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 484
PAETEC ITEL, LLC 152
LEVEL 3 COMMUNICATIONS, LLC - PA 129
ONVOY, LLC - PA 78
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 62
NEW CINGULAR WIRELESS PCS, LLC - DC 53
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 484-685 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN30 PA
— 484-686 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN30 PA
— 484-687 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN30 PA
— 484-688 1XXX3XXX4XXX6XXX7XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHPHSBZN30 PA
— 484-689 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN30 PA
— 484-690 4XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN30 PA
— 484-691 0XXX1XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DOWNINGTN PA
— 484-692 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J DOWNINGTN PA
— 484-693 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DOWNINGTN PA
— 484-694 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOWNINGTN PA
— 484-696 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 DOWNINGTN PA
— 484-698 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J DOWNINGTN PA
— 484-699 not yet reported which blocks → ONVOY, LLC - PA 547E DOWNINGTN PA
— 484-700 not yet reported which blocks → PA
— 484-701 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 W CHESTER PA
— 484-702 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 OXFORD PA
— 484-707 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
— 484-708 0XXX4XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN24 PA
— 484-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 484-712 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PARKESBURG PA
— 484-715 not yet reported which blocks → ONVOY, LLC - PA 547E PARKESBURG PA
— 484-718 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J PARKESBURG PA
— 484-720 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J AVONDALE PA
— 484-726 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E AVONDALE PA
— 484-727 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AVONDALE PA
— 484-728 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN28 PA
— 484-729 not yet reported which blocks → ONVOY, LLC - PA 547E AVONDALE PA
— 484-730 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E KENNETT SQ PA
— 484-731 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KENNETT SQ PA
— 484-732 0XXX3XXX7XXX8XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J KENNETT SQ PA
— 484-733 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 2 holders which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 KENNETT SQ PA
— 484-734 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J KENNETT SQ PA
— 484-736 2XXX5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J KENNETT SQ PA
— 484-737 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E KENNETT SQ PA
— 484-738 0XXX1XXX2XXX4XXX5XXX9XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 KENNETT SQ PA
— 484-739 not yet reported which blocks → ONVOY, LLC - PA 547E KENNETT SQ PA
— 484-740 0–9 XXXwhole prefix which blocks → HD CARRIER LLC 321J READING PA
— 484-741 0XXX1XXX3XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WEST GROVE PA
— 484-746 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F WEST GROVE PA
— 484-748 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J WEST GROVE PA
— 484-749 not yet reported which blocks → ONVOY, LLC - PA 547E WEST GROVE PA
— 484-751 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → XO COMMUNICATIONS SERVICES, INC. - PA 7341 PHPHSBZN30 PA
— 484-752 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSTOWN PA
— 484-754 6XXX which blocks → PAETEC ITEL, LLC 829J PHPHSBZN30 PA
— 484-756 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 OXFORD PA
— 484-758 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J OXFORD PA
— 484-759 not yet reported which blocks → ONVOY, LLC - PA 547E OXFORD PA
— 484-760 0XXX4XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTTOWN PA
— 484-764 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
— 484-766 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN11 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.