Recent prefix assignments

1 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 503

ONVOY, LLC - OR 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
—	503-652	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-653	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-654	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-655	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-656	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-657	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-658	9XXX which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-659	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-660	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-661	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-662	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	YAMHILL	OR
—	503-663	8XXX which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-665	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-666	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-667	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-668	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-669	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-670	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-671	none assigned yet which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-672	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-673	1XXX2XXX3XXX6XXX8XXX9XXX which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-674	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	GRESHAM	OR
—	503-675	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-676	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OR	7531	GRESHAM	OR
—	503-677	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-678	9XXX which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2395	AURORA	OR
—	503-679	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PORTLAND	OR
—	503-680	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PORTLAND	OR
—	503-681	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-682	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-683	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OR	7531	CLACKAMAS	OR
—	503-684	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-685	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-686	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OR	7531	BEAVERTON	OR
—	503-687	not yet reported which blocks →	PACIFIC WAVE COMMUNICATIONS	4697	MCMINNVL	OR
—	503-688	0XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7172	PORTLAND	OR
—	503-689	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SALEM	OR
—	503-690	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-691	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-692	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-693	not yet reported which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	BEAVERTON	OR
—	503-694	3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks →	CENTURYTEL OF OREGON, INC. DBA CENTURYLINK	2395	CHARBONNEU	OR
—	503-695	not yet reported which blocks →	CASCADE UTILITIES, INC.	2371	CORBETT	OR
—	503-696	not yet reported which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BEAVERTON	OR
—	503-697	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-698	0XXX which blocks →	ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4323	STFRD-SNDY	OR
—	503-699	not yet reported which blocks →	QWEST CORPORATION	9638	CLACKAMAS	OR
—	503-700	not yet reported which blocks →				OR
—	503-701	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PORTLAND	OR
—	503-702	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PORTLAND	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.