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
2015-09-22 385-539-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-09-22 385-539-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-09-17 385-549-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-09-17 385-549-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-09-17 385-549-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-09-17 385-549-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-09-17 385-775-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-09-17 385-775-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-17 385-775-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2015-09-14 385-298-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2015-09-14 385-298-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2015-09-14 385-529-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2015-09-01 385-383-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLEARFIELD UT
2015-09-01 385-529-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-09-01 385-529-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-09-01 385-529-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-09-01 385-529-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-09-01 385-900-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-09-01 385-900-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2015-08-31 385-383-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLEARFIELD UT
2015-08-28 385-895-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H PAYSON UT
2015-08-24 385-230-6XXX 6000–6999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H PROVO UT
2015-08-24 385-298-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H OGDEN UT
2015-08-24 385-323-9XXX 9000–9999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H PLEASATGRV UT
2015-08-24 385-347-4XXX 4000–4999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H MURRAY UT
2015-08-24 385-350-6XXX 6000–6999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H MORGAN UT
2015-08-24 385-352-9XXX 9000–9999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H LEHI UT
2015-08-24 385-383-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H CLEARFIELD UT
2015-08-24 385-448-2XXX 2000–2999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SPANIHFORK UT
2015-08-24 385-529-0XXX 0000–0999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H MIDVALE UT
2015-08-24 385-685-9XXX 9000–9999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SPRINGVL UT
2015-08-24 385-988-1XXX 1000–1999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H FARMINGTON UT
2015-08-21 385-775-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-08-21 385-775-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-08-21 385-775-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-08-21 385-775-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-08-21 385-775-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-08-19 385-243-6XXX 6000–6999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H BOUNTIFUL UT
2015-08-19 385-449-6XXX 6000–6999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H ALTA UT
2015-08-19 385-498-8XXX 8000–8999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H AMERCNFORK UT
2015-08-11 385-535-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-08-11 385-535-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 PROVO UT
2015-08-10 385-498-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2015-08-07 385-383-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 CLEARFIELD UT
2015-08-04 385-249-5XXX 5000–5999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SALT LAKE UT
2015-08-04 385-323-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PLEASATGRV UT
2015-08-04 385-775-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-08-04 385-775-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 SALT LAKE UT
2015-07-29 385-347-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MURRAY UT
2015-07-29 385-368-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 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.