Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 515

ONVOY, LLC - IA 1

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
2022-03-01	515-896	0XXX3XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	RIPPEY	IA
2022-02-22	515-622	0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GILMORE CY	IA
2022-02-22	515-627	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	STANHOPE	IA
2022-02-22	515-907	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OGDEN	IA
2022-02-22	515-915	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	GRANGER	IA
2022-02-21	515-366	0XXX3XXX6XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DEXTER	IA
2022-02-21	515-426	0XXX2XXX3XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DE SOTO	IA
2022-01-14	515-377	0XXX1XXX2XXX3XXX5XXX8XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	EARLHAM	IA
2022-01-14	515-716	0XXX1XXX7XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	PRAIRIE CY	IA
2022-01-14	515-784	0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	DAWSON	IA
2022-01-14	515-969	0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	DALLAS CTR	IA
2021-12-29	515-904	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	DES MOINES	IA
2021-12-14	515-522	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	ALGONA	IA
2021-12-14	515-588	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	EAGLEGROVE	IA
2021-12-09	515-945	1XXX2XXX3XXX4XXX · 3 holders which blocks →	AUREON COMMUNICATIONS, LLC	444G	RANDALL	IA
2021-12-08	515-581	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	UNITED STATES CELLULAR - IA	6266	ADEL	IA
2021-11-22	515-384	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	WINTERSET	IA
2021-09-29	515-567	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	AMES	IA
2021-09-28	515-524	4XXX6XXX9XXX · 3 holders which blocks →	PREMIER COMMUNICATIONS, INC. - IA	904D	WEBSTER CY	IA
2021-06-24	515-775	0XXX2XXX5XXX7XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	GRAND JCT	IA
2021-06-21	515-315	0XXX3XXX5XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BLAIRSBURG	IA
2021-06-21	515-550	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	BRADGATE	IA
2021-06-21	515-551	0XXX1XXX5XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CLARION	IA
2021-04-29	515-655	0–9 XXXall 10 · 4 holders which blocks →	TERRA NOVA TELECOM INC.	145J	DES MOINES	IA
2021-04-13	515-435	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	ROLAND	IA
2021-04-01	515-671	0–9 XXXall 10 · 5 holders which blocks →	IP HORIZON LLC	515J	DES MOINES	IA
2021-02-16	515-565	0XXX1XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	LIVERMORE	IA
2021-01-21	515-667	0XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	GOWRIE	IA
2020-12-31	515-534	0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IA	985E	STUART	IA
2020-10-20	515-895	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	DES MOINES	IA
2020-09-03	515-842	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	VAN METER	IA
2020-07-21	515-786	2XXX3XXX5XXX7XXX · 2 holders which blocks →	FRACTEL, LLC	965H	OTHO	IA
2020-07-21	515-944	4XXX9XXX · 2 holders which blocks →	FRACTEL, LLC	965H	WEST BEND	IA
2020-07-13	515-513	0–9 XXXall 10 · 4 holders which blocks →	CSC WIRELESS, LLC	425J	DES MOINES	IA
2020-04-27	515-877	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	FRACTEL, LLC	965H	POLK CITY	IA
2020-04-27	515-946	0XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	ELKHART	IA
2020-04-21	515-506	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	UNITED STATES CELLULAR - IA	6266	ADEL	IA
2020-01-16	515-807	0–9 XXXwhole prefix which blocks →	EDGETEL, LLC	179J	GOLDFIELD	IA
2019-12-27	515-355	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	WILLIAMS	IA
2019-12-27	515-529	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	COLFAX	IA
2019-12-27	515-600	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	LUVERNE	IA
2019-12-27	515-666	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	DES MOINES	IA
2019-12-27	515-755	0XXX1XXX4XXX5XXX7XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	WESLEY	IA
2019-12-27	515-900	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	BOONE	IA
2019-12-23	515-766	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	AMES	IA
2019-11-26	515-405	0XXX1XXX4XXX5XXX7XXX9XXX · 6 holders which blocks →	HD CARRIER LLC	321J	RENWICK	IA
2019-11-21	515-644	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	DES MOINES	IA
2019-11-20	515-416	0–9 XXXall 10 · 5 holders which blocks →	WIDE VOICE, LLC - IA	722G	DES MOINES	IA
2019-11-05	515-501	1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	MAXWELL	IA
2019-10-30	515-514	0–9 XXXall 10 · 4 holders which blocks →	AIRUS, INC - IA	423H	DES MOINES	IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.