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
2016-02-12	873-736	not yet reported which blocks →	Iristel Inc.	154E	Ville-Marie	—
2016-02-12	902-917	not yet reported which blocks →	Iristel Inc.	154E	Shubenacadie	—
2016-02-12	902-918	not yet reported which blocks →	Iristel Inc.	154E	Summerside	—
2016-02-12	902-920	not yet reported which blocks →	Iristel Inc.	154E	Truro	—
2016-02-12	918-956	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF OKLAHOMA, LLC - OK	384H	CLEVELAND	OK
2016-02-11	316-333	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	NEWTON	KS
2016-02-11	475-470	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CT	639C	NORWALK	CT
2016-02-11	506-709	not yet reported which blocks →	Iristel Inc.	154E	Richibucto	—
2016-02-11	506-710	not yet reported which blocks →	Iristel Inc.	154E	Sackville	—
2016-02-11	506-712	not yet reported which blocks →	Iristel Inc.	154E	Shediac	—
2016-02-11	518-509	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	ROUND LAKE	NY
2016-02-11	587-494	not yet reported which blocks →	TELUS	8084	Taber	—
2016-02-11	587-849	not yet reported which blocks →	Iristel Inc.	154E	Spirit River	—
2016-02-11	587-850	not yet reported which blocks →	Iristel Inc.	154E	Ponoka	—
2016-02-11	587-851	not yet reported which blocks →	Iristel Inc.	154E	Rocky Mountain House	—
2016-02-11	587-852	not yet reported which blocks →	Iristel Inc.	154E	Sexsmith	—
2016-02-11	587-853	not yet reported which blocks →	Iristel Inc.	154E	Spruce Grove	—
2016-02-11	587-875	not yet reported which blocks →	Iristel Inc.	154E	Pincher Creek	—
2016-02-11	626-349	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ALHAMBRA	CA
2016-02-11	639-393	not yet reported which blocks →	Iristel Inc.	154E	Outlook	—
2016-02-11	639-394	not yet reported which blocks →	Iristel Inc.	154E	Rouleau	—
2016-02-11	650-750	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	HALFMOONBY	CA
2016-02-11	731-318	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MILAN	TN
2016-02-11	731-330	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	TRENTON	TN
2016-02-11	778-719	not yet reported which blocks →	Iristel Inc.	154E	Pineview	—
2016-02-11	778-720	not yet reported which blocks →	Iristel Inc.	154E	Princeton	—
2016-02-11	782-825	not yet reported which blocks →	Iristel Inc.	154E	Port Hawkesbury	—
2016-02-11	808-367	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HONOLULU	HI
2016-02-11	857-577	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	CHARLESTN	MA
2016-02-11	873-735	not yet reported which blocks →	Iristel Inc.	154E	Plessisville	—
2016-02-11	878-238	0–9 XXXall 10 · 4 holders which blocks →	LAUREL HIGHLAND TELEPHONE COMPANY - PA	738H	LIGONIER	PA
2016-02-11	916-975	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	SO PLACER	CA
2016-02-10	314-701	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MO	093F	MEHLVILLE	MO
2016-02-10	331-771	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	ST CHARLES	IL
2016-02-10	343-341	not yet reported which blocks →	Iristel Inc.	154E	Perth	—
2016-02-10	412-410	0–9 XXXall 10 · 4 holders which blocks →	BARR TELL USA, INC. - PA	752H	PTTSBGZON1	PA
2016-02-10	506-707	not yet reported which blocks →	Iristel Inc.	154E	Perth-Andover	—
2016-02-10	506-708	not yet reported which blocks →	Iristel Inc.	154E	Petitcodiac	—
2016-02-10	579-639	not yet reported which blocks →	Videotron Ltd.	8306	Mascouche	—
2016-02-10	586-377	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-10	586-449	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-10	587-493	not yet reported which blocks →	TELUS	8084	Cochrane	—
2016-02-10	587-872	not yet reported which blocks →	Iristel Inc.	154E	Olds	—
2016-02-10	587-874	not yet reported which blocks →	Iristel Inc.	154E	Oyen	—
2016-02-10	657-299	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2016-02-10	657-301	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2016-02-10	747-204	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	CANOGAPARK	CA
2016-02-10	765-731	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	BLOOMINGDALE HOME TELEPHONE COMPANY, INC. - IN	731H	ROCKVILLE	IN
2016-02-10	778-716	not yet reported which blocks →	Iristel Inc.	154E	Parksville	—
2016-02-10	782-824	not yet reported which blocks →	Iristel Inc.	154E	Musquodoboit Harbour	—

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.