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
Clear Download CSV ↓
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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.