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 518
SLIC NETWORK SOLUTIONS, INC. - NY 33
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
2024-08-15 518-838-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C TROY NY
2023-03-14 518-803-8XXX 8000–8999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C CHESTERTN NY
2020-09-14 518-403-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C LK LUZERNE NY
2020-09-14 518-412-0XXX 0000–0999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C ELIZABTHTN NY
2020-09-14 518-467-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C ELENBGDPOT NY
2020-09-14 518-497-8XXX 8000–8999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C CHATEAUGAY NY
2020-09-14 518-600-4XXX 4000–4999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C SARANAC NY
2020-09-14 518-632-3XXX 3000–3999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C HARTFORD NY
2020-09-14 518-638-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C ARGYLE NY
2020-09-14 518-677-9XXX 9000–9999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C CAMBRIDGE NY
2020-09-14 518-808-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C FORT ANN NY
2020-09-14 518-855-4XXX 4000–4999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C GREENWICH NY
2020-09-14 518-909-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C GRANVILLE NY
2020-09-14 518-919-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C PUTNAM NY
2020-09-14 518-963-1XXX 1000–1999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C WILLSBORO NY
2020-09-14 518-975-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C KEESEVILLE NY
2020-09-14 518-980-7XXX 7000–7999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C FTCOVINGTN NY
2019-11-18 518-849-4XXX 4000–4999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C DANNEMORA NY
2018-10-09 518-802-9XXX 9000–9999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C PLATTSBG NY
2018-07-13 518-809-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C KEENE NY
2018-04-05 518-251-8XXX 8000–8999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C NORTHCREEK NY
2018-04-05 518-582-8XXX 8000–8999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C NEWCOMB NY
2017-11-10 518-585-1XXX 1000–1999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C TICONDROGA NY
2016-11-22 518-908-1XXX 1000–1999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C BRAINADSVL NY
2016-11-17 518-351-5XXX 5000–5999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C SCHROON LK NY
2016-11-17 518-735-9XXX 9000–9999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C LYON MT NY
2016-04-05 518-619-1XXX 1000–1999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C SARANAC LK NY
2015-02-04 518-624-0XXX 0000–0999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C LONG LAKE NY
2015-02-04 518-837-0XXX 0000–0999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C LAKEPLACID NY
2012-06-12 518-554-1XXX 1000–1999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C TUPPERLAKE NY
2010-11-02 518-529-3XXX 3000–3999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C MOIRA NY
2010-11-02 518-856-2XXX 2000–2999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C STREGISFLS NY
2010-10-25 518-317-7XXX 7000–7999Assigned SLIC NETWORK SOLUTIONS, INC. - NY 193C MALONE NY

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.