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 253
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
2017-12-21 253-263-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 AUBURN WA
2017-12-11 253-290-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2017-11-21 253-387-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2017-11-21 253-387-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2017-11-13 253-300-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-11-13 253-300-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-11-13 253-300-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-11-13 253-300-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-11-13 253-300-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-11-10 253-287-6XXX 6000–6999Assigned METROPCS, INC. 5562 TACOMA WA
2017-11-10 253-287-7XXX 7000–7999Assigned METROPCS, INC. 5562 TACOMA WA
2017-11-07 253-392-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2017-11-03 253-373-8XXX 8000–8999Assigned ASTOUND BROADBAND, LLC - WA 937F KENT WA
2017-11-02 253-433-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TACOMA WA
2017-10-31 253-733-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2017-10-31 253-733-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2017-10-31 253-733-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2017-10-19 253-766-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KENT WA
2017-10-19 253-766-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E KENT WA
2017-10-17 253-331-6XXX 6000–6999Assigned METROPCS, INC. 5562 TACOMAWVLY WA
2017-10-17 253-754-0XXX 0000–0999Assigned METROPCS, INC. 5562 TACOMAWVLY WA
2017-10-12 253-331-4XXX 4000–4999Assigned HD CARRIER LLC 321J TACOMAWVLY WA
2017-10-12 253-649-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GIG HARBOR WA
2017-10-10 253-331-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2017-10-10 253-509-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2017-10-09 253-409-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2017-10-05 253-331-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMAWVLY WA
2017-10-05 253-904-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PUYALLUP WA
2017-10-05 253-904-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PUYALLUP WA
2017-10-05 253-987-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUMNER WA
2017-10-04 253-375-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRAHAM WA
2017-09-14 253-331-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2017-09-14 253-999-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2017-09-14 253-999-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2017-09-12 253-240-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMA WA
2017-09-12 253-303-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2017-09-12 253-331-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2017-09-12 253-447-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SUMNER WA
2017-09-11 253-215-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E ROY WA
2017-09-11 253-246-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E KENT WA
2017-09-11 253-780-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2017-09-08 253-409-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E AUBURN WA
2017-09-06 253-240-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2017-09-06 253-331-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2017-08-21 253-649-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2017-07-27 253-999-7XXX 7000–7999Assigned METROPCS, INC. 5562 TACOMA WA
2017-07-27 253-999-8XXX 8000–8999Assigned METROPCS, INC. 5562 TACOMA WA
2017-07-14 253-765-4XXX 4000–4999Assigned TELNYX LLC 073H DES MOINES WA
2017-07-13 253-243-0XXX 0000–0999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KENT WA
2017-07-13 253-285-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F AUBURN 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.