Recent thousands-block assignments

43 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 435

UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 40

TDS BROADBAND SERVICE LLC 1

PEERLESS NETWORK OF UTAH, LLC - UT 1

AHOI LLC 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 thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2014-02-20	435-731-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	PARK CITY	UT
2014-01-06	435-775-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	TOOELE	UT
2013-12-19	435-740-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2013-12-18	435-218-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2013-12-18	435-218-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2013-12-06	435-393-7XXX	7000–7999	Assigned	ONVOY, LLC - UT	871E	PAROWAN	UT
2013-12-06	435-393-8XXX	8000–8999	Assigned	ONVOY, LLC - UT	871E	PAROWAN	UT
2013-12-06	435-412-6XXX	6000–6999	Assigned	ONVOY, LLC - UT	871E	GLNCNYONCY	UT
2013-12-06	435-412-9XXX	9000–9999	Assigned	ONVOY, LLC - UT	871E	GLNCNYONCY	UT
2013-12-06	435-610-7XXX	7000–7999	Assigned	ONVOY, LLC - UT	871E	NEPHI	UT
2013-12-06	435-610-8XXX	8000–8999	Assigned	ONVOY, LLC - UT	871E	NEPHI	UT
2013-12-06	435-670-6XXX	6000–6999	Assigned	ONVOY, LLC - UT	871E	SALINA	UT
2013-12-06	435-670-7XXX	7000–7999	Assigned	ONVOY, LLC - UT	871E	SALINA	UT
2013-11-27	435-602-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - UT	3231	PARK CITY	UT
2013-11-26	435-292-6XXX	6000–6999	Assigned	ONVOY, LLC - UT	871E	WASATCH	UT
2013-11-26	435-292-8XXX	8000–8999	Assigned	ONVOY, LLC - UT	871E	WASATCH	UT
2013-11-14	435-241-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - UT	117F	TOOELE	UT
2013-11-14	435-241-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - UT	117F	TOOELE	UT
2013-11-14	435-339-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2013-11-04	435-799-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	LOGAN	UT
2013-10-14	435-527-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - UT	117F	MONROE	UT
2013-10-11	435-218-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2013-10-11	435-218-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2013-09-13	435-731-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	PARK CITY	UT
2013-08-26	435-799-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	LOGAN	UT
2013-08-20	435-558-6XXX	6000–6999	Assigned	ONVOY, LLC - UT	871E	RICHFIELD	UT
2013-07-31	435-218-0XXX	0000–0999	Assigned	CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV	791D	ST GEORGE	UT
2013-07-31	435-383-0XXX	0000–0999	Assigned	CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV	791D	CEDAR CITY	UT
2013-07-31	435-799-0XXX	0000–0999	Assigned	CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV	791D	LOGAN	UT
2013-06-21	435-339-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2013-06-07	435-310-3XXX	3000–3999	Assigned	FIRSTDIGITAL COMMUNICATIONS, LLC	716D	BEAVER	UT
2013-06-07	435-602-5XXX	5000–5999	Assigned	FIRSTDIGITAL COMMUNICATIONS, LLC	716D	PARK CITY	UT
2013-05-20	435-218-7XXX	7000–7999	Assigned	ONVOY, LLC - UT	871E	ST GEORGE	UT
2013-05-13	435-319-8XXX	8000–8999	Assigned	ONVOY, LLC - UT	871E	ST GEORGE	UT
2013-04-08	435-315-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	HEBER CITY	UT
2013-04-02	435-680-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2013-03-20	435-315-4XXX	4000–4999	Assigned	ONVOY, LLC - UT	871E	HEBER CITY	UT
2013-02-21	435-339-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2013-02-21	435-339-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2013-02-08	435-574-5XXX	5000–5999	Assigned	FIRSTDIGITAL COMMUNICATIONS, LLC	716D	ST GEORGE	UT
2013-02-08	435-799-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	LOGAN	UT
2012-12-11	435-200-9XXX	9000–9999	Assigned	ONVOY, LLC - UT	871E	PARK CITY	UT
2012-12-11	435-233-2XXX	2000–2999	Assigned	ONVOY, LLC - UT	871E	CEDAR CITY	UT
2012-12-11	435-233-9XXX	9000–9999	Assigned	ONVOY, LLC - UT	871E	CEDAR CITY	UT
2012-12-11	435-252-9XXX	9000–9999	Assigned	ONVOY, LLC - UT	871E	PARK CITY	UT
2012-12-11	435-315-0XXX	0000–0999	Assigned	ONVOY, LLC - UT	871E	HEBER CITY	UT
2012-12-11	435-527-2XXX	2000–2999	Assigned	ONVOY, LLC - UT	871E	MONROE	UT
2012-12-05	435-310-2XXX	2000–2999	Assigned	ONVOY, LLC - UT	871E	BEAVER	UT
2012-12-05	435-310-4XXX	4000–4999	Assigned	ONVOY, LLC - UT	871E	BEAVER	UT
2012-12-05	435-339-1XXX	1000–1999	Assigned	ONVOY, LLC - UT	871E	BRIGHAM CY	UT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.