NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 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 906
OPENTACT INC. 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
2018-02-05 906-289-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KEWEENAW MI
2018-02-05 906-296-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAKELINDEN MI
2018-02-05 906-323-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MICHIGAMME MI
2018-02-05 906-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MENOMINEE MI
2018-02-05 906-372-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GWINN MI
2018-02-05 906-448-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRON MT MI
2018-02-05 906-486-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ISHPEMING MI
2018-02-05 906-498-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HERMANSVL MI
2018-02-05 906-675-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRONWOOD MI
2018-02-02 906-207-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CEDARVILLE MI
2018-02-02 906-212-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ESCANABA MI
2018-02-02 906-287-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ENGADINE MI
2018-02-02 906-292-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BREVORT MI
2018-02-02 906-345-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BIG BAY MI
2018-02-02 906-371-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CHAMPION MI
2018-02-02 906-384-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CORNELL MI
2018-02-02 906-459-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DE TOUR MI
2018-02-02 906-542-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHANNING MI
2018-02-02 906-628-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GARDEN MI
2018-02-02 906-825-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GLADSTONE MI
2018-02-02 906-875-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CRYSTALFLS MI
2018-02-02 906-934-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CALUMET MI
2018-02-02 906-978-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GULLIVER MI
2018-01-02 906-205-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARQUETTE MI
2017-12-05 906-212-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ESCANABA MI
2017-11-07 906-242-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C NEGAUNEE MI
2017-11-06 906-373-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIG BAY MI
2017-10-05 906-239-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 IRON MT MI
2017-10-03 906-379-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C SALTSTMARI MI
2017-10-03 906-379-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C SALTSTMARI MI
2017-10-03 906-379-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C SALTSTMARI MI
2017-10-03 906-748-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C SALTSTMARI MI
2017-09-28 906-214-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 IRON RIVER MI
2017-07-07 906-221-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C IRON MT MI
2017-07-07 906-259-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C SALTSTMARI MI
2017-06-21 906-212-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ESCANABA MI
2017-02-28 906-723-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E BARK RIVER MI
2017-02-22 906-372-8XXX 8000–8999Assigned UPPER PENINSULA TELEPHONE COMPANY - MI 746G GWINN MI
2017-02-15 906-828-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 IRON MT MI
2016-12-28 906-275-6XXX 6000–6999Assigned UPPER PENINSULA TELEPHONE COMPANY - MI 746G HOUGHTON MI
2016-12-28 906-379-6XXX 6000–6999Assigned UPPER PENINSULA TELEPHONE COMPANY - MI 746G SALTSTMARI MI
2016-12-28 906-702-6XXX 6000–6999Assigned UPPER PENINSULA TELEPHONE COMPANY - MI 746G ISHPEMING MI
2016-11-17 906-675-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E IRONWOOD MI
2016-10-31 906-240-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KINROSS MI
2016-09-14 906-451-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MARQUETTE MI
2016-09-12 906-792-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MENOMINEE MI
2016-07-22 906-464-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ISHPEMING MI
2016-06-27 906-259-8XXX 8000–8999Assigned CLEAR RATE COMMUNICATIONS, LLC 046L SALTSTMARI MI
2016-06-21 906-430-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST IGNACE MI
2016-06-21 906-430-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST IGNACE MI

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.