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
2015-06-17 206-900-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2015-06-12 206-693-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2015-06-12 206-693-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2015-06-12 206-800-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E RICHMNDBCH WA
2015-06-08 206-739-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2015-06-04 206-739-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-05-29 206-379-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-05-29 206-379-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-05-29 206-379-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-05-29 206-566-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-05-28 206-966-0XXX 0000–0999Assigned METROPCS, INC. 5562 DES MOINES WA
2015-05-27 206-822-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BAINBDG IS WA
2015-05-08 206-567-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E VASHON WA
2015-04-06 206-800-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F RICHMNDBCH WA
2015-03-12 206-822-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-03-12 206-822-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-03-12 206-822-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-03-11 206-566-1XXX 1000–1999Assigned METROPCS, INC. 5562 SEATTLE WA
2015-03-11 206-566-2XXX 2000–2999Assigned METROPCS, INC. 5562 SEATTLE WA
2015-03-05 206-566-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-03-05 206-693-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 SEATTLE WA
2015-02-10 206-488-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2015-01-23 206-800-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J RICHMNDBCH WA
2015-01-12 206-693-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-12-19 206-319-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAINBDG IS WA
2014-12-04 206-966-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2014-12-04 206-966-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2014-12-02 206-566-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2014-11-21 206-566-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-10-28 206-319-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BAINBDG IS WA
2014-10-28 206-693-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SEATTLE WA
2014-10-27 206-739-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2014-10-27 206-739-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2014-10-27 206-739-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2014-10-27 206-739-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2014-10-16 206-201-0XXX 0000–0999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BAINBDG IS WA
2014-10-15 206-566-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-15 206-566-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-14 206-249-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2014-10-14 206-476-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2014-10-10 206-379-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-10 206-476-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-10 206-476-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-10 206-476-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-10 206-476-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2014-10-10 206-488-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2014-10-10 206-488-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2014-10-10 206-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2014-10-10 206-488-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2014-10-10 206-488-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS 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.