NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 518
LEVEL 3 TELECOM OF NEW YORK, LP - NY 60
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
2017-03-22 518-513-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 VOORHEESVL NY
2015-10-16 518-608-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2015-09-24 518-631-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
2015-09-08 518-738-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2015-09-08 518-738-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2014-10-28 518-400-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ROUND LAKE NY
2014-09-16 518-776-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2014-04-10 518-450-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SARATOGSPG NY
2014-04-08 518-695-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHUYLERVL NY
2014-03-19 518-687-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 TROY NY
2012-02-10 518-545-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2012-01-30 518-415-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GLENSFALLS NY
2012-01-24 518-460-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GALWAY NY
2012-01-24 518-553-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 VALLEY FLS NY
2010-12-09 518-831-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
2010-08-26 518-306-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SARATOGSPG NY
2009-09-22 518-305-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-09-22 518-305-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BALLSTNSPA NY
2009-07-17 518-649-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2009-03-13 518-836-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
2008-10-29 518-649-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2007-08-01 518-640-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2007-07-26 518-836-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
2007-05-22 518-874-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 TROY NY
2006-12-05 518-886-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SARATOGSPG NY
2006-12-05 518-886-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SARATOGSPG NY
2006-08-21 518-966-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GREENVILLE NY
2006-08-14 518-635-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SOBETHLEHM NY
2006-07-31 518-893-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GREENFLCTR NY
2006-06-28 518-944-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
2006-04-27 518-881-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
2006-04-14 518-336-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 CASTLETON NY
2006-04-14 518-752-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GLOVERSVL NY
2006-03-17 518-640-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2006-02-09 518-640-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2005-08-03 518-820-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 CORINTH NY
2005-03-23 518-880-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 TROY NY
2005-03-04 518-640-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
2005-02-25 518-539-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 MECHANICVL NY
2005-02-24 518-872-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BERNE NY
2005-01-06 518-595-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALTAMONT NY
2004-11-12 518-640-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.