Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2014-10-15	561-475	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2014-10-15	615-648	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MURFREESBO	TN
2014-10-15	615-922	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2014-10-15	646-850	0–9 XXXwhole prefix which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NWYRCYZN01	NY
2014-10-15	646-882	0–9 XXXwhole prefix which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NWYRCYZN01	NY
2014-10-15	719-663	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	COLORDOSPG	CO
2014-10-15	720-772	0–9 XXXall 10 · 4 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	3467	DENVER	CO
2014-10-15	727-270	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	CLEARWATER	FL
2014-10-15	734-733	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CARLETON	MI
2014-10-15	781-469	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	LYNN	MA
2014-10-15	786-714	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2014-10-15	902-400	not yet reported which blocks →	Iristel Inc.	154E	Yarmouth	—
2014-10-15	902-500	not yet reported which blocks →	Iristel Inc.	154E	Sydney	—
2014-10-15	902-600	not yet reported which blocks →	Iristel Inc.	154E	New Glasgow	—
2014-10-15	971-601	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	SEASIDE	OR
2014-10-15	978-972	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	DANVERS	MA
2014-10-15	984-377	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	DURHAM	NC
2014-10-14	202-790	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN1	DC
2014-10-14	323-884	0–9 XXXwhole prefix which blocks →	METROPCS NETWORKS, LLC	899D	MONTEBELLO	CA
2014-10-14	343-473	not yet reported which blocks →	ISP Telecom Inc.	4727	Vankleek Hill	—
2014-10-14	343-474	not yet reported which blocks →	ISP Telecom Inc.	4727	Alexandria	—
2014-10-14	343-475	not yet reported which blocks →	ISP Telecom Inc.	4727	Cornwall	—
2014-10-14	385-495	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SALT LAKE	UT
2014-10-14	413-409	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	HOLYOKE	MA
2014-10-14	510-458	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRNK MAIN	CA
2014-10-14	516-273	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NASSAUZN02	NY
2014-10-14	530-813	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MARYSVILLE	CA
2014-10-14	571-489	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN17	VA
2014-10-14	571-645	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
2014-10-14	586-224	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2014-10-14	614-641	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 TELECOM OF OHIO, LLC - OH	7460	COLUMBUS	OH
2014-10-14	619-396	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	EL CAJON	CA
2014-10-14	626-267	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2014-10-14	631-644	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	RIVERHEAD	NY
2014-10-14	657-248	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FULLERTON	CA
2014-10-14	661-445	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LANCASTER	CA
2014-10-14	707-890	0–9 XXXall 10 · 8 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ROSA	CA
2014-10-14	716-291	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BUFFALO	NY
2014-10-14	716-385	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	TONAWANDA	NY
2014-10-14	775-430	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV	6458	CARSONCITY	NV
2014-10-14	775-501	0–9 XXXall 10 · 7 holders which blocks →	AT&T ENTERPRISES, LLC	516C	RENO	NV
2014-10-14	786-580	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	MIAMI	FL
2014-10-14	804-709	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	RICHMOND	VA
2014-10-14	816-933	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	CAMERON	MO
2014-10-14	845-768	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	KINGSTON	NY
2014-10-14	850-775	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	PNAMACYBCH	FL
2014-10-14	857-310	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BOSTON	MA
2014-10-14	857-320	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CAMBRIDGE	MA
2014-10-14	873-402	not yet reported which blocks →	TELUS Quebec	2243	Senneterre	—
2014-10-14	914-839	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	WSCHSTZN04	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.