NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 870
E. RITTER COMMUNICATIONS, LLC 78
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-08-18 870-452-3XXX 3000–3999Assigned E. RITTER COMMUNICATIONS, LLC 128L EL DORADO AR
2026-08-18 870-595-6XXX 6000–6999Assigned E. RITTER COMMUNICATIONS, LLC 128L RECTOR AR
2026-08-18 870-987-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MALLARD PT AR
2025-12-15 870-960-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L PINE BLUFF AR
2023-02-27 870-785-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L OIL TROUGH AR
2022-12-21 870-676-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MIDWAY AR
2022-12-20 870-766-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L ALTHEIMER AR
2022-05-26 870-851-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L CRAWFODSVL AR
2022-05-26 870-889-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L HUGHES AR
2022-05-26 870-891-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L NEWARK AR
2022-05-24 870-244-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L EARLE AR
2021-05-24 870-556-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L PINE BLUFF AR
2020-12-17 870-361-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L TEXARKANA AR
2020-10-14 870-729-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L HOPE AR
2020-08-17 870-301-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L AUGUSTA AR
2020-04-28 870-205-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L PARAGOULD AR
2020-02-05 870-293-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L ARKADLPHIA AR
2019-11-29 870-569-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L BATESVILLE AR
2018-08-29 870-324-8XXX 8000–8999Assigned E. RITTER COMMUNICATIONS, LLC 128L PIGGOTT AR
2018-02-15 870-380-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L PINE BLUFF AR
2017-08-01 870-205-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L PARAGOULD AR
2017-07-24 870-549-3XXX 3000–3999Assigned E. RITTER COMMUNICATIONS, LLC 128L OSCEOLA AR
2017-06-29 870-701-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L MT HOME AR
2017-01-23 870-938-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2016-10-14 870-212-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L PARAGOULD AR
2016-04-28 870-340-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2015-12-24 870-333-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2015-08-11 870-701-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MT HOME AR
2015-07-17 870-714-3XXX 3000–3999Assigned E. RITTER COMMUNICATIONS, LLC 128L HELENA AR
2014-09-02 870-333-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2014-09-02 870-857-4XXX 4000–4999Assigned E. RITTER COMMUNICATIONS, LLC 128L CORNING AR
2014-03-10 870-495-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L NEWPORT AR
2014-03-07 870-281-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L BLYTHEVL AR
2014-03-07 870-333-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2013-07-25 870-206-9XXX 9000–9999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2013-07-24 870-202-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L POCAHONTAS AR
2013-07-24 870-298-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MARIANNA AR
2011-03-16 870-824-6XXX 6000–6999Assigned E. RITTER COMMUNICATIONS, LLC 128L BLYTHEVL AR
2010-11-29 870-936-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-3XXX 3000–3999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-4XXX 4000–4999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-6XXX 6000–6999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-7XXX 7000–7999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-8XXX 8000–8999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2010-11-29 870-936-9XXX 9000–9999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2007-06-07 870-207-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR
2007-06-07 870-207-1XXX 1000–1999Assigned E. RITTER COMMUNICATIONS, LLC 128L JONESBORO AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.