NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2021-09-13 253-544-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PUYALLUP WA
2021-09-13 253-544-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H PUYALLUP WA
2021-09-13 253-544-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H PUYALLUP WA
2021-09-01 253-275-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J AUBURN WA
2021-09-01 253-465-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J ROY WA
2021-09-01 253-796-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J KENT WA
2021-08-31 253-367-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRAHAM WA
2021-08-30 253-342-0XXX 0000–0999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TACOMA WA
2021-08-25 253-676-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J TACOMAWVLY WA
2021-08-19 253-275-5XXX 5000–5999Assigned TELNYX LLC 073H AUBURN WA
2021-08-19 253-500-0XXX 0000–0999Assigned FRACTEL, LLC 965H TACOMAWVLY WA
2021-08-19 253-500-5XXX 5000–5999Assigned FRACTEL, LLC 965H TACOMAWVLY WA
2021-08-12 253-345-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-08-12 253-523-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-08-12 253-523-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-08-03 253-600-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-08-03 253-600-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-08-03 253-600-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-08-03 253-600-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-08-03 253-600-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-07-30 253-356-0XXX 0000–0999Assigned COMMIO, LLC 939H TACOMA WA
2021-07-30 253-356-1XXX 1000–1999Assigned COMMIO, LLC 939H TACOMA WA
2021-07-30 253-356-2XXX 2000–2999Assigned COMMIO, LLC 939H TACOMA WA
2021-07-30 253-356-3XXX 3000–3999Assigned COMMIO, LLC 939H TACOMA WA
2021-07-30 253-356-4XXX 4000–4999Assigned COMMIO, LLC 939H TACOMA WA
2021-06-16 253-339-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-06-16 253-339-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-06-07 253-357-0XXX 0000–0999Assigned TELNYX LLC 073H TACOMA WA
2021-06-07 253-766-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J KENT WA
2021-05-27 253-210-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2021-05-27 253-210-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2021-05-27 253-210-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2021-05-27 253-264-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SUMNER WA
2021-05-27 253-264-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SUMNER WA
2021-05-27 253-264-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SUMNER WA
2021-05-27 253-356-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TACOMA WA
2021-05-27 253-356-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E TACOMA WA
2021-05-27 253-356-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E TACOMA WA
2021-05-27 253-356-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TACOMA WA
2021-05-27 253-361-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2021-05-27 253-361-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2021-05-27 253-361-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2021-05-27 253-361-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2021-05-27 253-400-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2021-05-27 253-400-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2021-05-27 253-400-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2021-05-27 253-400-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2021-05-27 253-465-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E ROY WA
2021-05-27 253-465-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E ROY WA
2021-05-27 253-528-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E DES MOINES WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.