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
2020-01-20	226-637	not yet reported which blocks →	Videotron Ltd.	787G	London	—
2020-01-20	226-698	not yet reported which blocks →	Videotron Ltd.	787G	Kitchener-Waterloo	—
2020-01-20	236-518	not yet reported which blocks →	Videotron Ltd.	787G	Vancouver	—
2020-01-20	365-476	not yet reported which blocks →	Videotron Ltd.	787G	Hamilton	—
2020-01-20	647-513	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2020-01-17	210-796	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	SANANTONIO	TX
2020-01-17	331-257	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AURORA	IL
2020-01-17	343-254	not yet reported which blocks →	Videotron Ltd.	787G	Ottawa-Hull	—
2020-01-17	458-247	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	EUGENE	OR
2020-01-17	505-230	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	SANTA FE	NM
2020-01-17	581-890	not yet reported which blocks →	Iristel Inc.	154E	Quebec	—
2020-01-17	581-891	not yet reported which blocks →	Iristel Inc.	154E	Quebec	—
2020-01-17	602-962	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2020-01-17	605-774	0–9 XXXall 10 · 4 holders which blocks →	EDGETEL, LLC	179J	SIOUX FLS	SD
2020-01-17	612-446	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MN	5256	TWINCITIES	MN
2020-01-17	707-231	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SONOMA	CA
2020-01-17	779-267	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JOLIET	IL
2020-01-17	825-712	not yet reported which blocks →	Videotron Ltd.	787G	Calgary	—
2020-01-17	825-818	not yet reported which blocks →	Fibernetics Corporation	464D	Banff	—
2020-01-17	878-224	0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FORD CITY	PA
2020-01-17	907-206	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AK	9413	ANCHORAGE	AK
2020-01-17	912-410	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	PEMBROKE	GA
2020-01-17	947-216	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MI
2020-01-17	951-517	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TEMECULA	CA
2020-01-16	202-935	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - DC	074F	WSHNGTNZN1	DC
2020-01-16	234-267	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HIRAM	OH
2020-01-16	249-516	not yet reported which blocks →	Videotron Ltd.	383F	Peterborough	—
2020-01-16	319-880	0–9 XXXwhole prefix which blocks →	EDGETEL, LLC	179J	MORNINGSUN	IA
2020-01-16	437-837	not yet reported which blocks →	Fibernetics Corporation	464D	Toronto	—
2020-01-16	515-807	0–9 XXXwhole prefix which blocks →	EDGETEL, LLC	179J	GOLDFIELD	IA
2020-01-16	540-783	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	STAFFORD	VA
2020-01-16	657-417	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-01-16	672-887	not yet reported which blocks →	Fibernetics Corporation	464D	Vancouver	—
2020-01-16	712-771	0–9 XXXwhole prefix which blocks →	EDGETEL, LLC	179J	CARROLL	IA
2020-01-15	346-418	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BAMMEL	TX
2020-01-15	352-654	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	INVERNESS	FL
2020-01-15	385-386	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	SALT LAKE	UT
2020-01-15	470-543	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-01-15	470-547	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-01-15	669-279	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CAMPBELL	CA
2020-01-15	734-583	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BELLEVILLE	MI
2020-01-15	734-803	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	ANN ARBOR	MI
2020-01-15	818-873	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LACRSCENTA	CA
2020-01-15	850-749	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	DESTIN	FL
2020-01-15	850-935	0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GULFBREEZE	FL
2020-01-15	954-690	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	FTLAUDERDL	FL
2020-01-14	225-437	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	WH CASTLE	LA
2020-01-14	253-317	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TACOMA	WA
2020-01-14	458-246	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ASHLAND	OR
2020-01-14	463-226	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	CLAYTON	IN

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.