NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
Clear Download CSV ↓
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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.