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 304
T-MOBILE USA, INC. 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 1
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
2012-03-05 304-405-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F WEST UNION WV
2012-03-05 304-508-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F MANNINGTON WV
2012-03-05 304-583-1XXX 1000–1999Assigned CSC VOICE, LLC 612K MAN WV
2012-02-29 304-401-7XXX 7000–7999Assigned LUMOS NETWORKS INC. - VA 7849 SISTERSVL WV
2012-02-28 304-435-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHEAT LAKE WV
2012-02-23 304-459-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 CHESTER WV
2012-02-14 304-975-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WHELNGZON2 WV
2012-02-10 304-303-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIDGELEY WV
2012-02-01 304-406-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WESTON WV
2012-01-20 304-804-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F GLENVILLE WV
2012-01-11 304-568-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F TUNNELTON WV
2012-01-10 304-355-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F PIEDMONT WV
2012-01-10 304-877-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOUNT HOPE WV
2012-01-09 304-774-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F HELEN WV
2012-01-06 304-209-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KEYSER WV
2012-01-06 304-240-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FALLNGWTRS WV
2012-01-06 304-846-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WV 6284 RICHWOOD WV
2012-01-05 304-658-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WV 6284 ANSTED WV
2012-01-04 304-658-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F ANSTED WV
2011-12-28 304-446-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F ELK GARDEN WV
2011-12-27 304-400-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-12-19 304-202-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F PINEVILLE WV
2011-12-19 304-441-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F KINGWOOD WV
2011-12-14 304-223-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F FLAT TOP WV
2011-12-14 304-400-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHRLSTNZN1 WV
2011-12-14 304-491-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WEIRTON WV
2011-12-14 304-975-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WHELNGZON2 WV
2011-12-12 304-992-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISBURG WV
2011-12-08 304-381-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MORGANTOWN WV
2011-12-06 304-557-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRINCETON WV
2011-12-06 304-719-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F MOUNT HOPE WV
2011-11-29 304-303-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F RIDGELEY WV
2011-11-23 304-896-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2011-11-23 304-900-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FAYETTEVL WV
2011-11-21 304-362-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2011-11-21 304-362-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2011-11-21 304-362-3XXX 3000–3999Assigned METROPCS, INC. 5562 BECKLEY WV
2011-11-21 304-398-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWMRTNSVL WV
2011-11-16 304-901-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARTINSBG WV
2011-11-15 304-709-8XXX 8000–8999Assigned METROPCS, INC. 5562 CLARKSBURG WV
2011-11-15 304-709-9XXX 9000–9999Assigned METROPCS, INC. 5562 CLARKSBURG WV
2011-11-11 304-921-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BLUEFIELD WV
2011-11-07 304-786-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
2011-11-07 304-871-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WEST UNION WV
2011-10-17 304-871-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WEST UNION WV
2011-10-12 304-679-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN2 WV
2011-10-11 304-579-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARTINSBG WV
2011-10-11 304-761-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
2011-10-10 304-747-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-10-05 304-953-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOGAN WV

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.