NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2006-09-18 304-913-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PRINCETON WV
2006-09-15 304-398-4XXX 4000–4999Assigned CSC VOICE, LLC 612K NEWMRTNSVL WV
2006-09-15 304-629-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 CLARKSBURG WV
2006-09-15 304-917-4XXX 4000–4999Assigned CSC VOICE, LLC 612K PRKRSBGZN1 WV
2006-09-14 304-910-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BLUEFIELD WV
2006-09-13 304-893-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2006-09-13 304-893-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2006-09-08 304-205-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHRLSTNZN1 WV
2006-09-08 304-914-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEIRTON WV
2006-09-07 304-760-6XXX 6000–6999Assigned FIBERNET, LLC - WV 4095 SCOTTDEPOT WV
2006-09-07 304-840-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-09-07 304-840-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-09-07 304-840-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-09-07 304-840-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-09-07 304-840-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-09-07 304-914-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WEIRTON WV
2006-09-07 304-914-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WEIRTON WV
2006-09-07 304-993-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-07 304-993-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-09-01 304-647-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WV 6284 LEWISBURG WV
2006-09-01 304-731-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2006-08-30 304-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHELNGZON1 WV
2006-08-30 304-923-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BECKLEY WV
2006-08-25 304-982-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-08-25 304-982-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-08-17 304-915-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHRLSTNZN7 WV
2006-08-16 304-906-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2006-08-15 304-516-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 BUCKHANNON WV
2006-08-15 304-881-6XXX 6000–6999Assigned METROPCS, INC. 5562 CHRLSTNZN1 WV
2006-08-10 304-657-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 FAIRMONT WV
2006-08-07 304-433-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARTINSBG WV
2006-08-07 304-550-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-08-07 304-690-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-07-27 304-336-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON2 WV
2006-07-27 304-690-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2006-07-25 304-820-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 FALLNGWTRS WV
2006-07-21 304-382-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-07-18 304-382-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2006-07-17 304-699-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PRKRSBGZN1 WV
2006-07-13 304-957-0XXX 0000–0999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV
2006-07-13 304-957-1XXX 1000–1999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV
2006-07-13 304-957-2XXX 2000–2999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV
2006-07-13 304-957-3XXX 3000–3999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV
2006-07-13 304-957-4XXX 4000–4999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV
2006-07-13 304-957-5XXX 5000–5999Assigned FRONTIER WEST VIRGINIA INC. 9214 CHRLSTNZN1 WV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.