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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2022-05-27 253-340-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KENT WA
2022-05-27 253-367-1XXX 1000–1999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F GRAHAM WA
2022-05-24 253-247-4XXX 4000–4999Assigned TELNYX LLC 073H AUBURN WA
2022-04-25 253-676-4XXX 4000–4999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TACOMAWVLY WA
2022-04-15 253-247-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-04-15 253-247-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-04-15 253-247-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-04-15 253-247-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-04-15 253-247-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-04-15 253-247-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-03-28 253-316-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H TACOMAWVLY WA
2022-03-28 253-500-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H TACOMAWVLY WA
2022-03-25 253-364-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUMNER WA
2022-03-22 253-340-0XXX 0000–0999Assigned METROPCS, INC. 5562 KENT WA
2022-03-22 253-340-9XXX 9000–9999Assigned METROPCS, INC. 5562 KENT WA
2022-03-21 253-321-2XXX 2000–2999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SUMNER WA
2022-03-21 253-683-5XXX 5000–5999Assigned METROPCS, INC. 5562 TACOMA WA
2022-03-21 253-683-6XXX 6000–6999Assigned METROPCS, INC. 5562 TACOMA WA
2022-03-21 253-733-6XXX 6000–6999Assigned METROPCS, INC. 5562 DES MOINES WA
2022-03-21 253-765-6XXX 6000–6999Assigned METROPCS, INC. 5562 DES MOINES WA
2022-03-12 253-349-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-02-25 253-500-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2022-02-25 253-500-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2022-02-14 253-354-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2022-02-02 253-766-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENT WA
2022-01-26 253-349-2XXX 2000–2999Assigned TELNYX LLC 073H AUBURN WA
2022-01-26 253-500-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H TACOMAWVLY WA
2022-01-26 253-500-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H TACOMAWVLY WA
2022-01-25 253-367-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRAHAM WA
2022-01-25 253-843-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ROY WA
2022-01-21 253-367-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2022-01-21 253-367-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2022-01-16 253-900-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2022-01-15 253-676-5XXX 5000–5999Assigned METROPCS, INC. 5562 TACOMAWVLY WA
2022-01-15 253-676-7XXX 7000–7999Assigned METROPCS, INC. 5562 TACOMAWVLY WA
2022-01-15 253-676-8XXX 8000–8999Assigned METROPCS, INC. 5562 TACOMAWVLY WA
2022-01-13 253-349-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-01-13 253-349-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2022-01-07 253-349-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-357-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TACOMA WA
2022-01-06 253-553-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-06 253-553-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2021-12-09 253-676-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-12-09 253-676-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2021-12-09 253-676-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY 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.