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
2020-05-11	226-554	not yet reported which blocks →	Fibernetics Corporation	464D	Hillsburgh	—
2020-05-11	226-612	not yet reported which blocks →	Fibernetics Corporation	464D	Caledon	—
2020-05-11	226-613	not yet reported which blocks →	Fibernetics Corporation	464D	Elora	—
2020-05-11	226-614	not yet reported which blocks →	Fibernetics Corporation	464D	Erin	—
2020-05-11	226-615	not yet reported which blocks →	Fibernetics Corporation	464D	Shelburne	—
2020-05-11	234-272	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	ROGERS	OH
2020-05-11	234-273	0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	LEETONIA	OH
2020-05-11	365-747	not yet reported which blocks →	TELUS Integrated Communications	2782	Brampton	—
2020-05-11	434-998	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - VA	138E	APPOMATTOX	VA
2020-05-11	506-973	not yet reported which blocks →	TELUS Integrated Communications	2782	Moncton	—
2020-05-11	520-479	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2020-05-11	540-202	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	THE PLAINS	VA
2020-05-11	571-520	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - VA	138E	HERNDON	VA
2020-05-11	571-771	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	WSNGTNZN08	VA
2020-05-11	657-437	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-05-11	657-488	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2020-05-11	659-569	0XXX1XXX5XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - AL	604E	LYNN	AL
2020-05-11	659-596	0XXX3XXX4XXX5XXX · 2 holders which blocks →	ONVOY, LLC - AL	604E	NEEDHAM	AL
2020-05-11	719-509	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CO	026D	TRINIDAD	CO
2020-05-11	720-734	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CO	026D	DENVER	CO
2020-05-11	725-234	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	INDIAN SPG	NV
2020-05-11	775-454	1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - NV	029F	BEATTY	NV
2020-05-11	775-456	1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - NV	029F	EMPIRE	NV
2020-05-11	804-534	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - VA	138E	HEATHSVL	VA
2020-05-11	845-801	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	MIDDLETOWN	NY
2020-05-11	928-360	0XXX1XXX · 2 holders which blocks →	COMMNET WIRELESS, LLC	5736	CHINLE	AZ
2020-05-08	240-995	1XXX2XXX3XXX5XXX6XXX7XXX · 3 holders which blocks →	ONVOY, LLC - MD	876D	FLINTSTONE	MD
2020-05-08	276-246	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	BIGSTONEGP	VA
2020-05-08	339-300	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	COHASSET	MA
2020-05-08	339-356	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	HULL	MA
2020-05-08	339-400	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	SAUGUS	MA
2020-05-08	339-529	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	WHITMAN	MA
2020-05-08	351-400	0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	ESSEX	MA
2020-05-08	351-500	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	LOWELL	MA
2020-05-08	351-529	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MERRIMAC	MA
2020-05-08	351-600	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	PEABODY	MA
2020-05-08	351-800	0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	WINCHENDON	MA
2020-05-08	351-900	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	IPSWICH	MA
2020-05-08	571-998	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - VA	138E	INDENDNTHL	VA
2020-05-08	602-693	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	PHOENIX	AZ
2020-05-08	707-831	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CLERLAOAKS	CA
2020-05-08	737-825	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	AUSTIN	TX
2020-05-08	757-780	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - VA	138E	CHUCKATUCK	VA
2020-05-08	757-799	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - VA	138E	NRFOLKZON3	VA
2020-05-08	857-465	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	BOSTON	MA
2020-05-07	272-242	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	JERMYN	PA
2020-05-07	307-770	0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ALL WEST/WYOMING, INC.	3880	FARSON	WY
2020-05-07	437-444	not yet reported which blocks →	IXICA Communications Inc.	812H	Toronto	—
2020-05-07	437-666	not yet reported which blocks →	IXICA Communications Inc.	812H	Toronto	—
2020-05-07	484-750	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	ALLENTOWN	PA

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.