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
2020-05-07	520-523	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AZ	630E	SIERRAVIST	AZ
2020-05-07	520-525	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AZ	630E	BISBEE	AZ
2020-05-07	602-671	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	PHOENIX	AZ
2020-05-07	725-373	0–9 XXXall 10 · 9 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	LAS VEGAS	NV
2020-05-07	757-997	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - VA	138E	WINDSOR	VA
2020-05-07	848-288	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NJ	637C	BELMAR	NJ
2020-05-07	854-345	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	BLUFFTON	SC
2020-05-07	854-465	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	FRACTEL, LLC	965H	TIMMONSVL	SC
2020-05-07	854-946	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	LOWCOUNTRY	SC
2020-05-07	864-786	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	WILLIAMSTN	SC
2020-05-07	864-842	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	WESTMINSTR	SC
2020-05-06	213-524	0–9 XXXall 10 · 4 holders which blocks →	AIRESPRING, INC.	996H	LSAN DA 01	CA
2020-05-06	219-529	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	HAMMOND	IN
2020-05-06	219-946	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	LAKE STA	IN
2020-05-06	224-332	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	LAKEFOREST	IL
2020-05-06	308-302	0XXX1XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NE	3233	TRYON	NE
2020-05-06	309-614	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SMITHFIELD	IL
2020-05-06	469-823	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCKINNEY	TX
2020-05-06	765-842	1XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CAYUGA	IN
2020-05-06	804-587	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	CALLAO	VA
2020-05-06	870-649	0XXX2XXX · 2 holders which blocks →	E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR	095A	STUTTGART	AR
2020-05-06	931-531	1XXX2XXX5XXX6XXX7XXX8XXX which blocks →	ONVOY, LLC - TN	525E	WAYNESBORO	TN
2020-05-05	548-994	not yet reported which blocks →	TELUS Mobility	8303	Kitchener-Waterloo	—
2020-05-05	561-481	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	BOCA RATON	FL
2020-05-05	618-415	0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	BEECHER CY	IL
2020-05-05	618-502	0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	FIELDON	IL
2020-05-05	618-506	0XXX1XXX6XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	HETTICK	IL
2020-05-05	618-552	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	SANDOVAL	IL
2020-05-05	667-280	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VONAGE AMERICA LLC	197D	ELLICOTTCY	MD
2020-05-05	782-582	not yet reported which blocks →	Fibernetics Corporation	464D	Truro	—
2020-05-05	782-583	not yet reported which blocks →	Fibernetics Corporation	464D	Kentville	—
2020-05-05	782-584	not yet reported which blocks →	Fibernetics Corporation	464D	Bridgewater	—
2020-05-05	782-585	not yet reported which blocks →	Fibernetics Corporation	464D	Amherst	—
2020-05-05	862-356	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	BUTLER	NJ
2020-05-05	908-529	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	BERNARDSVL	NJ
2020-05-04	206-990	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - WA	7146	SEATTLE	WA
2020-05-04	229-427	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	VALDOSTA	GA
2020-05-04	469-819	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	TERRELL	TX
2020-05-04	469-822	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2020-05-04	470-605	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2020-05-04	804-584	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	RICHMOND	VA
2020-05-04	864-581	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ANDERSON	SC
2020-05-04	910-786	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	TROY	NC
2020-05-04	971-378	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	478J	PORTLAND	OR
2020-05-01	440-755	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	ASHTABULA	OH
2020-05-01	689-219	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	ORLANDO	FL
2020-05-01	773-923	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN03	IL
2020-05-01	779-272	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	ROCKFORD	IL
2020-05-01	786-767	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	MIAMI	FL
2020-05-01	929-922	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN03	NY

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.