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
2022-10-11 253-340-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KENT WA
2022-10-11 253-340-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E KENT WA
2022-10-03 253-402-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-10-03 253-402-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-10-03 253-402-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-10-03 253-402-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-09-30 253-308-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-09-22 253-327-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E TACOMA WA
2022-09-22 253-354-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E TACOMA WA
2022-09-22 253-354-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TACOMA WA
2022-09-15 253-308-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-09-15 253-308-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-09-15 253-308-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-09-15 253-308-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-09-02 253-434-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F PUYALLUP WA
2022-09-01 253-453-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2022-09-01 253-453-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2022-09-01 253-453-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2022-09-01 253-453-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2022-09-01 253-453-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2022-08-30 253-434-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2022-08-30 253-434-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2022-08-30 253-434-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2022-08-30 253-434-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2022-08-30 253-434-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2022-08-24 253-308-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E AUBURN WA
2022-08-24 253-308-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E AUBURN WA
2022-08-24 253-340-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E KENT WA
2022-08-24 253-364-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SUMNER WA
2022-08-24 253-364-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SUMNER WA
2022-08-24 253-400-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2022-08-24 253-465-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E ROY WA
2022-08-24 253-525-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2022-08-24 253-785-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2022-08-24 253-785-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2022-08-17 253-354-9XXX 9000–9999Assigned TELNYX LLC 073H TACOMA WA
2022-08-12 253-231-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2022-08-12 253-231-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2022-08-12 253-247-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-08-12 253-247-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-08-12 253-308-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-08-12 253-339-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2022-08-12 253-345-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2022-08-06 253-354-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMA WA
2022-08-06 253-354-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TACOMA WA
2022-08-06 253-367-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2022-07-21 253-400-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2022-07-19 253-364-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUMNER WA
2022-06-22 253-340-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENT WA
2022-05-27 253-247-8XXX 8000–8999Assigned 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.