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
2019-03-01 484-630 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F W CHESTER PA
2018-11-19 484-783 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BOYERTOWN PA
2018-10-29 484-543 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E ROBESONIA PA
2018-09-25 484-613 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F LEHIGHTON PA
2018-08-15 484-917 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E BERNVILLE PA
2018-05-02 484-878 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J READING PA
2018-04-30 484-822 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2018-03-19 484-656 0–9 XXXall 10 · 4 holders which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 ALLENTOWN PA
2018-03-13 484-460 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2017-12-07 484-781 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 ALLENTOWN PA
2017-11-16 484-877 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 READING PA
2017-09-18 484-677 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BANGOR PA
2017-09-18 484-912 0XXX1XXX5XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PEN ARGYL PA
2017-09-14 484-867 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 EASTON PA
2017-05-22 484-907 0XXX1XXX2XXX3XXX4XXX7XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 FERNDALE PA
2017-05-05 484-484 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E BETHLEHEM PA
2017-01-09 484-705 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
2016-12-28 484-659 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 READING PA
2016-11-16 484-861 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2016-11-14 484-627 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 EASTON PA
2016-11-14 484-657 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 COATESVL PA
2016-09-27 484-516 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 READING PA
2016-09-23 484-513 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 READING PA
2016-08-31 484-510 0–9 XXXall 10 · 7 holders which blocks → NUSO, LLC 551G BETHLEHEM PA
2016-08-30 484-473 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G W CHESTER PA
2016-08-10 484-587 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSTOWN PA
2016-07-14 484-360 0XXX2XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM CONESTOGA, INC. 0162 BIRDSBORO PA
2016-06-02 484-954 0–9 XXXall 10 · 6 holders which blocks → WIDE VOICE, LLC - PA 218H ALLENTOWN PA
2016-06-01 484-757 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2016-05-25 484-655 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2016-05-24 484-512 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 READING PA
2016-04-04 484-591 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 EASTON PA
2016-01-27 484-869 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J READING PA
2016-01-07 484-507 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FLEETWOOD PA
2015-12-22 484-456 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BETHLEHEM PA
2015-12-16 484-379 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E BETHLEHEM PA
2015-12-14 484-850 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H PHPHSBZN30 PA
2015-12-11 484-506 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2015-12-11 484-773 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E ALLENTOWN PA
2015-10-06 484-502 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2015-09-18 484-569 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 COATESVL PA
2015-08-28 484-658 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2015-05-27 484-987 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J READING PA
2015-04-14 484-747 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BETHLEHEM PA
2015-04-10 484-644 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 POTTSTOWN PA
2015-03-24 484-915 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J AVONDALE PA
2015-01-28 484-983 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J W CHESTER PA
2014-12-12 484-965 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2014-10-28 484-795 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - PA 547E ALLENTOWN PA
2014-10-27 484-649 0–9 XXXwhole prefix which blocks → CTSI, INC. - PA 7513 ALLENTOWN 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.