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
2004-04-29 253-592-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-21 253-486-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-04-21 253-486-9XXX 9000–9999Assigned METROPCS, INC. 5562 AUBURN WA
2004-04-21 253-576-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-21 253-961-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-20 253-273-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-20 253-273-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-20 253-273-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-14 253-861-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-14 253-861-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-06 253-217-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-04-06 253-217-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-04-06 253-273-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-04-06 253-273-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-03-29 253-217-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-03-29 253-961-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-03-08 253-217-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-03-05 253-273-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2004-02-20 253-200-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 PUYALLUP WA
2004-02-20 253-299-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 SUMNER WA
2004-02-20 253-344-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 TACOMAWVLY WA
2004-01-13 253-214-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 DES MOINES WA
2004-01-13 253-218-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 AUBURN WA
2004-01-13 253-447-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SUMNER WA
2004-01-13 253-478-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KENT WA
2004-01-05 253-217-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2004-01-05 253-273-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2003-12-30 253-237-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DES MOINES WA
2003-12-30 253-470-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SUMNER WA
2003-12-16 253-255-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2003-11-18 253-345-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J TACOMAWVLY WA
2003-10-28 253-250-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2003-10-28 253-250-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2003-10-28 253-617-6XXX 6000–6999Assigned QWEST CORPORATION 9638 TACOMA WA
2003-10-21 253-797-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2003-10-21 253-797-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2003-10-21 253-797-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2003-10-20 253-447-4XXX 4000–4999Assigned QWEST CORPORATION 9638 SUMNER WA
2003-10-14 253-255-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2003-08-04 253-250-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TACOMAWVLY WA
2003-08-04 253-299-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SUMNER WA
2003-05-27 253-205-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN WA
2003-05-27 253-205-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN WA
2003-04-10 253-446-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 PUYALLUP WA
2003-04-10 253-697-1XXX 1000–1999Assigned QWEST CORPORATION 9638 PUYALLUP WA
2003-03-26 253-217-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 AUBURN WA
2003-03-26 253-604-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PUYALLUP WA
2003-03-25 253-697-2XXX 2000–2999Assigned QWEST CORPORATION 9638 PUYALLUP WA
2003-03-25 253-697-3XXX 3000–3999Assigned QWEST CORPORATION 9638 PUYALLUP WA
2003-03-25 253-697-4XXX 4000–4999Assigned QWEST CORPORATION 9638 PUYALLUP 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.