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 570
SERVICE ELECTRIC TELEPHONE COMPANY, LLC 79
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
2015-06-22 570-649-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 TURBOTVL PA
2015-02-10 570-580-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MT POCONO PA
2014-02-12 570-513-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MANSFIELD PA
2013-08-06 570-870-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 TROY PA
2013-06-21 570-731-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 SAYRE PA
2013-06-04 570-623-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LITTLE MDW PA
2012-11-14 570-381-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 SO CANAAN PA
2012-11-14 570-571-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WAYMART PA
2012-10-18 570-706-9XXX 9000–9999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WILKSBARRE PA
2012-03-12 570-247-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 ROME PA
2012-03-12 570-358-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 ULSTER PA
2012-03-12 570-395-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WARREN CTR PA
2012-03-12 570-627-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 TOWANDA PA
2012-03-12 570-744-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LE RAYSVL PA
2012-02-21 570-382-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 OLYPHANT PA
2012-02-15 570-536-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 CARBONDALE PA
2012-02-08 570-254-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 CHAPMAN LK PA
2012-02-08 570-289-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BROOKLYN PA
2012-02-08 570-390-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 HAWLEY PA
2012-02-08 570-397-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 JERMYN PA
2012-02-08 570-616-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 HONESDALE PA
2012-02-08 570-630-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LAKE ARIEL PA
2012-02-08 570-689-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 HAMLIN PA
2012-02-08 570-795-7XXX 7000–7999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MOSCOW PA
2012-02-08 570-853-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 SUSQUHANNA PA
2012-02-08 570-857-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WALENPAPCK PA
2012-02-08 570-860-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 HALLSTEAD PA
2012-02-08 570-942-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 NICHOLSON PA
2011-03-01 570-235-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WILKSBARRE PA
2010-11-18 570-861-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 HAZLETON PA
2010-08-18 570-218-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 BERWICK PA
2010-02-23 570-437-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WASHIGTNVL PA
2010-01-25 570-583-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PORTLAND PA
2010-01-19 570-838-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WATSONTOWN PA
2009-12-21 570-768-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LEWISBURG PA
2009-04-15 570-652-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 TREMONT PA
2008-10-21 570-859-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 SHENANDOAH PA
2008-10-16 570-399-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MINERSVL PA
2008-10-16 570-624-2XXX 2000–2999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 POTTSVILLE PA
2008-04-18 570-626-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 TREVORTON PA
2008-04-18 570-920-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MANDATA PA
2008-03-21 570-246-5XXX 5000–5999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MILTON PA
2007-11-29 570-284-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 DANVILLE PA
2007-05-14 570-987-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 NUREMBERG PA
2007-05-03 570-359-3XXX 3000–3999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 CNYNGHDRMS PA
2007-05-03 570-379-6XXX 6000–6999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 WAPWALLOPN PA
2007-05-03 570-678-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 NUANGOLA PA
2007-04-20 570-768-4XXX 4000–4999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LEWISBURG PA
2005-06-13 570-701-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 NORTHUBRLD PA
2005-05-31 570-386-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 MANTZVILLE 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.