Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2004-10-27	706-801	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	HAMILTON	GA
2004-10-27	706-813	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	HOGANSVL	GA
2004-10-27	706-890	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	CUSSETA	GA
2004-10-27	731-907	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	HORNBEAK	TN
2004-10-27	850-312	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	MUNSON	FL
2004-10-27	850-367	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	JAY	FL
2004-10-27	850-396	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	HOLLEYNVRR	FL
2004-10-27	850-397	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	SUNNYHILLS	FL
2004-10-27	850-403	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	YONGSTFNTN	FL
2004-10-27	865-630	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	LAKE CITY	TN
2004-10-27	912-312	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	RICHMONDHL	GA
2004-10-27	931-516	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	CUMBERLDCY	TN
2004-10-27	970-279	0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	BASALT	CO
2004-10-27	970-344	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	BERTHOUD	CO
2004-10-27	970-639	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	FRUITA	CO
2004-10-27	970-660	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	JOHNSTMLKN	CO
2004-10-27	989-668	1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	WESTPHALIA BROADBAND, INC. - MI	591C	ST JOHNS	MI
2004-10-26	270-681	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - KY	4369	JORDAN	KY
2004-10-26	406-599	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	BOZEMAN	MT
2004-10-26	406-924	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	BELGRADE	MT
2004-10-26	409-594	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JASPER	TX
2004-10-26	418-757	not yet reported which blocks →	TELUS Quebec	8083	Saint-Flavien	—
2004-10-26	423-454	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	DECATUR	TN
2004-10-26	423-665	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	CHARLESTON	TN
2004-10-26	423-799	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	SPRINGCITY	TN
2004-10-26	615-270	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	EASTSANGO	TN
2004-10-26	615-685	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	SOFREDONIA	TN
2004-10-26	616-477	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	GRAND RPDS	MI
2004-10-26	715-514	0–9 XXXall 10 · 3 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	EAU CLAIRE	WI
2004-10-26	731-393	0–9 XXXall 10 · 9 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	MCKENZIE	TN
2004-10-26	731-451	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	HENNING	TN
2004-10-26	731-472	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	MIDDLETON	TN
2004-10-26	731-474	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	GIBSON	TN
2004-10-26	731-483	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	DYER	TN
2004-10-26	731-503	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	NEWBERN	TN
2004-10-26	731-577	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	BETHEL SPG	TN
2004-10-26	731-624	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	TROY	TN
2004-10-26	731-732	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	GRAND JCT	TN
2004-10-26	731-859	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	WHITEVILLE	TN
2004-10-26	731-903	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	HALLS	TN
2004-10-26	731-937	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	KENTON	TN
2004-10-26	819-433	not yet reported which blocks →	Telebec Ltee.	8239	Arthabaska	—
2004-10-26	865-245	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	ROCKWOOD	TN
2004-10-26	865-730	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	OLIVER SPG	TN
2004-10-26	865-761	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	WHITE PINE	TN
2004-10-26	865-935	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	BEAN STATN	TN
2004-10-26	931-683	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	CULLEOKA	TN
2004-10-26	931-805	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	HAMPSHIRE	TN
2004-10-26	931-813	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	WARTRACE	TN
2004-10-25	214-594	0–9 XXXwhole prefix which blocks →	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	IRVING	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.