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
2019-10-04	661-884	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	WASCO	CA
2019-10-04	786-723	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	MIAMI	FL
2019-10-03	209-510	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MANTECA	CA
2019-10-03	209-660	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	JACKSON	CA
2019-10-03	236-804	not yet reported which blocks →	Iristel Inc.	154E	Chilliwack	—
2019-10-03	267-817	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	PHLDLPHZN1	PA
2019-10-03	419-314	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	FOSTORIA	OH
2019-10-03	431-533	not yet reported which blocks →	Iristel Inc.	154E	Austin	—
2019-10-03	434-443	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - VA	138E	CHARLOTSVL	VA
2019-10-03	506-305	not yet reported which blocks →	Iristel Inc.	154E	Edmundston	—
2019-10-03	520-436	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AZ	630E	HAYDEN	AZ
2019-10-03	520-438	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AZ	630E	WHITLOW	AZ
2019-10-03	602-691	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2019-10-03	825-797	not yet reported which blocks →	Iristel Inc.	154E	Hanna	—
2019-10-03	825-798	not yet reported which blocks →	Iristel Inc.	154E	Drumheller	—
2019-10-03	902-612	not yet reported which blocks →	Iristel Inc.	154E	Amherst	—
2019-10-03	909-776	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	UPLAND	CA
2019-10-03	937-761	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TROY	OH
2019-10-03	970-671	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - CO	026D	COLLBRAN	CO
2019-10-02	205-883	0–9 XXXall 10 · 2 holders which blocks →	AIRUS, INC. - AL	476H	W BLOCTON	AL
2019-10-02	209-399	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	MANTECA	CA
2019-10-02	318-695	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CSC VOICE, LLC	612K	CHOUDRANT	LA
2019-10-02	332-400	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN01	NY
2019-10-02	407-305	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - FL	937C	KISSIMMEE	FL
2019-10-02	442-312	0XXX1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	PINE CREEK	CA
2019-10-02	539-237	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	UNITED STATES CELLULAR - OK	6272	STIGLER	OK
2019-10-02	626-519	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ALHAMBRA	CA
2019-10-02	651-372	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MN	184D	NORTH BRCH	MN
2019-10-02	657-397	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA ANA	CA
2019-10-02	763-299	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MN	184D	PRINCETON	MN
2019-10-02	774-398	0–9 XXXall 10 · 2 holders which blocks →	AIRUS, INC. - MA	428H	BROCKTON	MA
2019-10-02	803-889	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	LK WYLIE W	SC
2019-10-02	803-891	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	SHARON	SC
2019-10-02	803-902	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	YORK	SC
2019-10-02	803-910	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - SC	548E	BOWMAN	SC
2019-10-02	803-916	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - SC	548E	BRANCHVL	SC
2019-10-02	820-280	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	HD CARRIER LLC	321J	LOS ALAMOS	CA
2019-10-02	825-799	not yet reported which blocks →	Iristel Inc.	154E	Grande Prairie	—
2019-10-02	850-979	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - FL	937C	MILTON	FL
2019-10-02	854-220	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	SUMMERVL	SC
2019-10-02	854-843	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	LAMAR	SC
2019-10-02	938-201	0–9 XXXall 10 · 3 holders which blocks →	AIRUS, INC. - AL	476H	CHILDERSBG	AL
2019-10-02	951-507	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MIRA LOMA	CA
2019-10-01	332-206	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NWYRCYZN01	NY
2019-10-01	360-995	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	OLYMPIA	WA
2019-10-01	423-219	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TN	114F	CHARLESTON	TN
2019-10-01	423-515	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - TN	525E	SO PITTSBG	TN
2019-10-01	423-919	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TN	525E	NEWTAZWELL	TN
2019-10-01	475-263	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF CONNECTICUT, LLC - CT	539F	WATERBURY	CT
2019-10-01	629-600	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	LEBANON	TN

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.