NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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
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
2019-01-14 509-906-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2019-01-14 509-906-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2019-01-14 509-906-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2019-01-14 509-906-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2019-01-09 509-612-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E KETTLE FLS WA
2019-01-09 509-907-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2019-01-07 509-213-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2019-01-07 509-739-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E ALMIRA WA
2019-01-07 509-873-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KENNEWICK WA
2019-01-07 509-873-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E KENNEWICK WA
2019-01-07 509-873-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E KENNEWICK WA
2018-12-31 509-530-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2018-12-21 509-530-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-12-21 509-530-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-12-21 509-530-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-12-21 509-866-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-12-21 509-867-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-12-20 509-772-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 GOLDENDALE WA
2018-11-30 509-640-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F COLVILLE WA
2018-11-28 509-567-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F PASCO WA
2018-11-06 509-530-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-11-06 509-530-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-11-06 509-530-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-11-06 509-530-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-11-06 509-530-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-10-24 509-873-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KENNEWICK WA
2018-10-19 509-873-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2018-10-18 509-596-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLARKSTON WA
2018-10-18 509-790-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SUNNYSIDE WA
2018-10-16 509-361-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F MOSES LAKE WA
2018-10-16 509-852-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CLE ELUM WA
2018-10-16 509-867-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2018-10-02 509-715-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PULLMAN WA
2018-10-01 509-550-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NEWPORT WA
2018-09-28 509-312-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2018-09-24 509-557-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OMAK WA
2018-09-24 509-867-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2018-09-21 509-558-9XXX 9000–9999Assigned METROPCS, INC. 5562 SPOKANE WA
2018-09-21 509-761-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MOSES LAKE WA
2018-09-14 509-866-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2018-09-05 509-895-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K YAKIMA WA
2018-08-23 509-867-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SPOKANE WA
2018-08-22 509-644-2XXX 2000–2999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F LOON LAKE WA
2018-08-22 509-827-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 RICHLAND WA
2018-08-22 509-827-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 RICHLAND WA
2018-08-21 509-715-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PULLMAN WA
2018-07-31 509-384-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ROOSEVELT WA
2018-07-20 509-400-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WA 6270 MATTAWA WA
2018-07-19 509-391-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2018-07-18 509-867-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE 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.