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
2019-06-21 360-814-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2019-06-19 360-369-5XXX 5000–5999Assigned CORETEL WASHINGTON, INC. - WA 453J BATTLEGRND WA
2019-06-17 360-488-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E MT VERNON WA
2019-06-10 360-762-2XXX 2000–2999Assigned METROPCS, INC. 5562 LONGVIEW WA
2019-06-06 360-745-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLUDLOW WA
2019-06-05 360-214-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONG BEACH WA
2019-06-05 360-543-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WHATCOMCTY WA
2019-06-05 360-899-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2019-06-05 360-899-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2019-05-29 360-996-1XXX 1000–1999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CHEHALIS WA
2019-05-24 360-506-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2019-05-17 360-506-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CENTRALIA WA
2019-05-17 360-506-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CENTRALIA WA
2019-05-17 360-764-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J OLYMPIA WA
2019-04-29 360-517-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SILVERDALE WA
2019-04-26 360-682-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OAK HARBOR WA
2019-04-26 360-762-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2019-04-26 360-762-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2019-04-15 360-410-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2019-04-15 360-845-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E PORT ORCH WA
2019-04-15 360-845-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E PORT ORCH WA
2019-03-28 360-375-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN JUAN WA
2019-03-20 360-228-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2019-03-20 360-409-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CAMAS WA
2019-03-20 360-968-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SHELTON WA
2019-03-15 360-506-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2019-03-06 360-325-8XXX 8000–8999Assigned TELNYX LLC 073H WHATCOMCTY WA
2019-02-13 360-762-3XXX 3000–3999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F LONGVIEW WA
2019-02-13 360-861-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ELMA WA
2019-02-13 360-967-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CASTLEROCK WA
2019-02-13 360-968-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SHELTON WA
2019-01-29 360-938-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WOODLAND WA
2019-01-23 360-660-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ABERDEEN WA
2019-01-21 360-317-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SAN JUAN WA
2019-01-21 360-317-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SAN JUAN WA
2019-01-17 360-762-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LONGVIEW WA
2019-01-14 360-706-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2019-01-14 360-706-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2019-01-11 360-228-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2019-01-11 360-228-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2019-01-11 360-506-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E CENTRALIA WA
2019-01-11 360-592-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2019-01-11 360-592-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2019-01-11 360-641-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E ASHFORD WA
2019-01-11 360-812-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2019-01-11 360-997-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E BLACKDIMND WA
2019-01-09 360-226-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ENUMCLAW WA
2019-01-09 360-227-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E BELFAIR WA
2019-01-09 360-228-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E BREMERTON WA
2019-01-09 360-228-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E BREMERTON 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.