NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

19 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 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
2012-12-18 417-344-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 LEBANON MO
2012-12-18 417-393-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 MONETT MO
2012-12-13 417-217-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 HOUSTON MO
2012-12-05 417-321-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 NEVADA MO
2012-11-19 417-252-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILLOW SPG MO
2012-11-19 417-665-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CASSVILLE MO
2012-11-16 417-545-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 FORSYTH MO
2012-11-09 417-204-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 WESTPLAINS MO
2012-11-06 417-283-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C NEVADA MO
2012-11-06 417-295-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C LAMAR MO
2012-11-06 417-372-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESTPLAINS MO
2012-11-06 417-372-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESTPLAINS MO
2012-11-06 417-456-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEOSHO MO
2012-10-24 417-771-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SPRINGFLD MO
2012-10-16 417-297-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 BRANSON MO
2012-09-28 417-456-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 NEOSHO MO
2012-09-14 417-296-8XXX 8000–8999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-09-14 417-391-3XXX 3000–3999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-09-14 417-400-9XXX 9000–9999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-09-14 417-698-8XXX 8000–8999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-09-11 417-381-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 NEVADA MO
2012-08-13 417-612-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-08-13 417-612-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-08-13 417-612-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-08-13 417-719-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-08-13 417-719-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-08-13 417-719-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-07-30 417-385-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E JOPLIN MO
2012-07-30 417-392-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E WEBB CITY MO
2012-07-30 417-393-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MONETT MO
2012-07-26 417-771-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2012-07-26 417-771-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2012-07-26 417-771-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2012-07-06 417-720-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K SPRINGFLD MO
2012-07-05 417-599-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BOLIVAR MO
2012-07-02 417-400-6XXX 6000–6999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-07-02 417-400-7XXX 7000–7999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-07-02 417-400-8XXX 8000–8999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-06-22 417-400-3XXX 3000–3999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-06-22 417-400-4XXX 4000–4999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-06-22 417-400-5XXX 5000–5999Assigned TELECOM NORTH AMERICA MOBILE INC 955F ELDORDOSPG MO
2012-05-31 417-317-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 JOPLIN MO
2012-05-31 417-392-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 WEBB CITY MO
2012-05-14 417-414-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-05-14 417-501-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-05-14 417-616-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-05-14 417-730-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SPRINGFLD MO
2012-05-07 417-241-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MARSHFIELD MO
2012-05-07 417-456-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7594 NEOSHO MO
2012-03-19 417-365-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 BRANSON MO

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.