NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
— 715-760 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ROBERTS WI
— 715-761 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICE LAKE WI
— 715-762 none assigned yet which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 PARK FALLS WI
— 715-763 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 GRANDVIEW WI
— 715-764 0XXX1XXX4XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHETEK WI
— 715-765 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 MASON WI
— 715-766 4XXX5XXX6XXX7XXX · 3 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 SPRINGBRK WI
— 715-767 8XXX which blocks → BRIGHTSPEED OF NORTHERN WISCONSIN, LLC 0956 OGEMA WI
— 715-768 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALSAMLAKE WI
— 715-769 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 BUTTERNUT WI
— 715-770 0XXX which blocks → TERRA NOVA TELECOM INC. 145J EAU CLAIRE WI
— 715-772 none assigned yet which blocks → WEST WISCONSIN TELCOM COOP., INC. 0971 SPRINGLAKE WI
— 715-774 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 PORT WING WI
— 715-775 not yet reported which blocks → NEW CELL DBA CELLCOM 6692 MARINETTE WI
— 715-776 1XXX6XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERCER WI
— 715-777 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PELICAN LK WI
— 715-778 not yet reported which blocks → SPRING VALLEY TEL. CO., INC. 0953 SPRING VLY WI
— 715-779 1XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 BAYFIELD WI
— 715-783 1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIB LAKE WI
— 715-784 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRANDON WI
— 715-785 5XXX which blocks → MIDWAY TEL. CO. 0909 MEDFORD WI
— 715-787 0XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 GRESHAM WI
— 715-789 0XXX4XXX5XXX7XXX · 4 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0841 HARMONY WI
— 715-791 1XXX4XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEBB LAKE WI
— 715-792 not yet reported which blocks → HAGER TELECOM, INC. 0889 HAGER CITY WI
— 715-793 0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 BOWLER WI
— 715-794 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 NAMEKGONLK WI
— 715-795 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 BARNES WI
— 715-796 1XXX3XXX4XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC 0950 HAMMOND WI
— 715-797 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 EAU CLAIRE WI
— 715-798 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 CABLE WI
— 715-799 2XXX which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 KESHENA WI
— 715-805 not yet reported which blocks → METRO SOUTHWEST PCS, LLP 9759 MERRILL WI
— 715-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 715-819 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 NEILLSVL WI
— 715-821 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIVERFALLS WI
— 715-822 0XXX1XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0841 CUMBERLAND WI
— 715-823 0XXX which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 CLINTONVL WI
— 715-824 not yet reported which blocks → AMHERST TEL. CO. 0843 AMHERST WI
— 715-825 not yet reported which blocks → LAKELAND COMMUNICATIONS GROUP, LLC 0902 MILLTOWN WI
— 715-826 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAWKINS WI
— 715-827 1XXX2XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CORNELL WI
— 715-828 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EAU CLAIRE WI
— 715-829 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EAU CLAIRE WI
— 715-830 none assigned yet which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-831 not yet reported which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-832 not yet reported which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-833 not yet reported which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-834 not yet reported which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-835 not yet reported which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.