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
2020-08-14	209-703	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TUOLUMNE	CA
2020-08-14	210-891	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SANANTONIO	TX
2020-08-14	217-961	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	MATTOON	IL
2020-08-14	326-697	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ENGLEWOOD	OH
2020-08-14	332-373	0–9 XXXall 10 · 4 holders which blocks →	CORETEL NEW YORK, INC. - NY	1215	NWYRCYZN01	NY
2020-08-14	332-895	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	NWYRCYZN01	NY
2020-08-14	343-578	not yet reported which blocks →	ISP Telecom Inc.	4727	Harrowsmith	—
2020-08-14	352-662	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	BELLEVIEW	FL
2020-08-14	365-277	not yet reported which blocks →	ISP Telecom Inc.	4727	Campbellville	—
2020-08-14	365-278	not yet reported which blocks →	ISP Telecom Inc.	4727	Freelton	—
2020-08-14	386-377	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC - FL	937C	WELAKA	FL
2020-08-14	409-667	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	GALVESTON	TX
2020-08-14	430-999	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	ATLANTA	TX
2020-08-14	469-871	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	JOSEPHINE	TX
2020-08-14	479-396	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FAYETTEVL	AR
2020-08-14	513-750	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	CLERMONT	OH
2020-08-14	680-895	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	SYRACUSE	NY
2020-08-14	707-612	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ROSA	CA
2020-08-14	713-913	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	BARKER	TX
2020-08-14	716-617	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	BUFFALO	NY
2020-08-14	726-300	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	SANANTONIO	TX
2020-08-14	754-348	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	HOLLYWOOD	FL
2020-08-14	786-922	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	NORTH DADE	FL
2020-08-14	838-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ALBANY	NY
2020-08-14	854-895	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	CHARLESTON	SC
2020-08-14	856-410	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	HADDONFLD	NJ
2020-08-14	864-794	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	GREENVILLE	SC
2020-08-14	903-222	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	BELLSSAVOY	TX
2020-08-14	903-333	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	JEWETT	TX
2020-08-14	903-444	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	SHERMAN	TX
2020-08-14	908-401	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELIZABETH	NJ
2020-08-14	915-348	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	EL PASO	TX
2020-08-14	954-466	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	FTLAUDERDL	FL
2020-08-14	954-824	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	FTLAUDERDL	FL
2020-08-13	262-266	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	OCONOMOWOC	WI
2020-08-13	309-803	1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks →	NUSO, LLC	478J	CANTON	IL
2020-08-13	332-236	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	NWYRCYZN01	NY
2020-08-13	343-559	not yet reported which blocks →	ISP Telecom Inc.	4727	Arden	—
2020-08-13	343-560	not yet reported which blocks →	ISP Telecom Inc.	4727	Bloomfield	—
2020-08-13	343-561	not yet reported which blocks →	ISP Telecom Inc.	4727	Cardiff	—
2020-08-13	343-562	not yet reported which blocks →	ISP Telecom Inc.	4727	Picton	—
2020-08-13	343-577	not yet reported which blocks →	ISP Telecom Inc.	4727	Bath	—
2020-08-13	380-217	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	PLAIN CITY	OH
2020-08-13	434-240	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	478J	CHATHAM	VA
2020-08-13	442-329	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ESCONDIDO	CA
2020-08-13	463-240	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	OAKLANDON	IN
2020-08-13	470-627	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	NEWNAN	GA
2020-08-13	470-628	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	GAINESVL	GA
2020-08-13	470-634	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	BOWDON	GA
2020-08-13	506-282	not yet reported which blocks →	Bell Mobility Aliant	329A	Fredericton	—

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.