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
2020-03-31 253-337-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2020-03-31 253-693-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PUYALLUP WA
2020-03-31 253-693-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PUYALLUP WA
2020-03-25 253-316-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TACOMAWVLY WA
2020-03-18 253-316-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-03-12 253-294-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2020-03-12 253-294-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2020-03-12 253-409-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2020-03-05 253-317-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TACOMA WA
2020-02-24 253-210-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GRAHAM WA
2020-02-17 253-693-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PUYALLUP WA
2020-02-05 253-656-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KENT WA
2020-01-16 253-281-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2020-01-16 253-387-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2020-01-16 253-525-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E GIG HARBOR WA
2020-01-16 253-638-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E KENT WA
2020-01-16 253-638-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E KENT WA
2020-01-14 253-317-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2020-01-09 253-281-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-01-09 253-800-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2019-12-26 253-800-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TACOMA WA
2019-12-20 253-393-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2019-12-20 253-393-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2019-12-20 253-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2019-12-17 253-294-7XXX 7000–7999Assigned TELNYX LLC 073H AUBURN WA
2019-11-22 253-262-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRAHAM WA
2019-11-08 253-800-2XXX 2000–2999Assigned RAINIER CONNECT, INC. - WA 7720 TACOMA WA
2019-10-31 253-264-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUMNER WA
2019-10-30 253-281-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-30 253-281-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2019-10-23 253-409-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2019-10-10 253-325-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2019-10-03 253-393-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2019-08-29 253-294-9XXX 9000–9999Assigned TELNYX LLC 073H AUBURN WA
2019-08-28 253-398-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KENT WA
2019-08-22 253-525-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2019-08-13 253-993-3XXX 3000–3999Assigned HD CARRIER LLC 321J TACOMAWVLY WA
2019-08-09 253-393-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2019-08-09 253-393-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2019-08-09 253-393-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2019-08-06 253-294-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2019-08-06 253-294-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2019-06-21 253-325-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2019-06-21 253-525-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E GIG HARBOR 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.