Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21

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
2021-02-03	365-370	not yet reported which blocks →	Fibernetics Corporation	464D	Brampton	—
2021-02-03	380-388	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	ALTON	OH
2021-02-03	380-500	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	WORTHINGTN	OH
2021-02-03	380-979	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	GROVE CITY	OH
2021-02-03	413-392	0XXX1XXX2XXX4XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NORTHFIELD	MA
2021-02-03	437-286	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2021-02-03	438-419	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2021-02-03	438-566	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2021-02-03	440-766	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	LORAIN	OH
2021-02-03	463-250	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	CARMEL	IN
2021-02-03	463-251	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELNYX LLC	073H	FISHERS	IN
2021-02-03	470-763	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	ATLANTA	GA
2021-02-03	479-448	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AR	348F	BENTONVL	AR
2021-02-03	480-885	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2021-02-03	505-451	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NM
2021-02-03	516-886	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	FARMINGDL	NY
2021-02-03	562-563	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	LONG BEACH	CA
2021-02-03	623-920	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2021-02-03	661-660	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SNCA SGCC	CA
2021-02-03	680-799	3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	COPENHAGEN	NY
2021-02-03	808-475	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	HONOLULU	HI
2021-02-03	854-855	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	GEORGETOWN	SC
2021-02-03	854-858	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	MTPLEASANT	SC
2021-02-03	862-640	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	MT VIEW	NJ
2021-02-03	864-776	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - SC	548E	SENECA	SC
2021-02-03	910-857	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NC	638E	ST PAULS	NC
2021-02-03	912-561	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	POOLER	GA
2021-02-03	929-939	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN10	NY
2021-02-03	934-201	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	HUNTINGTON	NY
2021-02-03	971-970	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PACIFIC CY	OR
2021-02-03	984-267	0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - NC	638E	FOUR OAKS	NC
2021-02-03	984-307	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NC	638E	SMITHFIELD	NC
2021-02-03	986-668	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - ID	689F	HAYDENLAKE	ID
2021-02-02	209-860	0–9 XXXall 10 · 5 holders which blocks →	UTILITY TELECOM GROUP, LLC - CA	9262	MODESTO	CA
2021-02-02	219-280	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IN	097D	VALPARAISO	IN
2021-02-02	252-476	0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks →	ONVOY, LLC - NC	638E	WHITAKERS	NC
2021-02-02	253-366	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WA	483E	TACOMA	WA
2021-02-02	309-858	1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	BIGGSVILLE	IL
2021-02-02	309-859	1XXX3XXX5XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	GULFPORT	IL
2021-02-02	425-386	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WA	483E	EVERETT	WA
2021-02-02	425-504	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WA	483E	BELLEVUE	WA
2021-02-02	437-640	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2021-02-02	585-573	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	RUSH	NY
2021-02-02	585-583	0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	SPRINGWTR	NY
2021-02-02	631-916	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	SHOREHAM	NY
2021-02-02	651-650	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MN	184D	LINDSTROM	MN
2021-02-02	661-518	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	TEHACHAPI	CA
2021-02-02	737-738	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - TX	903C	GEORGETOWN	TX
2021-02-02	747-528	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GLENDALE	CA
2021-02-02	775-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	RENO	NV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.