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
2016-08-25	951-494	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	IDYLLWILD	CA
2016-08-25	985-323	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	AMITE CITY	LA
2016-08-24	513-597	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NEWTONSVL	OH
2016-08-24	614-974	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DUBLIN	OH
2016-08-24	618-801	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	GRANITE CY	IL
2016-08-24	618-804	0XXX1XXX2XXX4XXX6XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LAWRENCEVL	IL
2016-08-24	618-961	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC	224C	GLENCARBON	IL
2016-08-23	240-860	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	CUMBERLAND	MD
2016-08-23	267-691	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	PHLDLPHZN4	PA
2016-08-23	272-295	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	BLOOMSBURG	PA
2016-08-23	331-707	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	T-MOBILE USA, INC.	6529	AURORA	IL
2016-08-23	407-821	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	WINTERPARK	FL
2016-08-23	407-853	0–9 XXXall 10 · 6 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	WINTERPARK	FL
2016-08-23	407-866	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ORLANDO	FL
2016-08-23	423-812	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	GREENEVL	TN
2016-08-23	470-348	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	CARTERSVL	GA
2016-08-23	516-534	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN05	NY
2016-08-23	540-401	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	BERRYVILLE	VA
2016-08-23	573-920	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MO	993E	ELDON	MO
2016-08-23	608-460	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SAUK CITY	WI
2016-08-23	628-254	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SAUSALITO	CA
2016-08-23	667-808	0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	EASTON	MD
2016-08-23	669-268	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	CAMPBELL	CA
2016-08-23	682-812	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2016-08-23	719-308	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	COLORDOSPG	CO
2016-08-23	720-546	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2016-08-23	720-787	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	DENVER	CO
2016-08-23	720-919	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2016-08-23	754-812	0–9 XXXall 10 · 8 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CORAL SPG	FL
2016-08-23	941-303	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	VENICE	FL
2016-08-22	270-291	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - KY	8406	CADIZ	KY
2016-08-22	405-776	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OK	119F	EL RENO	OK
2016-08-22	442-208	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CALIPATRIA	CA
2016-08-22	628-217	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNFC CNTRL	CA
2016-08-22	628-244	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	BELVEDERE	CA
2016-08-22	646-967	0–9 XXXwhole prefix which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
2016-08-22	682-615	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SPRINGTOWN	TX
2016-08-22	769-213	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MS	719E	WESSON	MS
2016-08-22	774-615	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	FRAMINGHAM	MA
2016-08-22	803-848	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	SUMTER	SC
2016-08-22	816-514	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - MO	993E	KANSASCITY	MO
2016-08-22	816-603	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - MO	993E	KANSASCITY	MO
2016-08-22	816-712	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - MO	993E	KANSASCITY	MO
2016-08-22	848-256	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	METUCHEN	NJ
2016-08-22	909-505	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BIGBEAR CY	CA
2016-08-22	951-439	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	HEMT SAGE	CA
2016-08-22	980-293	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHARLOTTE	NC
2016-08-19	601-821	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks →	ONVOY, LLC - MS	719E	NVALAIRSTA	MS
2016-08-19	601-895	0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MS	719E	OBADIAH	MS
2016-08-19	808-379	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HONOLULU	HI

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.