NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 360
EXIANT COMMUNICATIONS LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 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
2014-03-06 360-932-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2014-02-27 360-922-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 WHATCOMCTY WA
2014-02-14 360-298-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SAN JUAN WA
2014-02-14 360-523-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CENTRALIA WA
2014-02-11 360-674-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2014-01-28 360-952-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2014-01-27 360-890-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2014-01-22 360-857-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RIDGEFIELD WA
2014-01-17 360-813-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2014-01-17 360-967-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CASTLEROCK WA
2014-01-14 360-488-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2013-12-17 360-409-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E CAMAS WA
2013-12-17 360-507-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2013-12-17 360-914-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E OAK HARBOR WA
2013-12-16 360-526-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WHATCOMCTY WA
2013-12-13 360-310-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ABERDEEN WA
2013-12-13 360-353-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2013-12-13 360-682-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OAK HARBOR WA
2013-12-13 360-899-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MT VERNON WA
2013-12-13 360-972-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2013-12-13 360-972-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2013-12-13 360-984-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2013-12-13 360-984-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2013-12-04 360-964-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MONTESANO WA
2013-11-27 360-288-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 LKQUINAULT WA
2013-11-27 360-327-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FORKS WA
2013-11-27 360-638-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KINGSTON WA
2013-11-27 360-732-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHIMACMCTR WA
2013-11-27 360-796-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOOD CANAL WA
2013-11-26 360-208-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SOUTH BEND WA
2013-11-26 360-245-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CURTIS WA
2013-11-26 360-276-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PACIFICBCH WA
2013-11-26 360-381-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PTTOWNSEND WA
2013-11-26 360-467-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNOHOMISH WA
2013-11-26 360-472-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAN JUAN WA
2013-11-26 360-492-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MORTON WA
2013-11-26 360-495-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELMA WA
2013-11-26 360-499-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OAK HARBOR WA
2013-11-26 360-549-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHELTON WA
2013-11-26 360-569-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHFORD WA
2013-11-26 360-648-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OCOSTA WA
2013-11-26 360-872-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ORTING WA
2013-11-26 360-889-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SO PRAIRIE WA
2013-11-26 360-964-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MONTESANO WA
2013-11-26 360-965-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARYSVILLE WA
2013-11-25 360-830-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2013-11-22 360-261-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F LONGVIEW WA
2013-11-21 360-680-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOOD CANAL WA
2013-11-20 360-409-5XXX 5000–5999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 CAMAS WA
2013-11-20 360-488-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA

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.