NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 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, all time — NPA 272
CORE COMMUNICATIONS, INC. - PA 128
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
2021-11-30 272-634-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BERWICK PA
2021-10-11 272-467-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDDLEBURG PA
2021-10-06 272-634-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BERWICK PA
2021-10-06 272-636-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DINGMAFRRY PA
2021-08-31 272-446-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WILKSBARRE PA
2019-03-13 272-224-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2019-03-13 272-224-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2019-03-13 272-224-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2019-03-13 272-466-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2019-03-13 272-466-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2019-03-13 272-466-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2019-03-13 272-666-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAMAQUA PA
2019-03-13 272-666-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAMAQUA PA
2019-03-13 272-786-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2019-03-13 272-786-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2019-03-11 272-219-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT POCONO PA
2019-02-04 272-224-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2019-02-04 272-226-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BERWICK PA
2019-02-04 272-786-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2018-10-17 272-420-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 STROUDSBG PA
2018-10-17 272-420-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 STROUDSBG PA
2018-10-17 272-420-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 STROUDSBG PA
2018-10-17 272-420-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 STROUDSBG PA
2018-10-12 272-221-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-12 272-221-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-10-11 272-270-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-270-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-295-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-11 272-295-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLOOMSBURG PA
2018-10-10 272-435-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-10-10 272-435-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-10-10 272-435-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-10-10 272-435-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-10-10 272-435-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-10-10 272-435-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAZLETON PA
2018-06-14 272-221-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 POTTSVILLE PA
2018-06-14 272-444-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SELINSGRV PA
2018-06-14 272-444-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SELINSGRV PA

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.