NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

3 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, last 30 days — NPA 219
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
ONVOY, LLC - IN 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
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
— 219-874 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 MICHIGANCY IN
— 219-877 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 MICHIGANCY IN
— 219-878 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 MICHIGANCY IN
— 219-879 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 MICHIGANCY IN
— 219-880 3XXX5XXX6XXX7XXX8XXX9XXX which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-881 8XXX which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-882 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-883 1XXX2XXX3XXX5XXX6XXX9XXX · 6 holders which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-884 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-885 3XXX4XXX8XXX9XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-886 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-887 9XXX which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-888 0XXX8XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-895 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
— 219-898 2XXX4XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 MICHIGANCY IN
— 219-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 219-921 none assigned yet which blocks → FRONTIER NORTH, INC.. - IN 0772 CHESTERTON IN
— 219-922 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HIGHLAND IN
— 219-923 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HIGHLAND IN
— 219-924 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HIGHLAND IN
— 219-926 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 CHESTERTON IN
— 219-928 none assigned yet which blocks → FRONTIER NORTH, INC.. - IN 0772 CHESTERTON IN
— 219-929 none assigned yet which blocks → FRONTIER NORTH, INC.. - IN 0772 CHESTERTON IN
— 219-931 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HAMMOND IN
— 219-932 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HAMMOND IN
— 219-933 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HAMMOND IN
— 219-934 7XXX which blocks → INDIANA BELL TEL CO INC 9325 HIGHLAND IN
— 219-937 7XXX which blocks → INDIANA BELL TEL CO INC 9325 HAMMOND IN
— 219-938 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-939 1XXX2XXX4XXX5XXX7XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-940 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 HOBART IN
— 219-942 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 HOBART IN
— 219-944 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-945 2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 HOBART IN
— 219-947 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 HOBART IN
— 219-949 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-950 not yet reported which blocks → IN
— 219-954 4XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRANCESVL IN
— 219-956 1XXX6XXX · 2 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 WHEATFIELD IN
— 219-958 not yet reported which blocks → SOUTH BEND IN
— 219-959 not yet reported which blocks → IN
— 219-961 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 HIGHLAND IN
— 219-962 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 LAKE STA IN
— 219-963 6XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 LAKE STA IN
— 219-972 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 HIGHLAND IN
— 219-973 0XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 HOBART IN
— 219-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT IN
— 219-977 3XXX which blocks → INDIANA BELL TEL CO INC 9325 GARY IN
— 219-979 1XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
— 219-980 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GARY IN

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.