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
2014-09-23	657-252	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	BUENA PARK	CA
2014-09-23	669-246	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SUNNYVALE	CA
2014-09-23	707-564	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	VACAVILLE	CA
2014-09-23	707-862	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	FRFLD-SUIS	CA
2014-09-23	727-200	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	CLEARWATER	FL
2014-09-23	816-469	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	KANSASCITY	MO
2014-09-23	831-346	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	SANTA CRUZ	CA
2014-09-23	832-899	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	STAFFORD	TX
2014-09-23	832-944	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	SUGAR LAND	TX
2014-09-23	832-960	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	SATSUMA	TX
2014-09-23	843-936	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	MTPLEASANT	SC
2014-09-23	845-762	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NEWBURGH	NY
2014-09-23	904-574	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2014-09-23	915-262	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2014-09-22	240-219	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	RIDGE	MD
2014-09-22	323-548	0–9 XXXwhole prefix which blocks →	METROPCS NETWORKS, LLC	899D	MONTEBELLO	CA
2014-09-22	407-747	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	KISSIMMEE	FL
2014-09-22	520-788	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CASAGRANDE	AZ
2014-09-22	669-241	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SUNNYVALE	CA
2014-09-22	707-690	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	NAPA	CA
2014-09-22	832-949	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	CHANNELVW	TX
2014-09-22	909-642	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	FONTANA	CA
2014-09-22	951-425	0–9 XXXall 10 · 3 holders which blocks →	METROPCS NETWORKS, LLC	899D	RIVERSIDE	CA
2014-09-22	956-478	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EDINBURG	TX
2014-09-19	207-572	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WINDHAM	ME
2014-09-19	216-971	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CLEVELAND	OH
2014-09-19	216-972	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CLEVELAND	OH
2014-09-19	306-801	not yet reported which blocks →	Iristel Inc.	154E	Lanigan	—
2014-09-19	306-802	not yet reported which blocks →	Iristel Inc.	154E	Moosomin	—
2014-09-19	402-506	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	OMAHA	NE
2014-09-19	424-367	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	EL SEGUNDO	CA
2014-09-19	469-810	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	ENNIS	TX
2014-09-19	470-272	0–9 XXXall 10 · 4 holders which blocks →	ETC COMMUNICATIONS, L.L.C. - GA	205D	GAINESVL	GA
2014-09-19	480-799	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-09-19	505-545	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ALBUQURQUE	NM
2014-09-19	506-808	not yet reported which blocks →	Iristel Inc.	154E	Sussex	—
2014-09-19	510-974	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	RICHMOND	CA
2014-09-19	516-265	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NASSAUZN05	NY
2014-09-19	587-463	not yet reported which blocks →	TELUS	8084	Edmonton	—
2014-09-19	602-551	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-09-19	623-216	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-09-19	639-355	not yet reported which blocks →	SaskTel Mobility	9868	Mossbank	—
2014-09-19	762-203	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	ETC COMMUNICATIONS, L.L.C. - GA	205D	CARNESVL	GA
2014-09-19	762-499	0–9 XXXall 10 · 3 holders which blocks →	ETC COMMUNICATIONS, L.L.C. - GA	205D	ATHENS	GA
2014-09-19	832-871	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	HOUSTON	TX
2014-09-19	929-312	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN12	NY
2014-09-19	929-323	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2014-09-19	929-325	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN05	NY
2014-09-19	929-326	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2014-09-19	929-327	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	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.