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 223
ONVOY, LLC - PA 77
D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 27
FRACTEL, LLC 24
TON80 COMMUNICATIONS, LLC 16
ONVOY SPECTRUM, LLC 11
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
2020-01-27 223-229 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
2020-01-27 223-323 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E TERRE HILL PA
2020-01-27 223-332 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - PA 547E LYKENS PA
2019-12-30 223-230 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW OXFORD PA
2019-10-18 223-226 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H MANHEIM PA
2019-10-11 223-225 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J HARISBGZN1 PA
2019-09-05 223-221 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E LANCASTER PA
2019-09-05 223-224 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E MCVEYTOWN PA
2019-08-14 223-220 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E CHAMBERSBG PA
2019-06-26 223-263 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 RED LION PA
2019-04-25 223-217 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LEOLA PA
2019-04-15 223-227 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ELIZABTHTN PA
2019-03-21 223-900 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J HERSHEY PA
2019-03-20 223-218 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 HENSEL PA
2019-03-20 223-219 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 RAWLINSVL PA
2019-03-20 223-837 0XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 EWATERFORD PA
2019-03-20 223-924 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 FAIRFIELD PA
2019-01-28 223-666 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HARISBGZN1 PA
2019-01-04 223-242 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MARIETTA PA
2018-12-11 223-215 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 MOUNT JOY PA
2018-12-11 223-216 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 LANDISVL PA
2018-10-29 223-213 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E DILLSBURG PA
2018-10-29 223-214 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E FRYSTOWN PA
2018-09-28 223-212 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E CARLISLE PA
2018-09-17 223-210 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J DENVER PA
2018-09-04 223-308 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MILLERSVL PA
2018-08-30 223-747 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E EASTBERLIN PA
2018-08-24 223-209 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F MTHOLLYSPG PA
2018-08-15 223-206 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E FAYETTEVL PA
2018-08-15 223-207 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E COLUMBIA PA
2018-08-15 223-208 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E LEWISTOWN PA
2018-07-16 223-205 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARION PA
2018-06-29 223-204 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ICKESBURG PA
2018-06-20 223-203 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F AIRVILLE PA
2018-06-20 223-322 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H HARISBGZN1 PA
2018-06-06 223-200 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2018-06-06 223-400 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 HANOVER PA
2018-06-04 223-800 0–9 XXXall 10 · 2 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 HARISBGZN1 PA
2018-03-27 223-848 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 YORK PA
2017-12-08 223-202 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2017-10-19 223-777 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E STRASBURG PA
2017-10-06 223-222 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PALMYRA PA
2017-09-01 223-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E SHELLSVL PA
2017-08-31 223-444 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E LANCASTER PA
— 223-201 0–9 XXXall 10 · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 BIGLERVL PA
— 223-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT PA
— 223-228 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHAMBERSBG PA
— 223-234 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H HARISBGZN1 PA
— 223-238 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E AIRVILLE PA
— 223-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT 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.