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
2019-01-14 385-320-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-14 385-320-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-10 385-287-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LEHI UT
2019-01-10 385-295-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-01-10 385-295-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-01-10 385-867-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2019-01-09 385-294-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2019-01-09 385-294-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2019-01-03 385-287-2XXX 2000–2999Assigned QWEST CORPORATION 9636 LEHI UT
2018-12-27 385-293-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2018-12-27 385-293-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2018-12-26 385-337-3XXX 3000–3999Assigned TELNYX LLC 073H MIDVALE UT
2018-12-21 385-273-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLEASATGRV UT
2018-12-21 385-273-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PLEASATGRV UT
2018-12-18 385-292-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2018-12-18 385-292-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2018-12-18 385-292-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2018-12-18 385-292-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROVO UT
2018-12-11 385-437-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-11 385-437-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-11 385-437-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-11 385-437-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-11 385-437-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-11 385-437-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - UT 117F SPANIHFORK UT
2018-12-05 385-293-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2018-12-04 385-280-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-12-04 385-280-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2018-12-04 385-286-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2018-11-30 385-281-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIDVALE UT
2018-11-27 385-276-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-276-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-276-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-27 385-281-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D MIDVALE UT
2018-11-26 385-280-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2018-11-26 385-280-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2018-11-08 385-295-1XXX 1000–1999Assigned PEERLESS NETWORK OF UTAH, LLC - UT 526H SALT LAKE UT
2018-11-08 385-295-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
2018-11-08 385-295-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE 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.