NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 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
2011-08-23 509-769-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLARKSTON WA
2011-08-22 509-808-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2011-08-12 509-863-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2011-08-11 509-321-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2011-08-11 509-340-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2011-08-05 509-686-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BRIDGEPORT WA
2011-08-05 509-731-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2011-08-03 509-572-6XXX 6000–6999Assigned METROPCS, INC. 5562 KENNEWICK WA
2011-07-22 509-245-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SPANGLE WA
2011-07-22 509-257-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2011-07-22 509-341-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TWISP WA
2011-07-22 509-399-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E STARBUCK WA
2011-07-22 509-646-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WASHTUCNA WA
2011-07-22 509-673-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E TIETON WA
2011-07-15 509-428-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E RITZVILLE WA
2011-07-15 509-672-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E RIMROCK WA
2011-07-15 509-796-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E REARDAN WA
2011-07-15 509-982-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E ODESSA WA
2011-07-12 509-828-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2011-07-06 509-253-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E HARRINGTON WA
2011-07-06 509-265-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E CONNELL WA
2011-07-06 509-266-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E MATHEWSCOR WA
2011-07-06 509-269-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E CONNELL WA
2011-07-06 509-282-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E CONNELL WA
2011-07-06 509-297-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E MATHEWSCOR WA
2011-07-06 509-636-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E CRESTON WA
2011-07-06 509-722-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E CHEWELAH WA
2011-07-06 509-749-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E EUREKA WA
2011-07-06 509-936-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E CHEWELAH WA
2011-07-06 509-978-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E NESPELEM WA
2011-06-30 509-449-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BRIDGEPORT WA
2011-06-24 509-515-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2011-06-22 509-293-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WENATCHEE WA
2011-06-20 509-899-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2011-06-09 509-232-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2011-06-09 509-251-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2011-06-09 509-270-4XXX 4000–4999Assigned METROPCS, INC. 5562 SPOKANE WA
2011-06-09 509-279-1XXX 1000–1999Assigned METROPCS, INC. 5562 SPOKANE WA
2011-06-09 509-302-4XXX 4000–4999Assigned METROPCS, INC. 5562 PASCO WA
2011-06-09 509-572-4XXX 4000–4999Assigned METROPCS, INC. 5562 KENNEWICK WA
2011-06-09 509-759-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2011-06-09 509-759-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2011-06-09 509-828-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2011-06-09 509-828-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2011-06-07 509-828-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2011-06-06 509-306-2XXX 2000–2999Assigned METROPCS, INC. 5562 ELLENSBURG WA
2011-06-03 509-774-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WH SALMON WA
2011-05-27 509-677-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E LIND WA
2011-05-26 509-387-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2011-05-24 509-415-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WENATCHEE 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.