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
2017-04-10 570-657-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JIM THORPE PA
2017-04-10 570-678-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NUANGOLA PA
2017-04-10 570-705-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 RINGTOWN PA
2017-04-05 570-217-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MIFFLINBG PA
2017-04-05 570-246-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MILTON PA
2017-04-05 570-276-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 GIRARDVL PA
2017-04-05 570-277-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NEWPHLDLPH PA
2017-04-05 570-356-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CATAWISSA PA
2017-04-05 570-403-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MOUNTANTOP PA
2017-04-05 570-526-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 FREELAND PA
2017-04-05 570-554-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MT CARMEL PA
2017-04-05 570-799-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NUMIDIA PA
2017-04-05 570-929-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MCADOO PA
2017-04-05 570-968-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ORWIGSBURG PA
2017-03-29 570-293-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 DANVILLE PA
2017-03-29 570-989-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MILTON PA
2017-03-27 570-535-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HAZLETON PA
2017-03-27 570-535-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HAZLETON PA
2017-03-09 570-936-9XXX 9000–9999Assigned METROPCS, INC. 5562 CARBONDALE PA
2017-03-07 570-418-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 TIOGA PA
2017-03-07 570-867-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SAYRE PA
2017-03-01 570-303-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 THOMPSON PA
2017-03-01 570-305-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 JACKSON PA
2017-03-01 570-528-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARFORD PA
2017-03-01 570-566-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PLEASANTMT PA
2017-03-01 570-681-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 UNION DALE PA
2017-03-01 570-782-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NEWMILFORD PA
2017-03-01 570-783-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 MAHANOY CY PA
2017-03-01 570-806-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CLIFFORD PA
2017-03-01 570-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 FORESTCITY PA
2017-02-13 570-989-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 MILTON PA
2017-02-03 570-231-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 BERWICK PA
2017-01-31 570-618-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MILFORD PA
2017-01-17 570-775-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F LORDS VLY PA
2016-12-19 570-800-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SCRANTON PA
2016-12-07 570-217-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MIFFLINBG PA
2016-12-06 570-921-3XXX 3000–3999Assigned METROPCS, INC. 5562 SCRANTON PA
2016-12-06 570-921-5XXX 5000–5999Assigned METROPCS, INC. 5562 SCRANTON PA
2016-12-02 570-661-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 WASHIGTNVL PA
2016-11-30 570-535-5XXX 5000–5999Assigned METROPCS, INC. 5562 HAZLETON PA
2016-11-09 570-801-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SAYLORSBG PA
2016-11-09 570-891-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PITTSTON PA
2016-11-09 570-902-8XXX 8000–8999Assigned METROPCS, INC. 5562 NANTICOKE PA
2016-11-07 570-927-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 LOCK HAVEN PA
2016-10-07 570-254-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 CHAPMAN LK PA
2016-10-07 570-848-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 MOSCOW PA
2016-09-27 570-382-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 OLYPHANT PA
2016-09-26 570-536-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CARBONDALE PA
2016-09-23 570-433-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 LOYALSOCK PA
2016-09-21 570-339-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT CARMEL 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.