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
CENTURYLINK COMMUNICATIONS, LLC 86
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
2017-10-19 570-352-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HONESDALE PA
2017-10-19 570-398-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JERSEYSHOR PA
2017-10-19 570-473-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NORTHUBRLD PA
2017-05-31 570-402-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAYLORSBG PA
2017-05-31 570-545-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANSFIELD PA
2017-05-31 570-698-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAKE ARIEL PA
2016-01-21 570-927-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOCK HAVEN PA
2016-01-11 570-392-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYOMING PA
2016-01-11 570-427-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WEATHERLY PA
2016-01-11 570-661-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WASHIGTNVL PA
2016-01-11 570-721-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYALUSING PA
2016-01-11 570-722-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WHITEHAVEN PA
2016-01-11 570-846-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILKSBARRE PA
2016-01-11 570-857-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALENPAPCK PA
2016-01-11 570-948-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WELLSBORO PA
2016-01-07 570-418-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TIOGA PA
2016-01-07 570-548-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST JOSEPH PA
2016-01-07 570-565-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TAYLOR PA
2016-01-07 570-810-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TAMAQUA PA
2016-01-07 570-917-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUNBURY PA
2016-01-06 570-382-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OLYPHANT PA
2016-01-06 570-569-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PITTSTON PA
2016-01-06 570-671-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHENANDOAH PA
2016-01-06 570-678-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NUANGOLA PA
2016-01-06 570-683-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ORANGEVL PA
2016-01-06 570-968-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ORWIGSBURG PA
2016-01-06 570-987-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NUREMBERG PA
2016-01-05 570-252-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWFOUNDLD PA
2016-01-05 570-277-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWPHLDLPH PA
2016-01-05 570-298-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NOXEN PA
2016-01-05 570-667-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MUHLENBURG PA
2016-01-05 570-747-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MUNCY VLY PA
2016-01-05 570-942-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NICHOLSON PA
2016-01-04 570-201-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RUSH PA
2016-01-04 570-355-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POCONOLAKE PA
2016-01-04 570-884-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SELINSGRV PA
2016-01-04 570-938-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLYMOUTH PA
2016-01-04 570-990-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POTTSVILLE PA
2015-12-31 570-264-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONTGOMERY PA
2015-12-31 570-458-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILLVILLE PA
2015-12-31 570-774-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOOSIC PA
2015-12-31 570-848-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOSCOW PA
2015-12-31 570-984-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MINERSVL PA
2015-12-30 570-478-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOYALSOCK PA
2015-12-30 570-600-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MIDDLEBURG PA
2015-12-30 570-712-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEHOOPANY PA
2015-12-30 570-818-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANTZVILLE PA
2015-12-30 570-929-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCADOO PA
2015-12-30 570-943-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCKEANSBG PA
2015-12-29 570-248-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAWRENCEVL 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.