NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

16 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 385
LEVEL 3 COMMUNICATIONS, LLC - UT 5
BANDWIDTH.COM CLEC, LLC - UT 5
NEW CINGULAR WIRELESS PCS, LLC 4
ONVOY, LLC - UT 2
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-05-15 385-292-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2019-05-13 385-339-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F AMERCNFORK UT
2019-05-08 385-284-1XXX 1000–1999Assigned TELNYX LLC 073H MORGAN UT
2019-05-07 385-287-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2019-05-07 385-287-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2019-05-07 385-287-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2019-05-07 385-287-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F LEHI UT
2019-05-07 385-304-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-05-07 385-304-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-05-07 385-304-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-30 385-296-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-296-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-302-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-302-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-302-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-302-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2019-04-30 385-328-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-30 385-328-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-29 385-294-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-294-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-294-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-294-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-400-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-400-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2019-04-29 385-552-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-29 385-552-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-29 385-552-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-29 385-552-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-29 385-552-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-29 385-552-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-04-24 385-425-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MURRAY UT
2019-04-23 385-270-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-04-23 385-270-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2019-04-23 385-284-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MORGAN UT
2019-04-23 385-284-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E MORGAN UT
2019-04-23 385-552-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2019-04-23 385-552-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E KAYSVILLE UT
2019-04-16 385-327-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-327-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPRINGVL UT
2019-04-16 385-328-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-16 385-328-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-16 385-328-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-16 385-328-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-16 385-328-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-04-16 385-328-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK 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.