Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
2020-12-09	438-560	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-12-09	442-344	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VICTORVL	CA
2020-12-09	479-449	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	RUSSELLVL	AR
2020-12-09	559-604	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VISALIA	CA
2020-12-09	562-527	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LONG BEACH	CA
2020-12-09	619-769	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CHULAVISTA	CA
2020-12-09	623-269	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	PHOENIX	AZ
2020-12-09	641-281	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	CHARLES CY	IA
2020-12-09	659-214	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	HARGRAY OF ALABAMA, INC. - AL	432J	PELL CITY	AL
2020-12-09	667-297	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	EDGEWOOD	MD
2020-12-09	680-234	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	AUBURN	NY
2020-12-09	707-767	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA ROSA	CA
2020-12-09	712-398	1XXX8XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	ONAWA	IA
2020-12-09	774-477	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	WHITINSVL	MA
2020-12-09	803-961	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	AIKEN	SC
2020-12-09	909-928	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	POMONA	CA
2020-12-09	951-560	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	RIVERSIDE	CA
2020-12-08	213-731	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	MONTEBELLO	CA
2020-12-08	234-699	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	WARREN	OH
2020-12-08	234-799	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	WOOSTER	OH
2020-12-08	249-733	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Barrie	—
2020-12-08	254-910	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	WACO	TX
2020-12-08	313-480	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	DETROITZN5	MI
2020-12-08	314-784	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MO	093F	MEHLVILLE	MO
2020-12-08	321-399	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	COCOABEACH	FL
2020-12-08	325-310	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	ABILENE	TX
2020-12-08	325-610	0XXX2XXX3XXX4XXX6XXX which blocks →	ONVOY, LLC - TX	903C	SAN ANGELO	TX
2020-12-08	361-910	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	C CHRISTI	TX
2020-12-08	409-410	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	BEAUMONT	TX
2020-12-08	430-810	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	LONGVIEW	TX
2020-12-08	432-410	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	MIDLAND	TX
2020-12-08	437-279	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-12-08	437-632	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-12-08	438-412	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-12-08	438-489	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-12-08	480-741	0–9 XXXall 10 · 6 holders which blocks →	NUSO, LLC	478J	PHOENIX	AZ
2020-12-08	520-535	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2020-12-08	562-561	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	WHITTIER	CA
2020-12-08	689-227	0–9 XXXall 10 · 6 holders which blocks →	METROPCS NETWORKS, LLC	899D	WINTERPARK	FL
2020-12-08	713-930	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	HOUSTON	TX
2020-12-08	726-610	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	SANANTONIO	TX
2020-12-08	737-910	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	AUSTIN	TX
2020-12-08	806-810	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	LUBBOCK	TX
2020-12-08	806-910	0XXX1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	AMARILLO	TX
2020-12-08	857-754	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	QUINCY	MA
2020-12-08	915-910	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2020-12-08	928-398	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AZ	630E	SOMERTON	AZ
2020-12-08	928-889	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AZ	630E	LKHAVASUCY	AZ
2020-12-08	928-981	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - AZ	630E	FLAGSTAFF	AZ
2020-12-08	940-410	0XXX4XXX which blocks →	ONVOY, LLC - TX	903C	WICHITAFLS	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.