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
2010-11-04 304-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BLUEFIELD WV
2010-11-02 304-566-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F CLARKSBURG WV
2010-10-27 304-618-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUMMERSVL WV
2010-10-27 304-972-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2010-10-22 304-517-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WESTON WV
2010-10-08 304-356-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2010-10-08 304-356-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2010-10-08 304-916-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2010-10-06 304-207-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BECKLEY WV
2010-10-05 304-531-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
2010-10-01 304-300-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F CLARKSBURG WV
2010-10-01 304-460-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BUCKHANNON WV
2010-10-01 304-460-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BUCKHANNON WV
2010-10-01 304-566-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F CLARKSBURG WV
2010-10-01 304-712-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BECKLEY WV
2010-10-01 304-712-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BECKLEY WV
2010-10-01 304-712-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BECKLEY WV
2010-10-01 304-712-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BECKLEY WV
2010-09-27 304-635-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELKINS WV
2010-09-22 304-273-1XXX 1000–1999Assigned CAS COMMUNICATIONS, LLC - WV 875F RAVENSWOOD WV
2010-09-22 304-786-1XXX 1000–1999Assigned CAS COMMUNICATIONS, LLC - WV 875F RIPLEY WV
2010-09-22 304-893-9XXX 9000–9999Assigned CAS COMMUNICATIONS, LLC - WV 875F PRKRSBGZN1 WV
2010-09-20 304-209-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F KEYSER WV
2010-09-20 304-591-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F ELKINS WV
2010-09-20 304-900-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F FAYETTEVL WV
2010-09-15 304-992-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISBURG WV
2010-09-10 304-594-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHEAT LAKE WV
2010-09-08 304-215-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WHELNGZON1 WV
2010-09-08 304-400-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 CHRLSTNZN1 WV
2010-09-08 304-400-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 CHRLSTNZN1 WV
2010-09-08 304-964-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 SCOTTDEPOT WV
2010-09-08 304-966-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN1 WV
2010-08-23 304-400-4XXX 4000–4999Assigned CSC VOICE, LLC 612K CHRLSTNZN1 WV
2010-08-17 304-719-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOUNT HOPE WV
2010-08-17 304-730-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 HNTNGTNZN1 WV
2010-08-13 304-402-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F SUTTON WV
2010-08-12 304-679-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN2 WV
2010-08-11 304-207-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BECKLEY WV
2010-08-11 304-207-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BECKLEY WV
2010-08-11 304-309-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F HINTON WV
2010-08-11 304-960-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BLUEFIELD WV
2010-08-04 304-400-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 CHRLSTNZN1 WV
2010-08-04 304-400-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 CHRLSTNZN1 WV
2010-07-15 304-604-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEIRTON WV
2010-07-15 304-923-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BECKLEY WV
2010-07-12 304-583-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MAN WV
2010-07-12 304-966-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN1 WV
2010-07-12 304-966-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 PRKRSBGZN1 WV
2010-07-07 304-308-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BLUEFIELD WV
2010-07-07 304-406-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 WESTON 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.