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
2016-02-19	651-273	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MN	184D	HASTINGS	MN
2016-02-19	671-682	not yet reported which blocks →	GUAM WIRELESS TELEPHONE COMPANY, LLC	3945	AGANA	GU
2016-02-19	807-701	not yet reported which blocks →	Iristel Inc.	154E	Thunder Bay	—
2016-02-19	864-772	0–9 XXXall 10 · 8 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	ANDERSON	SC
2016-02-19	873-737	not yet reported which blocks →	Iristel Inc.	154E	Shawinigan	—
2016-02-19	901-472	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TN	525E	COLLIERVL	TN
2016-02-18	208-504	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - ID	689F	CALDWELL	ID
2016-02-18	226-273	not yet reported which blocks →	Iristel Inc.	154E	London	—
2016-02-18	226-775	not yet reported which blocks →	Iristel Inc.	154E	Stratford	—
2016-02-18	240-771	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MD	876D	POOLESVL	MD
2016-02-18	249-525	not yet reported which blocks →	Bell Mobility	6574	Sault Ste. Marie	—
2016-02-18	249-535	not yet reported which blocks →	Bell Mobility	6574	Barrie	—
2016-02-18	249-805	not yet reported which blocks →	Iristel Inc.	154E	Sudbury	—
2016-02-18	365-653	not yet reported which blocks →	Iristel Inc.	154E	St. Catharines-Thorold	—
2016-02-18	385-489	0–9 XXXall 10 · 8 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BOUNTIFUL	UT
2016-02-18	417-920	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SPRINGFLD	MO
2016-02-18	470-280	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - GA	067D	BOWDON	GA
2016-02-18	475-207	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WOODBURY	CT
2016-02-18	531-222	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NE	549E	OMAHA	NE
2016-02-18	563-232	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IA	8344	DAVENPORT	IA
2016-02-18	581-802	not yet reported which blocks →	Iristel Inc.	154E	Thetford Mines	—
2016-02-18	587-545	not yet reported which blocks →	Bell Mobility	6574	Edmonton	—
2016-02-18	587-814	not yet reported which blocks →	Iristel Inc.	154E	Medicine Hat	—
2016-02-18	587-839	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2016-02-18	628-228	0–9 XXXall 10 · 6 holders which blocks →	PACIFIC BELL	9740	SNFC CNTRL	CA
2016-02-18	636-317	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	HARVESTER	MO
2016-02-18	667-229	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2016-02-18	814-924	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	ALTOONA	PA
2016-02-18	912-875	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	JEKYLL IS	GA
2016-02-17	205-875	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AL	604E	W BLOCTON	AL
2016-02-17	218-505	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MN	184D	COMSTOCK	MN
2016-02-17	224-259	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	ANTIOCH	IL
2016-02-17	224-775	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DESPLAINES	IL
2016-02-17	225-725	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - LA	749E	DONALDSNVL	LA
2016-02-17	251-257	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AL	604E	BELLEFONTN	AL
2016-02-17	256-787	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AL	604E	HANCEVILLE	AL
2016-02-17	331-871	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	W CHICAGO	IL
2016-02-17	412-514	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2016-02-17	502-702	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - KY	896E	LA GRANGE	KY
2016-02-17	667-202	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MD	876D	ELKTON	MD
2016-02-16	225-461	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	GONZALES	LA
2016-02-16	226-770	not yet reported which blocks →	Iristel Inc.	154E	Guelph	—
2016-02-16	226-797	not yet reported which blocks →	Iristel Inc.	154E	Chatham	—
2016-02-16	226-841	not yet reported which blocks →	Iristel Inc.	154E	Wingham	—
2016-02-16	226-890	not yet reported which blocks →	Iristel Inc.	154E	Hespeler	—
2016-02-16	249-315	not yet reported which blocks →	Iristel Inc.	154E	Barrie	—
2016-02-16	272-466	0–9 XXXall 10 · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	WOOLRICH	PA
2016-02-16	317-741	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	INDIANAPLS	IN
2016-02-16	343-301	not yet reported which blocks →	Iristel Inc.	154E	Cornwall	—
2016-02-16	343-302	not yet reported which blocks →	Iristel Inc.	154E	Kingston	—

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.