637 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2019-01-18 267-806 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2018-12-17 267-845 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D PHLDLPHZN4 PA
2018-12-13 267-667 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PHLDLPHZN1 PA
2018-09-19 267-854 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-09-04 267-624 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN2 PA
2018-08-15 267-896 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-07-13 267-764 0–9 XXXall 10 · 5 holders which blocks → ADVANCED TELECOM SOLUTIONS, LLC 181J PHLDLPHZN1 PA
2018-06-04 267-842 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC. - PA 3806 DOYLESTOWN PA
2018-04-30 267-985 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 QUAKERTOWN PA
2018-03-28 267-621 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOYLESTOWN PA
2017-12-18 267-547 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN39 PA
2017-11-30 267-951 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.