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
2019-12-10	309-239	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	BLOOMINGTN	IL
2019-12-10	365-862	not yet reported which blocks →	ISP Telecom Inc.	4727	West Lincoln	—
2019-12-10	516-421	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NASSAUZN02	NY
2019-12-10	516-540	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NASSAUZN05	NY
2019-12-10	548-867	not yet reported which blocks →	ISP Telecom Inc.	4727	Ayr	—
2019-12-10	548-868	not yet reported which blocks →	ISP Telecom Inc.	4727	Breslau	—
2019-12-10	689-218	0–9 XXXall 10 · 2 holders which blocks →	ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND	7857	ORLANDO	FL
2019-12-09	207-815	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BIDDEFORD	ME
2019-12-09	209-582	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ATWATER	CA
2019-12-09	365-859	not yet reported which blocks →	ISP Telecom Inc.	4727	Caledonia	—
2019-12-09	365-860	not yet reported which blocks →	ISP Telecom Inc.	4727	Winona	—
2019-12-09	365-861	not yet reported which blocks →	ISP Telecom Inc.	4727	Hagersville	—
2019-12-09	365-892	not yet reported which blocks →	ISP Telecom Inc.	4727	Claremont	—
2019-12-09	365-893	not yet reported which blocks →	ISP Telecom Inc.	4727	Sutton	—
2019-12-09	365-895	not yet reported which blocks →	ISP Telecom Inc.	4727	Queensville	—
2019-12-09	603-800	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MEREDITH	NH
2019-12-09	603-999	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	SALEM	NH
2019-12-09	605-607	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	SIOUX FLS	SD
2019-12-09	616-271	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CALEDONIA	MI
2019-12-09	618-209	1XXX2XXX · 2 holders which blocks →	TELNYX LLC	073H	GOLCONDA	IL
2019-12-09	779-266	0XXX1XXX2XXX3XXX9XXX · 5 holders which blocks →	TELNYX LLC	073H	LANARK	IL
2019-12-09	810-243	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
2019-12-06	202-931	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN1	DC
2019-12-06	365-890	not yet reported which blocks →	ISP Telecom Inc.	4727	Gormley	—
2019-12-06	365-891	not yet reported which blocks →	ISP Telecom Inc.	4727	Stouffville	—
2019-12-06	563-298	3XXX7XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GUTTENBERG	IA
2019-12-06	608-717	1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NO FREEDOM	WI
2019-12-06	802-801	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - VT	451F	ENOSBG FLS	VT
2019-12-06	802-808	0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - VT	451F	GUILDHALL	VT
2019-12-06	952-243	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2019-12-05	236-252	not yet reported which blocks →	Bell Mobility	6574	South Kamloops	—
2019-12-05	276-241	0XXX1XXX2XXX · 3 holders which blocks →	TELNYX LLC	073H	OAKWOOD	VA
2019-12-05	316-766	0–9 XXXall 10 · 5 holders which blocks →	CORETEL KANSAS, INC. - KS	423J	DOUGLASS	KS
2019-12-05	316-837	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	CORETEL KANSAS, INC. - KS	423J	GARDEN PL	KS
2019-12-05	417-477	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FRACTEL, LLC	965H	MOUNTANGRV	MO
2019-12-05	417-488	4XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BOLIVAR	MO
2019-12-05	417-500	0XXX1XXX5XXX7XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	CABOOL	MO
2019-12-05	417-600	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 8 holders which blocks →	FRACTEL, LLC	965H	WILLARD	MO
2019-12-05	417-786	2XXX7XXX · 2 holders which blocks →	FRACTEL, LLC	965H	NIANGUA	MO
2019-12-05	417-899	0XXX2XXX4XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	BUFFALO	MO
2019-12-05	417-946	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	MANSFIELD	MO
2019-12-05	506-275	not yet reported which blocks →	Bell Mobility Aliant	329A	Shippagan	—
2019-12-05	579-276	not yet reported which blocks →	Bell Mobility	6574	Sorel	—
2019-12-05	639-299	not yet reported which blocks →	Iristel Inc.	154E	Kipling	—
2019-12-05	639-559	not yet reported which blocks →	Iristel Inc.	154E	Fort Qu'Appelle	—
2019-12-05	660-356	1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	HIGGINSVL	MO
2019-12-05	672-572	not yet reported which blocks →	Iristel Inc.	154E	Pineview	—
2019-12-05	709-312	not yet reported which blocks →	Bell Mobility Aliant	329A	Marystown	—
2019-12-05	782-262	not yet reported which blocks →	Bell Mobility Aliant	329A	Montague	—
2019-12-05	820-500	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	GAVIOTA	CA

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.