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
2016-12-20	825-250	not yet reported which blocks →	Iristel Inc.	154E	High Level	—
2016-12-20	825-251	not yet reported which blocks →	Iristel Inc.	154E	Slave Lake	—
2016-12-20	873-869	not yet reported which blocks →	Videotron Ltd.	8306	Val-D'Or	—
2016-12-20	904-947	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	JACKSONVL	FL
2016-12-19	216-414	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	CLEVELAND	OH
2016-12-19	352-667	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BROOKSVL	FL
2016-12-19	562-588	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	ALAMITOS	CA
2016-12-19	580-769	0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA OK - LLC	530C	SAYRE	OK
2016-12-19	720-718	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9636	LONGMONT	CO
2016-12-19	786-654	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	NORTH DADE	FL
2016-12-19	816-319	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELNYX LLC	073H	EXCELSRSPG	MO
2016-12-19	865-507	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	KNOXVILLE	TN
2016-12-19	901-713	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MEMPHIS	TN
2016-12-19	937-200	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	FAIRBORN	OH
2016-12-19	951-783	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	RIVERSIDE	CA
2016-12-16	470-356	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NW	GA
2016-12-16	470-515	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NW	GA
2016-12-16	803-722	0–9 XXXall 10 · 3 holders which blocks →	SOUTH CAROLINA NET, INC. - SC	1784	COLUMBIA	SC
2016-12-16	803-989	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	AIKEN	SC
2016-12-16	808-762	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - HI	9414	HONOLULU	HI
2016-12-16	864-775	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	GREENVILLE	SC
2016-12-16	980-556	0–9 XXXall 10 · 5 holders which blocks →	SOUTH CAROLINA NET, INC. - NC	511C	CHARLOTTE	NC
2016-12-15	205-864	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	BIRMINGHAM	AL
2016-12-15	209-308	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	MERCED	CA
2016-12-15	407-723	0–9 XXXall 10 · 4 holders which blocks →	METROPCS NETWORKS, LLC	899D	ORLANDO	FL
2016-12-15	424-414	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	INGLEWOOD	CA
2016-12-15	442-515	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	SAN MARCOS	CA
2016-12-15	505-494	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	ALBUQURQUE	NM
2016-12-15	516-309	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	NASSAUZN02	NY
2016-12-15	530-399	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	CHICO	CA
2016-12-15	559-409	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	VISALIA	CA
2016-12-15	612-540	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2016-12-15	620-407	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS	7593	MEADE	KS
2016-12-15	628-209	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	NOVATO	CA
2016-12-15	661-404	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	BKFD MAIN	CA
2016-12-15	831-230	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	MONTEREY	CA
2016-12-15	848-249	0–9 XXXall 10 · 8 holders which blocks →	METROPCS, INC.	5562	FARMINGDL	NJ
2016-12-14	325-309	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ALBANY	TX
2016-12-14	385-429	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	SALT LAKE	UT
2016-12-14	405-653	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	OKLA CITY	OK
2016-12-14	440-872	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	TRINITY	OH
2016-12-14	502-916	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	LOUISVILLE	KY
2016-12-14	504-618	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	KENNER	LA
2016-12-14	539-292	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	TULSA	OK
2016-12-14	720-572	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CO	7378	DENVER	CO
2016-12-14	734-318	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	WYANDOTTE	MI
2016-12-14	803-849	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	COLUMBIA	SC
2016-12-14	843-459	0–9 XXXall 10 · 7 holders which blocks →	TELNYX LLC	073H	CHARLESTON	SC
2016-12-14	864-754	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	SPARTANBG	SC
2016-12-13	224-570	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	WAUKEGAN	IL

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.