NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

62 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 227
ONVOY, LLC - MD 25
NEW CINGULAR WIRELESS PCS, LLC - DC 17
BANDWIDTH.COM CLEC, LLC - MD 8
INTRADO COMMUNICATIONS, LLC 4
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 4
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
2023-10-17 227-777-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J ASHTON238 MD
2023-10-12 227-214-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-12 227-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-10-11 227-999-7XXX 7000–7999Assigned HD CARRIER LLC 321J WSNGTNZN10 MD
2023-10-11 227-999-9XXX 9000–9999Assigned WIDE VOICE, LLC - MD 530H WSNGTNZN10 MD
2023-09-27 227-215-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2023-09-27 227-215-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2023-09-27 227-215-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2023-09-25 227-214-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D MYERSVILLE MD
2023-09-25 227-214-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D MYERSVILLE MD
2023-09-20 227-200-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-200-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-09-20 227-202-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-202-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-204-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-205-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2023-09-20 227-205-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2023-09-20 227-205-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2023-09-20 227-215-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2023-09-20 227-216-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-20 227-216-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-09-19 227-203-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2023-09-19 227-203-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2023-09-18 227-888-7XXX 7000–7999Assigned HD CARRIER LLC 321J WSNG238Z15 MD

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.