NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 206
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 4
ACCELERATE NETWORKS LLC 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
2006-03-10 206-420-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2006-03-07 206-829-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2006-03-07 206-829-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2006-03-03 206-303-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-03-03 206-816-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-02-09 206-302-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-02-09 206-302-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-02-09 206-306-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-02-09 206-306-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-01-25 206-387-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2006-01-20 206-923-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2006-01-18 206-304-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2006-01-18 206-304-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2006-01-15 206-291-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-01-15 206-291-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-01-15 206-922-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2006-01-11 206-291-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-802-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-861-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-861-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-877-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-877-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-902-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-902-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-902-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-941-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2006-01-11 206-965-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-27 206-653-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2005-12-21 206-731-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-21 206-734-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-734-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-734-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-734-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-734-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-883-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-883-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-883-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-21 206-883-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-12-15 206-225-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-15 206-239-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-15 206-267-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-15 206-272-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-15 206-288-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-01 206-734-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-01 206-734-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-12-01 206-734-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-11-22 206-724-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE 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.