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
2019-11-21	270-919	1XXX which blocks →	TELNYX LLC	073H	MADISONVL	KY
2019-11-21	417-518	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	BOLIVAR	MO
2019-11-21	423-703	0XXX2XXX3XXX4XXX9XXX which blocks →	ONVOY, LLC - TN	525E	COKERCREEK	TN
2019-11-21	515-644	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	DES MOINES	IA
2019-11-21	563-286	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	DAVENPORT	IA
2019-11-21	608-610	1XXX2XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LIME RIDGE	WI
2019-11-21	712-569	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	SIOUX CITY	IA
2019-11-21	815-892	0XXX1XXX2XXX6XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	STILMANVLY	IL
2019-11-21	931-391	0XXX1XXX3XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TN	525E	LINDEN	TN
2019-11-20	215-770	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - PA	547E	PHLDLPHZN4	PA
2019-11-20	307-284	0–9 XXXall 10 · 5 holders which blocks →	SILVER STAR TELEPHONE COMPANY, INC. - WY	110G	JACKSON	WY
2019-11-20	318-735	1XXX7XXX8XXX · 2 holders which blocks →	TELNYX LLC	073H	SHREVEPORT	LA
2019-11-20	337-483	0XXX1XXX8XXX · 3 holders which blocks →	TELNYX LLC	073H	LAFAYETTE	LA
2019-11-20	361-300	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	C CHRISTI	TX
2019-11-20	361-465	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	VICTORIA	TX
2019-11-20	404-737	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - GA	067D	ATLANTA	GA
2019-11-20	413-334	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	SPRINGFLD	MA
2019-11-20	515-416	0–9 XXXall 10 · 5 holders which blocks →	WIDE VOICE, LLC - IA	722G	DES MOINES	IA
2019-11-20	563-551	0–9 XXXall 10 · 6 holders which blocks →	WIDE VOICE, LLC - IA	722G	DAVENPORT	IA
2019-11-20	571-554	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	DALE CITY	VA
2019-11-20	681-278	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LOGAN	WV
2019-11-20	815-296	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	ROCKFORD	IL
2019-11-20	930-212	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	TELNYX LLC	073H	EVANSVILLE	IN
2019-11-20	930-213	0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks →	TELNYX LLC	073H	BLOOMINGTN	IN
2019-11-19	207-640	2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ME	7777	LISBON FLS	ME
2019-11-19	251-318	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	MOBILE	AL
2019-11-19	267-631	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	PHPHSBZN39	PA
2019-11-19	308-303	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NE	549E	CAIRO	NE
2019-11-19	334-679	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TELNYX LLC	073H	MONTGOMERY	AL
2019-11-19	407-214	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	ORLANDO	FL
2019-11-19	431-728	not yet reported which blocks →	TELUS Mobility	646F	Winnipeg	—
2019-11-19	559-602	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VISALIA	CA
2019-11-19	602-902	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2019-11-19	605-501	0–9 XXXall 10 · 4 holders which blocks →	WIDE VOICE, LLC - SD	071J	SIOUX FLS	SD
2019-11-19	672-992	not yet reported which blocks →	TELUS Mobility	8301	Red Rock	—
2019-11-19	712-613	0–9 XXXall 10 · 2 holders which blocks →	WIDE VOICE, LLC - IA	722G	SIOUX CITY	IA
2019-11-19	720-687	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2019-11-19	972-777	0–9 XXXall 10 · 2 holders which blocks →	USFON, INC. - TX	473F	DALLAS	TX
2019-11-18	209-562	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ANGELSCAMP	CA
2019-11-18	365-533	not yet reported which blocks →	Rogers Communications Canada Inc. (Cable)	743B	Uxbridge	—
2019-11-18	365-770	not yet reported which blocks →	Rogers Communications Canada Inc. (Cable)	743B	Port Perry	—
2019-11-18	579-451	not yet reported which blocks →	Cooptel	818D	St-Denis	—
2019-11-18	647-604	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-11-18	647-605	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-11-18	657-412	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2019-11-18	848-284	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PERTHAMBOY	NJ
2019-11-18	913-368	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GARDNER	KS
2019-11-15	213-750	not yet reported which blocks →	RIGHT CALL LLC	365J	LSAN DA 11	CA
2019-11-15	213-780	not yet reported which blocks →	RIGHT CALL LLC	365J	LSAN DA 12	CA
2019-11-15	213-790	not yet reported which blocks →	RIGHT CALL LLC	365J	LSAN DA 13	CA

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.