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
2011-04-04 304-939-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2011-04-04 304-939-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2011-03-29 304-205-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-03-29 304-206-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-03-29 304-741-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-03-24 304-218-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON1 WV
2011-03-24 304-719-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOUNT HOPE WV
2011-03-24 304-905-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2011-03-24 304-917-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2011-03-24 304-926-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-24 304-926-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2011-03-22 304-203-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CLARKSBURG WV
2011-03-22 304-308-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BLUEFIELD WV
2011-03-22 304-376-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MORGANTOWN WV
2011-03-22 304-376-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MORGANTOWN WV
2011-03-22 304-578-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BECKLEY WV
2011-03-22 304-690-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2011-03-22 304-690-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2011-03-21 304-916-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2011-03-18 304-212-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2011-03-17 304-969-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CLARKSBURG WV
2011-03-15 304-381-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - WV 368E MORGANTOWN WV
2011-03-15 304-841-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - WV 368E CLARKSBURG WV
2011-03-15 304-841-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - WV 368E CLARKSBURG WV
2011-03-11 304-554-7XXX 7000–7999Assigned CITYNET WEST VIRGINIA, LLC - WV 545B MORGANTOWN WV
2011-03-11 304-554-8XXX 8000–8999Assigned CITYNET WEST VIRGINIA, LLC - WV 545B MORGANTOWN WV
2011-03-09 304-608-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BRIDGEPORT WV
2011-03-08 304-240-4XXX 4000–4999Assigned METROPCS, INC. 5562 FALLNGWTRS WV
2011-03-08 304-240-5XXX 5000–5999Assigned METROPCS, INC. 5562 FALLNGWTRS WV
2011-03-08 304-240-6XXX 6000–6999Assigned METROPCS, INC. 5562 FALLNGWTRS WV
2011-03-04 304-730-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 HNTNGTNZN1 WV
2011-03-02 304-250-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BECKLEY WV
2011-03-02 304-721-9XXX 9000–9999Assigned CSC VOICE, LLC 612K CHRLSTNZN5 WV
2011-02-28 304-220-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHRLSTNZN4 WV
2011-02-28 304-489-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MINERLWLLS WV
2011-02-25 304-209-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEYSER WV
2011-02-25 304-397-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 HURRICANE WV
2011-02-25 304-780-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHELNGZON1 WV
2011-02-25 304-786-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
2011-02-23 304-206-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-02-23 304-206-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2011-02-22 304-593-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PTPLEASANT WV
2011-02-22 304-919-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 WEIRTON WV
2011-02-17 304-679-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN2 WV
2011-02-11 304-520-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISBURG WV
2011-02-11 304-703-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOOREFIELD WV
2011-02-08 304-215-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WHELNGZON1 WV
2011-02-07 304-445-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 ALDERSON WV
2011-02-07 304-578-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BECKLEY WV
2011-02-07 304-730-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 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.