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
2012-03-20	681-242	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	FALLNGWTRS	WV
2012-03-20	706-784	0–9 XXXall 10 · 5 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ROME	GA
2012-03-20	757-738	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NRFOLKZON3	VA
2012-03-20	778-382	not yet reported which blocks →	Fibernetics Corporation	464D	North Vancouver	—
2012-03-20	807-789	not yet reported which blocks →	Iristel Inc.	154E	Fort Frances	—
2012-03-20	808-278	0–9 XXXall 10 · 6 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	LIHUE	HI
2012-03-20	808-515	0–9 XXXall 10 · 4 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	LANAI CITY	HI
2012-03-20	808-556	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	KAUNAKAKAI	HI
2012-03-20	808-799	0–9 XXXall 10 · 3 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	HONOLULU	HI
2012-03-20	808-866	0–9 XXXall 10 · 3 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	WAILUKU	HI
2012-03-19	206-477	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9638	SEATTLE	WA
2012-03-19	226-401	not yet reported which blocks →	Iristel Inc.	154E	Brantford	—
2012-03-19	289-306	not yet reported which blocks →	Iristel Inc.	154E	Markham	—
2012-03-19	289-796	not yet reported which blocks →	Iristel Inc.	154E	Aurora	—
2012-03-19	312-508	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	CHICGOZN01	IL
2012-03-19	401-406	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2012-03-19	438-700	not yet reported which blocks →	Iristel Inc.	154E	Ile-Perrot	—
2012-03-19	450-489	not yet reported which blocks →	Iristel Inc.	154E	Chambly	—
2012-03-19	579-229	not yet reported which blocks →	TELUS Quebec	2243	Beloeil	—
2012-03-19	581-221	not yet reported which blocks →	Iristel Inc.	154E	Chicoutimi	—
2012-03-19	609-603	not yet reported which blocks →	CORETEL NEW JERSEY, INC. - NJ	482F	PLEASANTVL	NJ
2012-03-19	612-323	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2012-03-19	702-758	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	LAS VEGAS	NV
2012-03-19	719-368	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	COLORDOSPG	CO
2012-03-19	808-365	0–9 XXXall 10 · 5 holders which blocks →	HAWAIIAN TELCOM, INC. - HI	3100	HILO	HI
2012-03-19	870-301	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AUGUSTA	AR
2012-03-19	937-607	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DAYTON	OH
2012-03-16	408-664	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SUNNYVALE	CA
2012-03-16	412-463	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2012-03-16	412-515	0–9 XXXall 10 · 8 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	PTTSBGZON1	PA
2012-03-16	631-490	0–9 XXXall 10 · 7 holders which blocks →	TELENGY L.L.C. - NY	473G	ATLANTIC	NY
2012-03-16	631-502	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	TELENGY L.L.C. - NY	473G	JAMESPORT	NY
2012-03-16	631-542	0–9 XXXall 10 · 9 holders which blocks →	TELENGY L.L.C. - NY	473G	RONKONKOMA	NY
2012-03-16	646-664	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NWYRCYZN01	NY
2012-03-16	702-720	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2012-03-16	705-486	not yet reported which blocks →	Fibernetics Corporation	464D	Peterborough	—
2012-03-16	714-509	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	ORANGE	CA
2012-03-16	813-360	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPACEN	FL
2012-03-16	909-341	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	RIALTO	CA
2012-03-16	919-243	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	CLAYTON	NC
2012-03-16	936-207	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	CONROE	TX
2012-03-15	289-378	not yet reported which blocks →	Fibernetics Corporation	464D	Markham	—
2012-03-15	289-379	not yet reported which blocks →	Fibernetics Corporation	464D	Richmond Hill	—
2012-03-15	404-205	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2012-03-15	404-445	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2012-03-15	404-615	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2012-03-15	404-620	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2012-03-15	423-530	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	KINGSPORT	TN
2012-03-15	440-217	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	HILLCREST	OH
2012-03-15	470-235	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA

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.