Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2013-04-18	872-214	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN06	IL
2013-04-18	872-301	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN10	IL
2013-04-17	320-402	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	NUSO, LLC	551G	ST CLOUD	MN
2013-04-17	832-931	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2013-04-17	878-201	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	ROCHESTER	PA
2013-04-17	878-302	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	NEWKNSNGTN	PA
2013-04-16	249-700	not yet reported which blocks →	Iristel Inc.	154E	Huntsville	—
2013-04-16	312-585	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CHICGOZN01	IL
2013-04-16	343-700	not yet reported which blocks →	Iristel Inc.	154E	Ottawa-Hull	—
2013-04-16	403-300	not yet reported which blocks →	Shaw Telecom Inc.	497E	Calgary	—
2013-04-16	567-289	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LIMA	OH
2013-04-16	567-312	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	TOLEDO	OH
2013-04-16	567-560	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MANSFIELD	OH
2013-04-16	579-224	not yet reported which blocks →	TELUS Quebec	2243	St-Jean	—
2013-04-16	581-814	not yet reported which blocks →	TELUS Quebec	2243	Quebec	—
2013-04-16	639-739	not yet reported which blocks →	Iristel Inc.	154E	Regina	—
2013-04-16	646-668	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2013-04-16	719-551	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	COLORDOSPG	CO
2013-04-16	740-487	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ZANESVILLE	OH
2013-04-16	786-612	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2013-04-16	873-406	not yet reported which blocks →	TELUS Quebec	2243	Victoriaville	—
2013-04-16	873-800	not yet reported which blocks →	Iristel Inc.	154E	Gatineau	—
2013-04-16	917-924	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN04	NY
2013-04-16	956-410	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	LOSFRESNOS	TX
2013-04-16	984-664	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC	7835	RALEIGH	NC
2013-04-15	256-203	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	HUNTSVILLE	AL
2013-04-15	425-209	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	BELLEVUE	WA
2013-04-15	484-909	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	PARKESBURG	PA
2013-04-15	715-753	1XXX2XXX3XXX6XXX · 3 holders which blocks →	MIDWAY TEL. CO.	0909	MEDFORD	WI
2013-04-15	716-273	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	SALAMANCA	NY
2013-04-15	719-493	0–9 XXXall 10 · 5 holders which blocks →	TELIAX, INC. - CO	567G	COLORDOSPG	CO
2013-04-15	774-409	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	TAUNTON	MA
2013-04-15	845-274	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NEW CITY	NY
2013-04-15	909-312	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	REDLANDS	CA
2013-04-15	952-205	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9631	TWINCITIES	MN
2013-04-12	204-321	not yet reported which blocks →	MTS Inc.	8088	Steinbach	—
2013-04-12	204-579	not yet reported which blocks →	MTS Inc.	8088	Brandon	—
2013-04-12	646-676	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	NWYRCYZN01	NY
2013-04-12	778-460	not yet reported which blocks →	Shaw Telecom Inc.	497E	Castlegar	—
2013-04-12	819-702	not yet reported which blocks →	Bell Mobility	6574	Ville-Marie	—
2013-04-11	262-214	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF WISCONSIN, LLC - WI	227F	WHITEWATER	WI
2013-04-11	262-419	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF WISCONSIN, LLC - WI	227F	JACKSON	WI
2013-04-11	302-501	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7309	NEW CASTLE	DE
2013-04-11	573-273	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF MISSOURI, LLC - MO	225F	ADVANCE	MO
2013-04-11	573-975	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF MISSOURI, LLC - MO	225F	MEXICO	MO
2013-04-11	724-670	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	NEWBEDFORD	PA
2013-04-11	763-308	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF MINNESOTA, LLC - MN	107F	PRINCETON	MN
2013-04-11	770-203	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	CUMMING	GA
2013-04-11	772-800	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - FL	937C	PTST LUCIE	FL
2013-04-11	779-333	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	FRANKFORT	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.