NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

19 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 417
ONVOY, LLC - MO 12
HD CARRIER LLC 4
OPENTACT INC. 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 1
BANDWIDTH.COM CLEC, LLC - MO 1
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
2016-06-17 417-509-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-06-17 417-509-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-06-17 417-920-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-06-16 417-279-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LAMAR MO
2016-06-16 417-289-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BILLINGS MO
2016-06-08 417-210-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 SPRINGFLD MO
2016-05-20 417-943-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MARSHFIELD MO
2016-05-17 417-210-5XXX 5000–5999Assigned METROPCS, INC. 5562 SPRINGFLD MO
2016-05-06 417-210-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 SPRINGFLD MO
2016-04-27 417-297-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 BRANSON MO
2016-04-26 417-322-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON MO
2016-04-26 417-454-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEOSHO MO
2016-04-26 417-658-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEOSHO MO
2016-04-15 417-509-0XXX 0000–0999Assigned UNITED STATES CELLULAR - MO 6275 SPRINGFLD MO
2016-03-31 417-308-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AURORA MO
2016-03-31 417-308-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AURORA MO
2016-03-29 417-308-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 AURORA MO
2016-03-23 417-296-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ELDORDOSPG MO
2016-03-23 417-383-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BUFFALO MO
2016-03-23 417-821-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E THAYER MO
2016-03-22 417-758-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2016-03-22 417-758-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2016-03-16 417-322-1XXX 1000–1999Assigned UNITED STATES CELLULAR - MO 6275 LEBANON MO
2016-03-15 417-210-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-15 417-210-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-15 417-210-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-15 417-210-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-15 417-210-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-14 417-297-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 BRANSON MO
2016-03-14 417-297-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BRANSON MO
2016-03-11 417-324-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-324-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-324-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-920-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-920-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-920-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-11 417-920-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-03-09 417-292-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 BOLIVAR MO
2016-03-09 417-292-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 BOLIVAR MO
2016-03-09 417-292-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 BOLIVAR MO
2016-03-04 417-204-3XXX 3000–3999Assigned UNITED STATES CELLULAR - MO 6275 WESTPLAINS MO
2016-02-22 417-920-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2016-02-22 417-920-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2016-02-22 417-920-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2016-02-22 417-920-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2016-02-22 417-920-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2016-02-19 417-973-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRANSON MO
2016-02-19 417-973-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRANSON MO
2016-02-19 417-973-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRANSON MO
2016-02-19 417-973-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRANSON MO

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.