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
2019-11-05	431-605	not yet reported which blocks →	MTS Inc.	8088	Morris	—
2019-11-05	431-606	not yet reported which blocks →	MTS Inc.	8088	Selkirk	—
2019-11-05	431-607	not yet reported which blocks →	MTS Inc.	8088	Steinbach	—
2019-11-05	431-608	not yet reported which blocks →	MTS Inc.	8088	Swan River	—
2019-11-05	431-609	not yet reported which blocks →	MTS Inc.	8088	Thompson	—
2019-11-05	469-869	not yet reported which blocks →	RIGHT CALL LLC	365J	IRVING	TX
2019-11-05	469-889	not yet reported which blocks →	RIGHT CALL LLC	365J	PLANO	TX
2019-11-05	469-944	not yet reported which blocks →	RIGHT CALL LLC	365J	DALLAS	TX
2019-11-05	469-979	not yet reported which blocks →	RIGHT CALL LLC	365J	ROCKWALL	TX
2019-11-05	504-384	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	NEWORLEANS	LA
2019-11-05	509-407	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA	7274	QUINCY	WA
2019-11-05	515-501	1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	MAXWELL	IA
2019-11-05	561-661	not yet reported which blocks →	RIGHT CALL LLC	365J	BOCA RATON	FL
2019-11-05	561-761	not yet reported which blocks →	RIGHT CALL LLC	365J	WPALMBEACH	FL
2019-11-05	626-556	0–9 XXXall 10 · 7 holders which blocks →	BLUIP, INC.	819H	ALHAMBRA	CA
2019-11-05	641-276	1XXX2XXX6XXX7XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	AGENCY	IA
2019-11-05	641-400	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	HUMESTON	IA
2019-11-05	641-448	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	MELCHER	IA
2019-11-05	647-540	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2019-11-05	682-440	not yet reported which blocks →	RIGHT CALL LLC	365J	FORT WORTH	TX
2019-11-05	682-782	not yet reported which blocks →	RIGHT CALL LLC	365J	ARLINGTON	TX
2019-11-05	712-576	0XXX2XXX3XXX7XXX · 2 holders which blocks →	ONVOY, LLC - IA	221F	TABOR	IA
2019-11-05	743-229	0–9 XXXall 10 · 4 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	GREENSBORO	NC
2019-11-05	786-844	not yet reported which blocks →	RIGHT CALL LLC	365J	HOMESTEAD	FL
2019-11-05	786-880	not yet reported which blocks →	RIGHT CALL LLC	365J	MIAMI	FL
2019-11-05	786-986	not yet reported which blocks →	RIGHT CALL LLC	365J	NORTH DADE	FL
2019-11-05	802-600	not yet reported which blocks →	RIGHT CALL LLC	365J	BURLINGTON	VT
2019-11-05	802-803	not yet reported which blocks →	RIGHT CALL LLC	365J	BARRE	VT
2019-11-05	802-804	not yet reported which blocks →	RIGHT CALL LLC	365J	RUTLAND	VT
2019-11-05	802-805	not yet reported which blocks →	RIGHT CALL LLC	365J	MONTPELIER	VT
2019-11-05	828-602	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NC	8389	ASHEVILLE	NC
2019-11-05	838-212	not yet reported which blocks →	RIGHT CALL LLC	365J	ALBANY	NY
2019-11-05	838-214	not yet reported which blocks →	RIGHT CALL LLC	365J	AMSTERDAM	NY
2019-11-05	838-215	not yet reported which blocks →	RIGHT CALL LLC	365J	CATSKILL	NY
2019-11-05	838-220	not yet reported which blocks →	RIGHT CALL LLC	365J	COLONIE	NY
2019-11-05	838-225	not yet reported which blocks →	RIGHT CALL LLC	365J	HUDSON	NY
2019-11-05	838-230	not yet reported which blocks →	RIGHT CALL LLC	365J	MIDDLEBG	NY
2019-11-05	838-238	not yet reported which blocks →	RIGHT CALL LLC	365J	ROTERDMJCT	NY
2019-11-05	838-338	not yet reported which blocks →	RIGHT CALL LLC	365J	SCHENCTADY	NY
2019-11-05	838-538	not yet reported which blocks →	RIGHT CALL LLC	365J	TROY	NY
2019-11-05	980-301	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	CHARLOTTE	NC
2019-11-05	984-272	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	RALEIGH	NC
2019-11-04	206-580	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	SEATTLE	WA
2019-11-04	210-794	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	SANANTONIO	TX
2019-11-04	254-878	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	WACO	TX
2019-11-04	309-844	0XXX1XXX4XXX8XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	PEORIA	IL
2019-11-04	469-749	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	DALLAS	TX
2019-11-04	516-866	0–9 XXXall 10 · 7 holders which blocks →	AIRUS, INC. - NY	363H	NASSAUZN03	NY
2019-11-04	669-299	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	SNJS WEST	CA
2019-11-04	689-216	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	ORLANDO	FL

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.