Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2022-09-01	807-206	not yet reported which blocks →	Distributel	082E	Vermilion Bay	—
2022-09-01	865-445	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks →	ONVOY, LLC - TN	525E	JEFFERSNCY	TN
2022-09-01	910-972	none assigned yet which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CYPRESSCRK	NC
2022-09-01	915-318	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	FABENS	TX
2022-09-01	943-469	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - GA	067D	SENOIA	GA
2022-08-31	234-355	0XXX3XXX5XXX9XXX · 4 holders which blocks →	AT&T - LOCAL	7421	MARLBORO	OH
2022-08-31	251-571	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AL	604E	BAYMINETTE	AL
2022-08-31	480-918	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	PHOENIX	AZ
2022-08-31	602-874	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	PHOENIX	AZ
2022-08-31	623-324	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PHOENIX	AZ
2022-08-31	689-282	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	ORLANDO	FL
2022-08-31	689-283	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	REEDYCREEK	FL
2022-08-31	726-256	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	SANANTONIO	TX
2022-08-31	727-617	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	HUDSON	FL
2022-08-31	727-717	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	NWPTRICHEY	FL
2022-08-31	757-863	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	SUFFOLK	VA
2022-08-31	804-623	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA	7238	REEDVILLE	VA
2022-08-31	901-716	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TN	525E	SOMERVILLE	TN
2022-08-31	917-419	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN01	NY
2022-08-31	989-363	1XXX2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks →	NUSO, LLC	732J	MERRILL	MI
2022-08-30	253-434	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WA	483E	PUYALLUP	WA
2022-08-30	301-301	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MD	876D	GAITHERSBG	MD
2022-08-30	445-257	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN39	PA
2022-08-30	628-285	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	SAN RAFAEL	CA
2022-08-30	669-332	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	SARATOGA	CA
2022-08-30	672-718	not yet reported which blocks →	Iristel Inc.	154E	Keremeos	—
2022-08-30	771-215	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN1	DC
2022-08-29	262-341	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ALLENTON	WI
2022-08-29	262-371	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	KENOSHA	WI
2022-08-29	269-392	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BENTON HBR	MI
2022-08-29	313-500	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	DETROITZN5	MI
2022-08-29	414-381	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	MILWAUKZN4	WI
2022-08-29	626-659	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	PSDN PSDN	CA
2022-08-29	825-746	not yet reported which blocks →	Iristel Inc.	154E	Medicine Hat	—
2022-08-29	862-972	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	NEWFOUNDLD	NJ
2022-08-26	331-290	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	AURORA	IL
2022-08-26	331-291	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DOWNERSGRV	IL
2022-08-26	361-305	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	VICTORIA	TX
2022-08-26	437-427	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2022-08-26	458-289	0XXX1XXX8XXX9XXX · 3 holders which blocks →	FARMERS MUTUAL TELEPHONE COMPANY - OR	782H	ONTARIO	OR
2022-08-26	606-249	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	OLIVE HILL	KY
2022-08-26	681-382	0XXX1XXX2XXX · 2 holders which blocks →	NUSO, LLC	732J	CHESTER	WV
2022-08-26	689-262	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	ORLANDO	FL
2022-08-26	740-556	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BALTIMORE	OH
2022-08-26	903-869	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GREENVILLE	TX
2022-08-26	915-335	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	EL PASO	TX
2022-08-26	945-269	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2022-08-26	971-435	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	BEAVERTON	OR
2022-08-25	213-818	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	LSAN DA 06	CA
2022-08-25	240-948	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MD	071F	LEONARDTN	MD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.