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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-04-27 385-330-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2020-04-27 385-330-8XXX 8000–8999Assigned ONVOY, LLC - UT 871E PLEASATGRV UT
2020-04-21 385-326-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2020-04-17 385-479-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2020-04-17 385-799-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2020-04-17 385-799-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2020-04-16 385-317-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E MORGAN UT
2020-04-16 385-317-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E MORGAN UT
2020-04-16 385-324-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E BOUNTIFUL UT
2020-04-16 385-398-7XXX 7000–7999Assigned ONVOY, LLC - UT 871E SPRINGVL UT
2020-04-16 385-398-9XXX 9000–9999Assigned ONVOY, LLC - UT 871E SPRINGVL UT
2020-04-14 385-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-04-14 385-310-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-03-31 385-479-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2020-03-27 385-324-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H BOUNTIFUL UT
2020-03-27 385-326-2XXX 2000–2999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H OGDEN UT
2020-03-26 385-341-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-03-26 385-341-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-03-26 385-341-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-03-26 385-348-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-03-26 385-348-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-03-26 385-348-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-03-26 385-348-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-03-26 385-386-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-03-26 385-386-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-03-24 385-341-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-03-23 385-400-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-03-23 385-600-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-03-12 385-318-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MURRAY UT
2020-02-25 385-421-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 ALTA UT
2020-02-24 385-334-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H AMERCNFORK UT
2020-02-24 385-342-1XXX 1000–1999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H MIDVALE UT
2020-02-21 385-479-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2020-02-17 385-386-3XXX 3000–3999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-02-17 385-386-4XXX 4000–4999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-02-17 385-386-5XXX 5000–5999Assigned ONVOY, LLC - UT 871E SALT LAKE UT
2020-02-12 385-342-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-02-04 385-349-4XXX 4000–4999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H PROVO UT
2020-02-04 385-386-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SALT LAKE UT
2020-01-31 385-338-8XXX 8000–8999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H LEHI UT
2020-01-29 385-306-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-306-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-306-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-306-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-01-29 385-310-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE 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.