NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 570
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7
ONVOY, LLC - 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
2016-03-15 570-600-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 MIDDLEBURG PA
2016-03-15 570-931-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
2016-03-03 570-846-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WILKSBARRE PA
2016-03-03 570-921-0XXX 0000–0999Assigned METROPCS, INC. 5562 SCRANTON PA
2016-03-03 570-921-2XXX 2000–2999Assigned METROPCS, INC. 5562 SCRANTON PA
2016-02-25 570-600-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLEBURG PA
2016-02-23 570-841-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 SHICKSHINY PA
2016-02-22 570-319-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 CLARKSSMMT PA
2016-02-22 570-324-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LIBERTY PA
2016-02-22 570-353-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MORRIS PA
2016-02-22 570-355-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 POCONOLAKE PA
2016-02-22 570-359-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 CNYNGHDRMS PA
2016-02-22 570-410-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARDING PA
2016-02-22 570-485-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 TOWANDA PA
2016-02-22 570-583-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PORTLAND PA
2016-02-18 570-310-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 DALLAS PA
2016-02-04 570-359-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CNYNGHDRMS PA
2016-02-04 570-800-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SCRANTON PA
2016-01-29 570-413-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JIM THORPE PA
2016-01-21 570-927-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOCK HAVEN PA
2016-01-11 570-216-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT POCONO 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
2016-01-11 570-664-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STROUDSBG 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
2016-01-11 570-990-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSVILLE 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
2016-01-06 570-915-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PINE GROVE 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
2016-01-05 570-917-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 SUNBURY 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.