Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

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
2020-08-05	839-500	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	ROCK HILL	SC
2020-08-05	862-842	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	MORRISTOWN	NJ
2020-08-05	864-658	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	SPARTANBG	SC
2020-08-05	909-826	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	POMONA	CA
2020-08-05	920-932	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	GREEN BAY	WI
2020-08-05	951-542	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	RIVERSIDE	CA
2020-08-04	234-279	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	AKRON	OH
2020-08-04	332-235	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	NWYRCYZN01	NY
2020-08-04	352-705	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	LEESBURG	FL
2020-08-04	365-312	not yet reported which blocks →	Fibernetics Corporation	464D	Beamsville	—
2020-08-04	365-313	not yet reported which blocks →	Fibernetics Corporation	464D	Port Colborne	—
2020-08-04	365-314	not yet reported which blocks →	Fibernetics Corporation	464D	Vineland	—
2020-08-04	365-680	not yet reported which blocks →	Fibernetics Corporation	464D	Bethesda	—
2020-08-04	423-659	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TN	114F	COPPERBSIN	TN
2020-08-04	463-237	0–9 XXXall 10 · 5 holders which blocks →	NUSO, LLC	478J	INDIANAPLS	IN
2020-08-04	561-592	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	BOCA RATON	FL
2020-08-04	567-317	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	HD CARRIER LLC	321J	TOLEDO	OH
2020-08-04	607-966	2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	HAMMONDSPT	NY
2020-08-04	618-621	0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks →	VONAGE AMERICA LLC	197D	CAIRO	IL
2020-08-04	618-630	0–9 XXXall 10 · 4 holders which blocks →	STRATUS NETWORKS	495J	CARBONDALE	IL
2020-08-04	618-631	0–9 XXXall 10 · 3 holders which blocks →	STRATUS NETWORKS	495J	COLLINSVL	IL
2020-08-04	618-788	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	ANNA	IL
2020-08-04	620-733	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	PROTECTION	KS
2020-08-04	620-944	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	FOWLER	KS
2020-08-04	661-504	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PLDL PLDL	CA
2020-08-04	680-346	0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	MACEDON	NY
2020-08-04	845-560	0–9 XXXall 10 · 6 holders which blocks →	HD CARRIER LLC	321J	ELLENVILLE	NY
2020-08-04	856-758	2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CEDARVILLE	NJ
2020-08-04	929-554	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN06	NY
2020-08-04	929-992	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN07	NY
2020-08-04	937-518	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	DAYTON	OH
2020-08-03	210-868	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SANANTONIO	TX
2020-08-03	430-277	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	DENISON	TX
2020-08-03	469-870	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2020-08-03	470-618	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2020-08-03	470-620	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-08-03	507-470	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WINONA	MN
2020-08-03	602-727	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2020-08-03	605-318	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD	6569	PIERRE	SD
2020-08-03	608-292	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	478J	MADISON	WI
2020-08-03	928-392	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	LKHAVASUCY	AZ
2020-07-31	424-786	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	MALIBU	CA
2020-07-31	548-561	not yet reported which blocks →	Fibernetics Corporation	464D	Amherstburg	—
2020-07-31	548-562	not yet reported which blocks →	Fibernetics Corporation	464D	Essex	—
2020-07-31	548-563	not yet reported which blocks →	Fibernetics Corporation	464D	Kingsville	—
2020-07-31	548-564	not yet reported which blocks →	Fibernetics Corporation	464D	Leamington	—
2020-07-31	548-565	not yet reported which blocks →	Fibernetics Corporation	464D	Tecumseh	—
2020-07-31	601-816	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MERIDIAN	MS
2020-07-31	669-302	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CAMPBELL	CA
2020-07-30	254-397	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KILLEEN	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.