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
2019-09-25	226-705	not yet reported which blocks →	Iristel Inc.	154E	Woodstock	—
2019-09-25	239-710	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FORT MYERS	FL
2019-09-25	240-693	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	WALKERSVL	MD
2019-09-25	352-820	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	OCALA	FL
2019-09-25	437-701	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2019-09-25	437-702	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2019-09-25	437-703	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2019-09-25	712-927	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SIOUX CITY	IA
2019-09-25	740-234	0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	HOPEDALE	OH
2019-09-25	747-289	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2019-09-25	825-508	not yet reported which blocks →	Iristel Inc.	154E	Boyle	—
2019-09-25	825-806	not yet reported which blocks →	Iristel Inc.	154E	Calgary	—
2019-09-25	848-281	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	AIRUS, INC. - NJ	066G	CARTERET	NJ
2019-09-25	909-769	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CALIMESA	CA
2019-09-25	916-602	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ELK GROVE	CA
2019-09-25	916-618	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	FOLSOM	CA
2019-09-25	984-251	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	WAKEFOREST	NC
2019-09-24	217-900	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SPRINGFLD	IL
2019-09-24	236-337	not yet reported which blocks →	TELUS	8086	Courtenay	—
2019-09-24	431-814	not yet reported which blocks →	Iristel Inc.	154E	Oakbank	—
2019-09-24	470-586	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2019-09-24	659-200	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AL	604E	LINCOLN	AL
2019-09-24	667-776	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	BALTIMORE	MD
2019-09-24	701-961	0XXX1XXX6XXX · 3 holders which blocks →	VONAGE AMERICA LLC	197D	BISMARCK	ND
2019-09-24	716-295	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WILLIAMSVL	NY
2019-09-24	762-237	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - GA	8392	WARRENTON	GA
2019-09-24	808-460	0–9 XXXall 10 · 6 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	HONOLULU	HI
2019-09-24	873-462	not yet reported which blocks →	Videotron Ltd.	8306	Bishopton	—
2019-09-24	873-463	not yet reported which blocks →	Videotron Ltd.	8306	Bury	—
2019-09-23	249-479	not yet reported which blocks →	ISP Telecom Inc.	4727	Sault Ste. Marie	—
2019-09-23	314-648	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CREVECOEUR	MO
2019-09-23	385-291	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	KAYSVILLE	UT
2019-09-23	385-305	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	KAYSVILLE	UT
2019-09-23	385-343	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	SALT LAKE	UT
2019-09-23	401-208	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	PROVIDENCE	RI
2019-09-23	438-281	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2019-09-23	571-497	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	OCCOQUAN	VA
2019-09-23	616-500	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GRAND RPDS	MI
2019-09-23	647-353	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-09-23	647-672	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-09-23	672-580	not yet reported which blocks →	TELUS Mobility	8301	Kelowna	—
2019-09-23	672-999	not yet reported which blocks →	TELUS Mobility	8301	Vancouver	—
2019-09-20	205-882	0–9 XXXall 10 · 3 holders which blocks →	HARGRAY OF ALABAMA, INC. - AL	432J	BIRMINGHAM	AL
2019-09-20	226-309	not yet reported which blocks →	ISP Telecom Inc.	4727	Orangeville	—
2019-09-20	226-537	not yet reported which blocks →	ISP Telecom Inc.	4727	Owen Sound	—
2019-09-20	240-866	0–9 XXXall 10 · 6 holders which blocks →	TERRA NOVA TELECOM INC.	145J	HAGERSTOWN	MD
2019-09-20	249-478	not yet reported which blocks →	ISP Telecom Inc.	4727	Huntsville	—
2019-09-20	325-758	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	BRONTE	TX
2019-09-20	325-842	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	SWEETWATER	TX
2019-09-20	346-977	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	BAYTOWN	TX

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.