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 425
NEW CINGULAR WIRELESS PCS, 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
2014-01-29 425-629-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2014-01-28 425-276-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E RENTON WA
2014-01-23 425-324-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2014-01-17 425-324-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2014-01-14 425-551-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2013-12-27 425-757-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RENTON WA
2013-12-23 425-948-9XXX 9000–9999Assigned METROPCS, INC. 5562 SILVERLAKE WA
2013-12-19 425-602-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2013-12-17 425-880-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E AMES LAKE WA
2013-12-13 425-261-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2013-12-13 425-324-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2013-12-13 425-324-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2013-12-13 425-349-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2013-12-13 425-563-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2013-12-13 425-892-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2013-12-13 425-947-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2013-12-13 425-984-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2013-12-05 425-435-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-12-05 425-435-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-11-27 425-406-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KIRKLAND WA
2013-11-27 425-441-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FALL CITY WA
2013-11-27 425-471-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOTHELL WA
2013-11-27 425-697-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HALLS LAKE WA
2013-11-26 425-363-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NORTH BEND WA
2013-11-26 425-434-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNOQUMPASS WA
2013-11-26 425-549-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARNATION WA
2013-11-26 425-880-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMES LAKE WA
2013-11-11 425-320-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2013-11-11 425-951-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2013-11-06 425-610-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EVERETT WA
2013-11-05 425-435-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-11-05 425-435-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-10-29 425-209-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2013-10-28 425-209-1XXX 1000–1999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BELLEVUE WA
2013-10-28 425-947-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KIRKLAND WA
2013-10-18 425-406-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KIRKLAND WA
2013-10-17 425-531-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2013-10-17 425-531-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2013-10-17 425-954-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2013-10-15 425-209-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2013-10-15 425-276-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2013-10-15 425-358-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MAPLE VLY WA
2013-10-10 425-405-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
2013-10-10 425-435-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-10-10 425-954-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 HALLS LAKE WA
2013-10-07 425-250-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2013-10-07 425-295-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2013-09-25 425-836-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2013-09-13 425-209-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2013-09-13 425-245-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE 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.