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
2018-06-11 304-220-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN4 WV
2018-06-11 304-453-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN4 WV
2018-06-11 304-453-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN4 WV
2018-06-11 304-915-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN7 WV
2018-06-11 304-915-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN7 WV
2018-06-11 304-915-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN7 WV
2018-06-11 304-945-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN5 WV
2018-06-11 304-945-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN5 WV
2018-06-11 304-965-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN3 WV
2018-06-11 304-988-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN2 WV
2018-06-08 304-973-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BELMONT WV
2018-06-07 304-974-3XXX 3000–3999Assigned CITYNET WEST VIRGINIA, LLC - WV 545B MORGANTOWN WV
2018-06-07 304-974-4XXX 4000–4999Assigned CITYNET WEST VIRGINIA, LLC - WV 545B MORGANTOWN WV
2018-06-07 304-974-5XXX 5000–5999Assigned CITYNET WEST VIRGINIA, LLC - WV 545B MORGANTOWN WV
2018-06-06 304-202-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 PINEVILLE WV
2018-05-25 304-310-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WV 077G CHAPMANVL WV
2018-05-25 304-519-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WV 077G SPENCER WV
2018-05-25 304-870-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WV 077G SHEPHEDSTN WV
2018-05-23 304-451-1XXX 1000–1999Assigned PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV 928H NEWMRTNSVL WV
2018-05-23 304-738-7XXX 7000–7999Assigned CORETEL WEST VIRGINIA, INC. - WV 5833 RIDGELEY WV
2018-05-17 304-313-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLEBORN WV
2018-05-17 304-313-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLEBORN WV
2018-05-17 304-401-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SISTERSVL WV
2018-05-17 304-401-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SISTERSVL WV
2018-05-10 304-244-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F MORGANTOWN WV
2018-05-07 304-507-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F KINGWOOD WV
2018-05-07 304-774-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F HELEN WV
2018-05-04 304-990-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON5 WV
2018-05-04 304-990-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON5 WV
2018-05-02 304-440-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F RAVENSWOOD WV
2018-05-02 304-519-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F SPENCER WV
2018-05-02 304-660-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F HINTON WV
2018-05-02 304-903-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F GRAFTON WV
2018-05-01 304-223-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F FLAT TOP WV
2018-05-01 304-316-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F NEWCUMBRLD WV
2018-05-01 304-403-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F TERRA ALTA WV
2018-05-01 304-446-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F ELK GARDEN WV
2018-05-01 304-508-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F MANNINGTON WV
2018-04-30 304-402-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F SUTTON WV
2018-04-30 304-843-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON5 WV
2018-04-25 304-398-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F NEWMRTNSVL WV
2018-04-20 304-384-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ATHENS WV
2018-04-20 304-384-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ATHENS WV
2018-04-20 304-384-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ATHENS WV
2018-04-20 304-409-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BLUEWELL WV
2018-04-20 304-409-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BLUEWELL WV
2018-04-20 304-409-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BLUEWELL WV
2018-04-20 304-716-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PRINCETON WV
2018-04-20 304-716-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PRINCETON WV
2018-04-20 304-716-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PRINCETON 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.