NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 412
ONVOY, LLC - PA 11
EXIANT COMMUNICATIONS LLC 2
BANDWIDTH.COM CLEC, LLC - PA 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
AHOI LLC 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
2018-10-22 412-701-8XXX 8000–8999Assigned METROPCS, INC. 5562 PTGSBNZN21 PA
2018-10-22 412-923-2XXX 2000–2999Assigned METROPCS, INC. 5562 PTTSBGZON7 PA
2018-10-12 412-203-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN15 PA
2018-10-12 412-245-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-254-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON6 PA
2018-10-12 412-259-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN16 PA
2018-10-12 412-299-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN15 PA
2018-10-12 412-317-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-326-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON5 PA
2018-10-12 412-376-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-388-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON6 PA
2018-10-12 412-426-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN20 PA
2018-10-12 412-426-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN20 PA
2018-10-12 412-426-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN20 PA
2018-10-12 412-448-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON5 PA
2018-10-12 412-448-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON5 PA
2018-10-12 412-453-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN18 PA
2018-10-12 412-502-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON6 PA
2018-10-12 412-587-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON7 PA
2018-10-12 412-646-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-663-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN16 PA
2018-10-12 412-733-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON7 PA
2018-10-12 412-733-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON7 PA
2018-10-12 412-842-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-842-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-10-12 412-843-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-843-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-843-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN22 PA
2018-10-12 412-872-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN10 PA
2018-10-12 412-872-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTGSBNZN10 PA
2018-10-09 412-550-1XXX 1000–1999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-550-2XXX 2000–2999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-550-8XXX 8000–8999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-550-9XXX 9000–9999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-785-8XXX 8000–8999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-785-9XXX 9000–9999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-909-0XXX 0000–0999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-909-1XXX 1000–1999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-909-2XXX 2000–2999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-10-09 412-909-3XXX 3000–3999Assigned NUSO, LLC 551G PTTSBGZON1 PA
2018-09-24 412-388-9XXX 9000–9999Assigned TELNYX LLC 073H PTTSBGZON6 PA
2018-09-21 412-550-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F PTTSBGZON1 PA
2018-08-20 412-283-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E PTGSBNZN12 PA
2018-08-20 412-314-8XXX 8000–8999Assigned ONVOY, LLC - PA 547E PTGSBNZN10 PA
2018-08-20 412-415-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E PTTSBGZON2 PA

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.