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
2007-05-03 253-282-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-05-03 253-282-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-05-03 253-282-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-05-03 253-282-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-05-03 253-282-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-05-03 253-292-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J TACOMA WA
2007-05-02 253-886-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-04-26 253-314-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-04-26 253-314-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-04-20 253-314-0XXX 0000–0999Assigned RAINIER CONNECT, INC. - WA 7720 TACOMA WA
2007-04-13 253-886-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-03-30 253-306-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-22 253-271-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 GRAHAM WA
2007-03-14 253-314-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-14 253-314-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-14 253-314-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-14 253-314-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-14 253-314-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-14 253-886-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-03-14 253-886-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-03-12 253-375-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2007-03-08 253-306-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-08 253-306-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-08 253-306-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-08 253-306-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-06 253-301-5XXX 5000–5999Assigned QWEST CORPORATION 9638 TACOMA WA
2007-03-06 253-301-6XXX 6000–6999Assigned QWEST CORPORATION 9638 TACOMA WA
2007-03-01 253-981-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J KENT WA
2007-03-01 253-981-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J KENT WA
2007-02-27 253-876-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-02-27 253-876-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-02-22 253-733-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 DES MOINES WA
2007-02-21 253-880-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-02-14 253-737-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-02-12 253-301-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-02-01 253-306-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-02-01 253-306-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-02-01 253-306-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-02-01 253-306-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-02-01 253-306-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-02-01 253-886-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2007-01-25 253-320-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-01-25 253-320-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2007-01-24 253-509-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2007-01-23 253-269-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN WA
2007-01-23 253-880-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2007-01-23 253-880-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2007-01-05 253-517-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TACOMAWVLY WA
2007-01-05 253-517-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TACOMAWVLY WA
2007-01-05 253-517-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J 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.