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 541

QWEST CORPORATION 184

ONVOY, LLC - OR 70

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 69

T-MOBILE USA, INC. 54

CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 53

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
—	541-812	not yet reported which blocks →	QWEST CORPORATION	9638	ALBANY	OR
—	541-814	not yet reported which blocks →	SPOK, INC.	6630	MEDFORD	OR
—	541-815	none assigned yet which blocks →	UNITED STATES CELLULAR - OR	6349	BEND	OR
—	541-819	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	NEWPORT	OR
—	541-820	not yet reported which blocks →	OREGON TEL. CORP.	2389	PRAIRIE CY	OR
—	541-821	none assigned yet which blocks →	UNITED STATES CELLULAR - OR	6349	MEDFORD	OR
—	541-822	not yet reported which blocks →	QWEST CORPORATION	9638	BLUE RIVER	OR
—	541-823	5XXX6XXX7XXX · 3 holders which blocks →	QWEST CORPORATION	9638	ONTARIO	OR
—	541-824	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OR	750E	COQUILLE	OR
—	541-825	1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	DAYS CREEK	OR
—	541-826	not yet reported which blocks →	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR	4520	WHITE CITY	OR
—	541-828	8XXX which blocks →	ASOTIN TEL CO	2404	FLORA TROY	OR
—	541-829	2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CORVALLIS	OR
—	541-830	not yet reported which blocks →	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR	4520	WHITE CITY	OR
—	541-831	not yet reported which blocks →	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR	4520	WHITE CITY	OR
—	541-832	4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	GLENDALE	OR
—	541-836	not yet reported which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2360	DRAIN	OR
—	541-837	1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	AZALEA	OR
—	541-839	2XXX5XXX9XXX · 3 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	CANYONVL	OR
—	541-840	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MEDFORD	OR
—	541-842	0XXX which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7172	MEDFORD	OR
—	541-846	2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	PROVOTMPHY	OR
—	541-847	not yet reported which blocks →	MONROE TEL. CO.	2385	MONROE	OR
—	541-849	not yet reported which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2395	YONCALLA	OR
—	541-850	not yet reported which blocks →	QWEST CORPORATION	9638	KLAMATHFLS	OR
—	541-851	1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks →	QWEST CORPORATION	9638	KLAMATHFLS	OR
—	541-853	not yet reported which blocks →	CASCADE UTILITIES, INC.	2371	MEDICALSPG	OR
—	541-855	3XXX4XXX6XXX · 3 holders which blocks →	QWEST CORPORATION	9638	GOLD HILL	OR
—	541-856	not yet reported which blocks →	CASCADE UTILITIES, INC.	2371	HAINES	OR
—	541-857	not yet reported which blocks →	QWEST CORPORATION	9638	MEDFORD	OR
—	541-858	not yet reported which blocks →	QWEST CORPORATION	9638	MEDFORD	OR
—	541-860	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	MYRTLE CRK	OR
—	541-861	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	METROPCS, INC.	5562	MILTONFWTR	OR
—	541-862	0XXX1XXX3XXX4XXX5XXX6XXX · 5 holders which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	PROVOTMPHY	OR
—	541-863	none assigned yet which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	MYRTLE CRK	OR
—	541-864	0XXX9XXX · 2 holders which blocks →	QWEST CORPORATION	9638	MEDFORD	OR
—	541-865	1XXX6XXX8XXX · 2 holders which blocks →	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR	4520	BUTTEFALLS	OR
—	541-866	1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	WOLF CREEK	OR
—	541-867	not yet reported which blocks →	PIONEER TEL. COOPERATIVE	2393	SOUTHBEACH	OR
—	541-868	4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7172	EUGENE	OR
—	541-869	not yet reported which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2360	HUNTINGTON	OR
—	541-870	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	EUGENE	OR
—	541-874	1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER	3401	RIDDLE	OR
—	541-875	not yet reported which blocks →	PIONEER TEL. COOPERATIVE	2393	CHITWOOD	OR
—	541-877	not yet reported which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2360	DURKEE	OR
—	541-878	6XXX which blocks →	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR	4520	SHADY COVE	OR
—	541-880	3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks →	QWEST CORPORATION	9638	KLAMATHFLS	OR
—	541-881	not yet reported which blocks →	QWEST CORPORATION	9638	ONTARIO	OR
—	541-882	not yet reported which blocks →	QWEST CORPORATION	9638	KLAMATHFLS	OR
—	541-883	not yet reported which blocks →	QWEST CORPORATION	9638	KLAMATHFLS	OR

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.