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
2019-07-11 385-334-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-10 385-283-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2019-07-10 385-283-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2019-07-10 385-314-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2019-07-08 385-304-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-304-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-304-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-304-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-327-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPRINGVL UT
2019-07-08 385-339-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-08 385-339-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-07-03 385-301-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-07-03 385-301-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-07-03 385-301-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-07-03 385-344-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPANIHFORK UT
2019-07-02 385-283-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2019-07-02 385-283-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2019-07-02 385-326-0XXX 0000–0999Assigned TELNYX LLC 073H OGDEN UT
2019-06-28 385-308-1XXX 1000–1999Assigned VOIP INNOVATIONS, LLC 597F MIDVALE UT
2019-06-28 385-432-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2019-06-26 385-301-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2019-06-26 385-326-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2019-06-25 385-284-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MORGAN UT
2019-06-20 385-324-8XXX 8000–8999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H BOUNTIFUL UT
2019-06-20 385-479-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2019-06-20 385-479-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2019-06-19 385-401-1XXX 1000–1999Assigned VOIP INNOVATIONS, LLC 597F SALT LAKE UT
2019-06-11 385-314-1XXX 1000–1999Assigned METROPCS, INC. 5562 PROVO UT
2019-06-11 385-314-2XXX 2000–2999Assigned METROPCS, INC. 5562 PROVO UT
2019-06-11 385-314-5XXX 5000–5999Assigned METROPCS, INC. 5562 PROVO UT
2019-06-11 385-314-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVO UT
2019-06-11 385-314-8XXX 8000–8999Assigned METROPCS, INC. 5562 PROVO UT
2019-06-10 385-324-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2019-06-10 385-324-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2019-06-10 385-338-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E LEHI UT
2019-06-10 385-338-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E LEHI UT
2019-06-10 385-438-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E PAYSON UT
2019-06-10 385-438-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E PAYSON UT
2019-06-10 385-442-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E CLEARFIELD UT
2019-06-10 385-442-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E CLEARFIELD UT
2019-06-05 385-284-2XXX 2000–2999Assigned ONVOY, LLC - UT 871E MORGAN UT
2019-06-05 385-284-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E MORGAN UT
2019-06-05 385-296-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE 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.