NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
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
2014-07-03 509-367-9XXX 9000–9999Assigned METROPCS, INC. 5562 YAKIMA WA
2014-07-03 509-733-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BREWSTER WA
2014-07-01 509-792-5XXX 5000–5999Assigned METROPCS, INC. 5562 PASCO WA
2014-07-01 509-792-6XXX 6000–6999Assigned METROPCS, INC. 5562 PASCO WA
2014-07-01 509-792-7XXX 7000–7999Assigned METROPCS, INC. 5562 PASCO WA
2014-07-01 509-792-8XXX 8000–8999Assigned METROPCS, INC. 5562 PASCO WA
2014-07-01 509-792-9XXX 9000–9999Assigned METROPCS, INC. 5562 PASCO WA
2014-07-01 509-956-0XXX 0000–0999Assigned METROPCS, INC. 5562 WALLAWALLA WA
2014-07-01 509-956-1XXX 1000–1999Assigned METROPCS, INC. 5562 WALLAWALLA WA
2014-07-01 509-956-2XXX 2000–2999Assigned METROPCS, INC. 5562 WALLAWALLA WA
2014-06-26 509-571-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2014-06-24 509-319-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2014-06-23 509-319-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SPOKANE WA
2014-06-20 509-309-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2014-06-18 509-497-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E BENTONCITY WA
2014-06-18 509-515-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SUNNYSIDE WA
2014-06-17 509-309-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2014-06-17 509-309-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2014-06-10 509-767-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DALLESPORT WA
2014-05-16 509-629-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WALLAWALLA WA
2014-05-13 509-571-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2014-05-12 509-671-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 NEWPORT WA
2014-04-24 509-929-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2014-04-11 509-310-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WH SALMON WA
2014-04-11 509-370-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2014-04-11 509-571-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2014-04-11 509-842-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2014-03-10 509-571-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2014-03-10 509-740-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OMAK WA
2014-03-06 509-319-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2014-03-05 509-309-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2014-03-05 509-309-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2014-03-03 509-919-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2014-02-25 509-212-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2014-02-24 509-571-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2014-02-21 509-854-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GRANGER WA
2014-02-17 509-566-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 POMEROY WA
2014-02-17 509-829-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TOPPENISH WA
2014-02-14 509-221-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2014-02-11 509-201-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2014-02-11 509-415-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2014-02-11 509-578-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RICHLAND WA
2014-02-05 509-675-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2014-01-29 509-470-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WENATCHEE WA
2014-01-29 509-476-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OROVILLE WA
2014-01-29 509-792-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PASCO WA
2014-01-24 509-221-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KENNEWICK WA
2014-01-24 509-656-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CLE ELUM WA
2014-01-21 509-919-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2013-12-31 509-571-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K YAKIMA WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.