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 610
SERVICE ELECTRIC TELEPHONE COMPANY, LLC 29
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
2016-04-19 610-778-5XXX 5000–5999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 ALLENTOWN PA
2012-10-15 610-674-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 ALLENTOWN PA
2008-06-17 610-556-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 UHLERSTOWN PA
2007-05-16 610-297-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BETHLEHEM PA
2007-05-16 610-297-7XXX 7000–7999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BETHLEHEM PA
2007-05-16 610-849-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BETHLEHEM PA
2007-05-03 610-302-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BOYERTOWN PA
2007-05-03 610-652-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 SASSAMNSVL PA
2007-05-03 610-702-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BALLY PA
2007-05-03 610-901-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MORGANTOWN PA
2006-09-20 610-379-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LEHIGHTON PA
2003-01-29 610-665-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN29 PA
2003-01-15 610-235-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 W CHESTER PA
2003-01-15 610-850-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 POTTSTOWN PA
2003-01-14 610-227-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN23 PA
2003-01-14 610-229-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN25 PA
2003-01-14 610-234-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN31 PA
2003-01-14 610-243-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LENAPE PA
2003-01-14 610-362-9XXX 9000–9999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN14 PA
2003-01-14 610-423-9XXX 9000–9999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 EXTON PA
2003-01-14 610-471-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN11 PA
2003-01-14 610-480-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN12 PA
2003-01-14 610-535-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN26 PA
2003-01-14 610-545-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN10 PA
2003-01-14 610-553-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN17 PA
2003-01-14 610-707-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN22 PA
2003-01-14 610-860-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN21 PA
2003-01-14 610-938-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN13 PA
2001-10-08 610-401-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 READING 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.