NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 509
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 3
NEW CINGULAR WIRELESS PCS, LLC 2
EXIANT COMMUNICATIONS LLC 2
LEVEL 3 COMMUNICATIONS, LLC - 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
2025-04-08 509-250-9XXX 9000–9999Assigned METROPCS, INC. 5562 GOLDENDALE WA
2025-04-08 509-310-1XXX 1000–1999Assigned METROPCS, INC. 5562 WH SALMON WA
2025-04-07 509-242-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2025-04-07 509-437-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2025-04-07 509-656-8XXX 8000–8999Assigned METROPCS, INC. 5562 CLE ELUM WA
2025-04-07 509-906-5XXX 5000–5999Assigned METROPCS, INC. 5562 EPHRATA WA
2025-03-28 509-938-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2025-03-24 509-705-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2025-03-21 509-403-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 QUINCY WA
2025-03-07 509-705-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2025-03-07 509-705-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2025-03-07 509-705-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2025-02-28 509-704-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2025-02-28 509-704-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2025-02-10 509-300-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2025-02-10 509-300-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2025-02-10 509-507-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2025-02-10 509-507-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2025-02-07 509-502-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SUNNYSIDE WA
2025-02-07 509-653-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NACHES WA
2025-02-07 509-673-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TIETON WA
2025-02-07 509-678-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K COWICHE WA
2025-01-24 509-298-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MOSES LAKE WA
2025-01-17 509-614-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2025-01-14 509-614-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2025-01-14 509-938-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2025-01-14 509-938-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2025-01-07 509-541-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-541-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-723-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-748-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DALLESPORT WA
2025-01-07 509-799-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-799-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-799-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-799-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2025-01-07 509-918-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2024-12-30 509-404-5XXX 5000–5999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F DAYTON WA
2024-12-30 509-419-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2024-12-26 509-214-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F NEWMANLAKE WA
2024-12-26 509-215-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DAVENPORT WA
2024-12-26 509-917-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F REARDAN WA
2024-12-23 509-402-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRANDVIEW WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.