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
2020-06-17	936-345	0XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	DEVERS	TX
2020-06-16	202-951	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2020-06-16	234-356	3XXX4XXX7XXX9XXX · 2 holders which blocks →	FRACTEL, LLC	965H	BRISTOLVL	OH
2020-06-16	240-729	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ASHTON236	MD
2020-06-16	308-309	0XXX which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LITCHFIELD	NE
2020-06-16	308-312	0XXX which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	GIBBON	NE
2020-06-16	308-323	0XXX which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	RAVENNA	NE
2020-06-16	319-323	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OELWEIN	IA
2020-06-16	339-331	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - MA	892D	DUXBURY	MA
2020-06-16	367-778	not yet reported which blocks →	TELUS Quebec	2243	Quebec	—
2020-06-16	386-282	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	NWSMYRNBCH	FL
2020-06-16	413-701	0XXX1XXX2XXX3XXX5XXX7XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	BECKET	MA
2020-06-16	463-233	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	DANVILLE	IN
2020-06-16	561-861	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	PAHOKEE	FL
2020-06-16	575-240	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	TAOS	NM
2020-06-16	579-849	not yet reported which blocks →	TELUS Quebec	2243	St-Hyacinthe	—
2020-06-16	607-601	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	ONEONTA	NY
2020-06-16	743-210	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	WALKERTOWN	NC
2020-06-16	747-307	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	GLENDALE	CA
2020-06-16	774-771	1XXX2XXX3XXX5XXX6XXX8XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	BREWSTER	MA
2020-06-16	774-871	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - MA	892D	OSTERVILLE	MA
2020-06-16	781-745	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	NORWELL	MA
2020-06-16	825-667	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2020-06-16	839-201	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	COLUMBIA	SC
2020-06-16	845-881	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	PATTERSON	NY
2020-06-16	850-931	0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	SANROSABCH	FL
2020-06-16	854-205	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	CHARLESTON	SC
2020-06-16	856-501	0XXX1XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	CAMDEN	NJ
2020-06-16	862-501	0–9 XXXall 10 · 2 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	NEWARK	NJ
2020-06-16	864-584	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	GREENVILLE	SC
2020-06-16	873-635	not yet reported which blocks →	TELUS Quebec	2243	Ottawa-Hull	—
2020-06-16	873-638	not yet reported which blocks →	TELUS Quebec	2243	Drummondville	—
2020-06-16	873-639	not yet reported which blocks →	TELUS Quebec	2243	Sherbrooke	—
2020-06-16	878-231	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	WEXFORD	PA
2020-06-16	914-901	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	BIRCHWOOD	NY
2020-06-16	928-364	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	ONVOY, LLC - AZ	630E	BLUE RIDGE	AZ
2020-06-16	928-365	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AZ	630E	GREENEHVN	AZ
2020-06-16	928-370	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AZ	630E	MARBLECNYN	AZ
2020-06-16	928-371	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks →	ONVOY, LLC - AZ	630E	MORMONLAKE	AZ
2020-06-16	928-378	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - AZ	630E	ROOSEVLTLK	AZ
2020-06-16	928-382	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AZ	630E	SALOME	AZ
2020-06-16	928-384	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AZ	630E	SUPAI	AZ
2020-06-16	930-968	0XXX1XXX2XXX · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	PEKIN	IN
2020-06-15	206-614	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - WA	483E	SEATTLE	WA
2020-06-15	209-503	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LODI	CA
2020-06-15	216-699	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	TERRACE	OH
2020-06-15	326-300	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	FRACTEL, LLC	965H	PEEBLES	OH
2020-06-15	326-400	0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks →	FRACTEL, LLC	965H	HAMERSVL	OH
2020-06-15	326-800	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BELLBROOK	OH
2020-06-15	326-900	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	YLSPGCLFTN	OH

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.