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 715
NEW CINGULAR WIRELESS PCS, LLC - IL 100
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 99
FRONTIER NORTH INC. - WI 55
WISCONSIN BELL INC 41
CHARTER IP ENABLED SERVICES, LLC 36
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 715-877 4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 1159 FALL CREEK WI
— 715-878 7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 1159 CLEGHORN WI
— 715-879 2XXX7XXX · 2 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 ELK MOUND WI
— 715-882 0XXX1XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → FRONTIER NORTH INC. - WI 0886 WHITE LAKE WI
— 715-884 1XXX8XXX9XXX · 3 holders which blocks → CENTRAL STATE TEL. CO 0859 PITTSVILLE WI
— 715-885 not yet reported which blocks → WOOD COUNTY TEL. CO. 0974 PT EDWARDS WI
— 715-886 not yet reported which blocks → WOOD COUNTY TEL. CO. 0974 NEKOOSA WI
— 715-887 not yet reported which blocks → WOOD COUNTY TEL. CO. 0974 PT EDWARDS WI
— 715-893 5XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 HURLEY WI
— 715-895 4XXX5XXX6XXX7XXX8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 EAU CLAIRE WI
— 715-897 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHFIELD WI
— 715-898 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARSHFIELD WI
— 715-906 not yet reported which blocks → METRO SOUTHWEST PCS, LLP 9759 RHINELANDR WI
— 715-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 715-921 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLEASON WI
— 715-922 2XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OGEMA WI
— 715-923 not yet reported which blocks → NEW CELL DBA CELLCOM 6692 MARINETTE WI
— 715-924 5XXX6XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0922 CHETEK WI
— 715-925 not yet reported which blocks → CTC TELCOM, INC. 7998 CHETEK WI
— 715-926 8XXX which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0912 MONDOVI WI
— 715-927 not yet reported which blocks → NEW CELL DBA CELLCOM 6692 CRIVITZ WI
— 715-929 none assigned yet which blocks → NEW CELL DBA CELLCOM 6692 PEMBINE WI
— 715-934 6XXX9XXX · 2 holders which blocks → NORVADO, INC. 8615 HAYWARD WI
— 715-935 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLAINFIELD WI
— 715-938 not yet reported which blocks → NEW CELL DBA CELLCOM 6692 MARINETTE WI
— 715-939 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPOONER WI
— 715-940 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F SHAWANO WI
— 715-942 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WAUPACA WI
— 715-943 not yet reported which blocks → INDIANHEAD TEL. CO. 0936 EXELAND WI
— 715-945 not yet reported which blocks → INDIANHEAD TEL. CO. 0936 RADISSON WI
— 715-946 not yet reported which blocks → NELSON COMMUNICATIONS COOPERATIVE 0918 GILMANTON WI
— 715-948 not yet reported which blocks → AMERY TELECOM, INC. 0842 CLAYTON WI
— 715-949 not yet reported which blocks → CHIBARDUN TEL. COOP., INC. 0861 RIDGELAND WI
— 715-950 not yet reported which blocks → WI
— 715-958 not yet reported which blocks → EAU CLAIRE WI
— 715-959 not yet reported which blocks → EAU CLAIRE WI
— 715-962 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 COLFAX WI
— 715-963 0XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 1159 HIXTON WI
— 715-964 0XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 1159 ALMACENTER WI
— 715-967 not yet reported which blocks → CITIZENS TEL. COOP., INC. 0863 LONG LAKE WI
— 715-975 0XXX6XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 EAU CLAIRE WI
— 715-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 715-979 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WI 225C ASHLAND WI
— 715-983 not yet reported which blocks → TRI-COUNTY TEL. COOP., INC. 0960 PIGEON FLS WI
— 715-984 not yet reported which blocks → TRI-COUNTY TEL. COOP., INC. 0960 NORTHFIELD WI
— 715-985 6XXX which blocks → TRI-COUNTY TEL. COOP., INC. 0960 INDEPNDNCE WI
— 715-986 1XXX5XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0970 TURTLELAKE WI
— 715-988 0XXX1XXX2XXX4XXX · 4 holders which blocks → NEW CELL DBA CELLCOM 6692 NIAGARA WI
— 715-995 0XXX1XXX4XXX5XXX7XXX · 5 holders which blocks → TWILIO INTERNATIONAL, INC. 506J AUGUSTA WI

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.