NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 810
ACD TELECOM, INC. - MI 51
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
2006-08-04 810-344-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 GRANDBLANC MI
2006-08-04 810-547-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 CLIMTMORRS MI
2006-08-04 810-660-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 LAPEER MI
2005-11-09 810-325-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 GOODELLS MI
2005-11-09 810-370-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 BYRON MI
2005-11-09 810-374-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 OTISVILLE MI
2005-11-09 810-410-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 FLINT MI
2005-11-09 810-535-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 MEMPHIS MI
2005-11-09 810-740-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ST CLAIR MI
2005-11-09 810-827-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 EMMETT MI
2005-11-09 810-844-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 BRIGHTON MI
2005-11-09 810-867-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 FLUSHING MI
2005-11-09 810-936-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 FENTON MI
2005-11-09 810-990-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 PORT HURON MI
2005-06-29 810-201-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 PT SANILAC MI
2005-06-29 810-267-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 LAPEER MI
2005-06-29 810-269-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 SANDUSKY MI
2005-06-29 810-327-4XXX 4000–4999Assigned ACD TELECOM, INC. - MI 3535 JEDDO MI
2005-06-29 810-367-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 SMITHS CRK MI
2005-06-29 810-374-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 OTISVILLE MI
2005-06-29 810-377-4XXX 4000–4999Assigned ACD TELECOM, INC. - MI 3535 LEXINGTON MI
2005-06-29 810-387-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 YALE MI
2005-06-29 810-388-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 PORT HURON MI
2005-06-29 810-420-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 MARINECITY MI
2005-06-29 810-458-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 LINDEN MI
2005-06-29 810-535-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 MEMPHIS MI
2005-06-29 810-641-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 SNOVER MI
2005-06-29 810-655-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 RANKIN MI
2005-06-29 810-678-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 METAMORA MI
2005-06-29 810-683-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 IMLAY CITY MI
2005-06-29 810-688-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 NORTH BRCH MI
2005-06-29 810-991-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 HARTLAND MI
2005-06-27 810-209-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BYRON MI
2005-06-27 810-315-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 DRYDEN MI
2005-06-27 810-324-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 AVOCA MI
2005-06-27 810-325-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 GOODELLS MI
2005-06-27 810-344-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 GRANDBLANC MI
2005-06-27 810-346-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BROWN CITY MI
2005-06-27 810-355-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BRIGHTON MI
2005-06-27 810-366-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 DECKERVL MI
2005-06-27 810-371-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 CAPAC MI
2005-06-27 810-373-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 FENTON MI
2005-06-27 810-384-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 EMMETT MI
2005-06-27 810-410-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 FLINT MI
2005-06-27 810-476-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 APPLEGATE MI
2005-06-27 810-512-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 ALGONAC MI
2005-06-27 810-545-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 COLUMBIAVL MI
2005-06-27 810-546-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 CROSWELL MI
2005-06-27 810-547-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CLIMTMORRS MI
2005-06-27 810-673-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ALMONT MI

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.