Recent prefix assignments

349 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
2005-04-28	630-901	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	NAPERVILLE	IL
2005-04-28	717-823	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	LANCASTER	PA
2005-04-28	804-589	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	LADYSMITH	VA
2005-04-28	864-704	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	GREENVILLE	SC
2005-04-28	918-509	2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	CUSHING	OK
2005-04-27	251-214	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MOBILE	AL
2005-04-27	337-505	0–9 XXXwhole prefix which blocks →	LEVEL 3 TELECOM OF LOUISIANA, LLC - LA	7488	LK CHARLES	LA
2005-04-27	412-651	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2005-04-27	484-238	0–9 XXXall 10 · 4 holders which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN30	PA
2005-04-27	530-739	0–9 XXXall 10 · 5 holders which blocks →	UNITED STATES CELLULAR - CA	6261	WEAVERVL	CA
2005-04-27	601-901	0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	TAYLORSVL	MS
2005-04-27	717-460	0–9 XXXall 10 · 2 holders which blocks →	VERIZON PENNSYLVANIA, INC.	9208	HARISBGZN1	PA
2005-04-27	785-656	6XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	HAYS	KS
2005-04-27	903-718	2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SHERMAN	TX
2005-04-27	904-497	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL JACKSONVILLE LICENSES, INC.	7472	JACKSONVL	FL
2005-04-27	909-609	0–9 XXXall 10 · 4 holders which blocks →	METROPCS NETWORKS, LLC	899D	FONTANA	CA
2005-04-27	940-233	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	BOWIE	TX
2005-04-26	215-667	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	PHLDLPHZN1	PA
2005-04-26	228-707	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	PEARLINGTN	MS
2005-04-26	228-901	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	HURLEY	MS
2005-04-26	289-290	not yet reported which blocks →	Zayo Canada Inc.	8304	Streetsville	—
2005-04-26	318-743	0XXX2XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	DOYLINE	LA
2005-04-26	318-905	0XXX1XXX3XXX4XXX5XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	BENTON	LA
2005-04-26	318-909	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	HAUGHTON	LA
2005-04-26	318-916	none assigned yet which blocks →	PAETEC ITEL, LLC	829J	MOORINGSPT	LA
2005-04-26	319-327	0–9 XXXall 10 · 4 holders which blocks →	UNITED STATES CELLULAR - IA	6266	INDEPNDNCE	IA
2005-04-26	337-333	0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	RAYNE	LA
2005-04-26	337-803	0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	DUSON	LA
2005-04-26	337-809	0XXX which blocks →	PAETEC ITEL, LLC	829J	FRANKLIN	LA
2005-04-26	337-904	0XXX1XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	LOREAUVL	LA
2005-04-26	337-915	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	CARENCRO	LA
2005-04-26	337-917	5XXX7XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	ERATH	LA
2005-04-26	403-536	not yet reported which blocks →	Zayo Canada Inc.	8304	Calgary	—
2005-04-26	615-681	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	GOODLETSVL	TN
2005-04-26	647-258	not yet reported which blocks →	Zayo Canada Inc.	8304	Toronto	—
2005-04-26	780-289	not yet reported which blocks →	TELUS Mobility	8301	Edmonton	—
2005-04-26	819-674	not yet reported which blocks →	TELUS Mobility	8303	Sherbrooke	—
2005-04-26	985-305	1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	PATTERSON	LA
2005-04-25	256-222	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	PAETEC ITEL, LLC	829J	SHEFFIELD	AL
2005-04-25	302-543	0–9 XXXall 10 · 4 holders which blocks →	VERIZON DELAWARE, INC.	9210	WILMINGTON	DE
2005-04-25	336-754	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC	7835	WALKERTOWN	NC
2005-04-25	337-806	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 TELECOM OF LOUISIANA, LLC - LA	7488	LAFAYETTE	LA
2005-04-25	601-843	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	DUFFEE	MS
2005-04-25	601-907	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	CROSSROADS	MS
2005-04-24	254-677	0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	TEMPLE	TX
2005-04-23	308-883	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	IMPERIAL	NE
2005-04-22	224-355	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	NORTHBROOK	IL
2005-04-22	224-636	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	NORTHBROOK	IL
2005-04-22	240-454	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	GAITHERSBG	MD
2005-04-22	303-498	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	DENVER	CO

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.