NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2020-10-22 385-382-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2020-10-22 385-386-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2020-10-22 385-993-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LEHI UT
2020-10-16 385-360-3XXX 3000–3999Assigned TWILIO INTERNATIONAL, INC. 506J SALT LAKE UT
2020-10-14 385-382-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2020-10-14 385-382-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2020-10-13 385-363-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-09 385-380-1XXX 1000–1999Assigned ALL WEST/UTAH, INC. 3881 OGDEN UT
2020-10-08 385-358-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-08 385-358-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-08 385-358-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-08 385-358-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-08 385-977-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-08 385-977-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2020-10-06 385-361-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-10-06 385-361-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-10-06 385-361-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-10-06 385-361-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-10-06 385-361-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MIDVALE UT
2020-10-06 385-993-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LEHI UT
2020-10-05 385-432-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J OGDEN UT
2020-09-30 385-758-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2020-09-30 385-758-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2020-09-30 385-758-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2020-09-30 385-758-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2020-09-30 385-758-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F CLEARFIELD UT
2020-09-16 385-977-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-09-15 385-600-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-09-15 385-600-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-09-15 385-600-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 OGDEN UT
2020-09-10 385-354-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-09-10 385-354-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-09-10 385-354-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-09-10 385-362-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT
2020-09-10 385-362-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.