Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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 906

OPENTACT INC. 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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	906-206	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	BARAGA	MI
—	906-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MI
—	906-213	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	BERGLAND	MI
—	906-215	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	CURTIS	MI
—	906-217	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	ESCANABA	MI
—	906-218	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	ENGADINE	MI
—	906-222	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	MARQUETTE	MI
—	906-223	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	MARQUETTE	MI
—	906-224	2XXX which blocks →	MICHIGAN BELL TEL CO	9323	WAKEFIELD	MI
—	906-225	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-226	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-227	none assigned yet which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-228	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-229	3XXX4XXX7XXX8XXX · 4 holders which blocks →	MICHIGAN BELL TEL CO	9323	WAKEFIELD	MI
—	906-233	5XXX6XXX7XXX8XXX · 4 holders which blocks →	MICHIGAN BELL TEL CO	9323	ESCANABA	MI
—	906-234	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	MACKINACIS	MI
—	906-235	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MARQUETTE	MI
—	906-238	not yet reported which blocks →	UPPER PENINSULA TEL. CO.	0732	WATSON	MI
—	906-246	not yet reported which blocks →	UPPER PENINSULA TEL. CO.	0732	FELCH	MI
—	906-248	not yet reported which blocks →	HIAWATHA TEL. CO.	0713	BRIMLEY	MI
—	906-249	none assigned yet which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-250	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MARQUETTE	MI
—	906-251	2XXX3XXX · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	MARQUETTE	MI
—	906-253	3XXX4XXX5XXX8XXX · 3 holders which blocks →	MICHIGAN BELL TEL CO	9323	SALTSTMARI	MI
—	906-255	not yet reported which blocks →	UPPER PENINSULA TEL. CO.	0732	MICHIGMFOR	MI
—	906-261	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLCV - MI	543C	ESCANABA	MI
—	906-262	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	TROUT LAKE	MI
—	906-264	5XXX6XXX · 2 holders which blocks →	MICHIGAN BELL TEL CO	9323	MARQUETTE	MI
—	906-265	8XXX which blocks →	MICHIGAN BELL TEL CO	9323	IRON RIVER	MI
—	906-266	0XXX1XXX2XXX6XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	BREVORT	MI
—	906-270	0XXX1XXX2XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	KINROSS	MI
—	906-271	not yet reported which blocks →	NEW CELL DBA CELLCOM	6692	IRON MT	MI
—	906-272	not yet reported which blocks →	UPPER PENINSULA TEL. CO.	0732	FENCERIVER	MI
—	906-274	not yet reported which blocks →	HIAWATHA TEL. CO.	0713	ECKERMAN	MI
—	906-277	0XXX1XXX2XXX6XXX7XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	CHANNING	MI
—	906-278	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	BRIMLEY	MI
—	906-279	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	BRUCECRSNG	MI
—	906-283	not yet reported which blocks →	BRIGHTSPEED OF UPPER MICHIGAN, INC.	0689	GULLIVER	MI
—	906-288	not yet reported which blocks →	UPPER PENINSULA TEL. CO.	0732	DONKEN	MI
—	906-289	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MICHIGAN BELL TEL CO	9323	KEWEENAW	MI
—	906-292	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	MICHIGAN BELL TEL CO	9323	BREVORT	MI
—	906-293	7XXX which blocks →	MICHIGAN BELL TEL CO	9323	NEWBERRY	MI
—	906-296	2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	MICHIGAN BELL TEL CO	9323	LAKELINDEN	MI
—	906-297	not yet reported which blocks →	BRIGHTSPEED OF UPPER MICHIGAN, INC.	0689	DE TOUR	MI
—	906-299	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOUGHTON	MI
—	906-302	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	IRON MT	MI
—	906-303	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	CALUMET	MI
—	906-304	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	CARNEY	MI
—	906-305	not yet reported which blocks →	RANGE TELECOMMUNICATIONS	6695	CEDARVILLE	MI
—	906-307	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	IRONWOOD	MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.