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
2020-05-19 417-512-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 SPRINGFLD MO
2020-05-13 417-943-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MARSHFIELD MO
2020-05-08 417-896-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 CASSVILLE MO
2020-05-04 417-512-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 SPRINGFLD MO
2020-05-01 417-688-8XXX 8000–8999Assigned FRACTEL, LLC 965H LOWRY CITY MO
2020-04-29 417-507-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D SPRINGFLD MO
2020-04-29 417-507-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D SPRINGFLD MO
2020-04-09 417-614-8XXX 8000–8999Assigned MCC TELEPHONY LLC 593K CARL JCT MO
2020-04-07 417-531-4XXX 4000–4999Assigned UNITED STATES CELLULAR - MO 6275 LEBANON MO
2020-04-06 417-205-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MT VERNON MO
2020-04-02 417-237-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2020-04-02 417-237-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2020-04-02 417-237-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2020-04-02 417-237-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2020-04-02 417-237-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE MO
2020-04-02 417-458-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ROBY MO
2020-03-31 417-701-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARTVILLE MO
2020-03-27 417-644-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LOWRY CITY MO
2020-03-27 417-687-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E JERICO SPG MO
2020-03-25 417-377-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MANES MO
2020-03-23 417-453-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E NEBO MO
2020-03-23 417-944-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MILO MO
2020-03-18 417-462-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E GROVESPRNG MO
2020-03-18 417-754-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HUMANSVL MO
2020-03-13 417-433-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E WALKER MO
2020-03-13 417-480-9XXX 9000–9999Assigned AT&T - LOCAL 7421 ASH GROVE MO
2020-03-13 417-802-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E STOTTSCITY MO
2020-03-06 417-275-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E COLLINS MO
2020-03-06 417-995-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E DADEVILLE MO
2020-03-03 417-591-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ARCOLA MO
2020-03-03 417-922-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BRONAUGH MO
2020-03-02 417-487-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SCHELLCITY MO
2020-03-02 417-954-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E RAYMONDVL MO
2020-02-26 417-507-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGFLD MO
2020-02-25 417-884-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SHELDON MO
2020-02-25 417-948-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E VANZANT MO
2020-02-21 417-638-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E STARK CITY MO
2020-02-21 417-640-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E AVILLA MO
2020-02-19 417-938-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MYRTLE MO
2020-02-18 417-842-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MINDENMINS MO
2020-02-18 417-843-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LIBERAL MO
2020-02-11 417-519-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E VERONA MO
2020-02-11 417-778-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ALTON MO
2020-02-06 417-657-2XXX 2000–2999Assigned ONVOY, LLC - MO 093F LEBANON MO
2020-02-06 417-657-3XXX 3000–3999Assigned ONVOY, LLC - MO 093F LEBANON MO
2020-02-06 417-657-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F LEBANON MO
2020-02-06 417-677-4XXX 4000–4999Assigned CSC VOICE, LLC 612K FORSYTH MO
2020-02-04 417-366-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 MT VERNON MO
2020-01-28 417-244-1XXX 1000–1999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F EFORTSCOTT MO
2020-01-23 417-989-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 GAINESVL 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.