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
2020-04-13	267-807	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	PHLDLPHZN1	PA
2020-04-13	269-529	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	KALAMAZOO	MI
2020-04-13	272-229	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	CHAPMAN LK	PA
2020-04-13	608-686	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WI	225C	PORTAGE	WI
2020-04-13	657-434	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-04-10	213-523	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	LSAN DA 07	CA
2020-04-10	331-266	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ST CHARLES	IL
2020-04-10	361-263	0–9 XXXall 10 · 2 holders which blocks →	STPCS JOINT VENTURE, LLC	4290	ALICE	TX
2020-04-10	667-299	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	ANNAPOLIS	MD
2020-04-10	667-399	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	HD CARRIER LLC	321J	UNION BDG	MD
2020-04-10	949-894	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CA	649C	SADLBK VLY	CA
2020-04-09	216-327	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CLEVELAND	OH
2020-04-09	236-763	not yet reported which blocks →	TELUS	8086	Kelowna	—
2020-04-09	332-322	0–9 XXXwhole prefix which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN01	NY
2020-04-09	431-470	not yet reported which blocks →	Bell Mobility	6574	Winnipeg	—
2020-04-09	440-656	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	STRONGSVL	OH
2020-04-09	540-780	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	MT GILEAD	VA
2020-04-09	540-781	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - VA	138E	BLUEMONT	VA
2020-04-09	571-467	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - VA	079F	WSNGTNZN08	VA
2020-04-09	682-327	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WEATHERFD	TX
2020-04-09	763-343	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2020-04-09	856-746	0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	HD CARRIER LLC	321J	MULLICA HL	NJ
2020-04-09	952-520	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2020-04-09	972-654	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FRISCO	TX
2020-04-08	236-486	not yet reported which blocks →	TELUS	8086	Cranbrook	—
2020-04-08	431-482	not yet reported which blocks →	TELUS Integrated Communications	2782	Winnipeg	—
2020-04-08	469-824	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	ALLEN	TX
2020-04-08	479-384	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FORT SMITH	AR
2020-04-08	501-418	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOTSPRINGS	AR
2020-04-08	571-460	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN19	VA
2020-04-08	603-451	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CONCORD	NH
2020-04-08	618-373	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANITE CY	IL
2020-04-08	689-300	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	SANFORD	FL
2020-04-08	689-500	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	ORLANDO	FL
2020-04-08	803-558	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	ROCK HILL	SC
2020-04-08	806-710	0XXX1XXX2XXX7XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	DUMAS	TX
2020-04-08	909-791	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ARROWHEAD	CA
2020-04-07	205-964	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	PANOLA	AL
2020-04-07	206-593	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SEATTLE	WA
2020-04-07	346-427	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	APOLLO	TX
2020-04-07	469-799	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2020-04-07	559-507	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MADERA	CA
2020-04-07	579-333	not yet reported which blocks →	Fibernetics Corporation	464D	St-Marc	—
2020-04-07	619-854	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNDG SNDG	CA
2020-04-07	672-885	not yet reported which blocks →	Fibernetics Corporation	464D	Fort Langley	—
2020-04-07	672-886	not yet reported which blocks →	Fibernetics Corporation	464D	Port Coquitlam	—
2020-04-07	672-889	not yet reported which blocks →	Fibernetics Corporation	464D	Ladner	—
2020-04-07	707-697	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA ROSA	CA
2020-04-07	959-215	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW LONDON	CT
2020-04-06	210-851	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SANANTONIO	TX

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.