NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 610
ONVOY, LLC - PA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 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
2019-04-08 610-798-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E ALLENTOWN PA
2019-04-05 610-228-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-228-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-552-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-552-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-552-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-602-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-602-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-602-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-05 610-986-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN24 PA
2019-04-04 610-257-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-257-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-257-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-257-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-538-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-538-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-538-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-538-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-784-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-784-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-980-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-980-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-980-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-980-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-04-04 610-980-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 PA
2019-03-28 610-226-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-28 610-243-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-28 610-243-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-28 610-243-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-28 610-243-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LENAPE PA
2019-03-28 610-342-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-28 610-342-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-28 610-342-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-28 610-343-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-343-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-343-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-343-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-343-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-343-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DOWNINGTN PA
2019-03-28 610-454-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-28 610-487-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLLEGEVL PA
2019-03-21 610-671-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PHPHSBZN29 PA
2019-03-21 610-671-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PHPHSBZN29 PA
2019-03-13 610-242-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WESTTOWN PA
2019-03-13 610-242-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WESTTOWN PA
2019-03-13 610-242-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WESTTOWN PA
2019-03-13 610-294-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 UHLERSTOWN PA
2019-03-13 610-294-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 UHLERSTOWN PA
2019-03-13 610-346-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SPRINGTOWN PA
2019-03-12 610-257-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN23 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.