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
2005-11-22 206-724-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-22 206-724-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-11-10 206-569-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RICHMNDBCH WA
2005-11-10 206-569-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RICHMNDBCH WA
2005-11-08 206-330-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-10-24 206-913-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-10-24 206-913-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-10-24 206-913-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-10-24 206-913-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-10-20 206-330-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-10-03 206-859-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-10-03 206-859-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-10-03 206-859-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-27 206-500-0XXX 0000–0999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-1XXX 1000–1999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-2XXX 2000–2999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-3XXX 3000–3999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-4XXX 4000–4999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-5XXX 5000–5999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-6XXX 6000–6999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-7XXX 7000–7999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-8XXX 8000–8999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-27 206-500-9XXX 9000–9999Assigned QWEST CORPORATION 9638 SEATTLE WA
2005-09-13 206-373-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 206-218-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 206-218-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 206-370-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-18 206-225-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-18 206-225-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-08-17 206-319-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2005-08-17 206-319-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2005-08-17 206-319-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2005-08-03 206-280-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-371-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-371-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-371-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-816-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-816-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-08-03 206-816-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-07-26 206-418-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-07-13 206-829-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2005-07-07 206-288-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 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.