NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 351-210 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HUDSON MA
— 351-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-213 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D TEMPLETON MA
— 351-226 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → FIVE9, INC. 598J WESTFORD MA
— 351-235 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
— 351-245 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ACTON MA
— 351-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-333 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D HARVARD MA
— 351-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-444 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D IPSWICH MA
— 351-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-554 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 351-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST MA
— 351-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-700 not yet reported which blocks → MA
— 351-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-777 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D HUBBARDSTN MA
— 351-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-814 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 351-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D MERRIMAC MA
— 351-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 351-920 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LOWELL MA
— 351-931 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 351-940 not yet reported which blocks → MA
— 351-950 not yet reported which blocks → MA
— 351-958 not yet reported which blocks → MA
— 351-959 not yet reported which blocks → MA
— 351-976 not yet reported which blocks → MA
— 351-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D MANCHESTER MA
— 352-202 not yet reported which blocks → BAKER'S ELECTRONICS & COMM., INC. 6617 GAINESVL FL
— 352-205 4XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LADY LAKE FL
— 352-206 4XXX5XXX6XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DADE CITY FL
— 352-207 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 OCALA FL
— 352-208 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCALA FL
— 352-209 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCALA FL
— 352-210 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 OLD TOWN FL
— 352-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 352-212 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CRYSTALRIV FL
— 352-213 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GAINESVL FL
— 352-214 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GAINESVL FL
— 352-215 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GAINESVL FL
— 352-216 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 OCALA FL
— 352-217 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 LEESBURG FL
— 352-219 none assigned yet which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 GAINESVL FL
— 352-220 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CRYSTALRIV FL
— 352-221 6XXX7XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CHIEFLAND FL
— 352-222 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GAINESVL FL
— 352-223 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLERMONT FL
— 352-224 0XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GAINESVL FL
— 352-225 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 GAINESVL FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.