NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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, last 30 days
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 480-982 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-983 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-984 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-985 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-986 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-987 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-988 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-990 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-991 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-994 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 480-998 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 483-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST AL
— 483-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-700 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-950 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-958 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-959 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 484-200 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J CHESTERSPG PA
— 484-202 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CHESTERSPG PA
— 484-203 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CHESTERSPG PA
— 484-204 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHESTERSPG PA
— 484-206 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E CHESTERSPG PA
— 484-207 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - PA 547E CHESTERSPG PA
— 484-208 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 CHESTERSPG PA
— 484-209 not yet reported which blocks → ONVOY, LLC - PA 547E CHESTERSPG PA
— 484-210 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H MORTONVL PA
— 484-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 484-212 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 EAGLE PA
— 484-214 not yet reported which blocks → ONVOY, LLC - PA 547E ALLENTOWN PA
— 484-217 9XXX which blocks → SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 NEWTRIPOLI PA
— 484-220 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J READING PA
— 484-221 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
— 484-223 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ALLENTOWN PA
— 484-224 4XXX6XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
— 484-225 7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
— 484-226 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ALLENTOWN PA
— 484-227 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN12 PA
— 484-228 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 GLENMOORE PA
— 484-229 not yet reported which blocks → ONVOY, LLC - PA 547E ALLENTOWN PA
— 484-231 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN30 PA
— 484-232 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 EMMAUS PA
— 484-233 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MENDENHALL PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.