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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-09-18 227-239-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2026-09-18 227-529-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F GAITHERSBG MD
2026-09-16 227-281-5XXX 5000–5999Assigned INTRADO COMMUNICATIONS, LLC 820C FREDERICK MD
2026-09-16 227-307-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2026-09-16 227-308-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2026-09-16 227-313-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2026-09-16 227-314-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WALDORF MD
2026-09-16 227-320-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LAUREL236 MD
2026-09-16 227-997-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2026-09-15 227-296-7XXX 7000–7999Assigned OPENTACT INC. 824J WSNGTNZN12 MD
2026-09-14 227-235-7XXX 7000–7999Assigned VERSATEL LLC 962J HUGHESVL MD
2026-09-14 227-316-7XXX 7000–7999Assigned VERSATEL LLC 962J BRUNSWICK MD
2026-09-14 227-368-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D MECHANCSVL MD
2026-09-11 227-319-0XXX 0000–0999Assigned INTRADO COMMUNICATIONS, LLC 820C WSNGTNZN10 MD
2026-09-09 227-317-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2026-09-04 227-238-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSNG236Z14 MD
2026-09-04 227-288-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D HAGERSTOWN MD
2026-09-04 227-288-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D HAGERSTOWN MD
2026-09-04 227-293-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D CUMBERLAND MD
2026-09-04 227-302-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2026-09-04 227-302-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2026-09-04 227-321-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D WSHNGTNZN4 MD
2026-09-04 227-333-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSNGTNZN16 MD
2026-09-04 227-333-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D WSNGTNZN16 MD
2026-09-04 227-529-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2026-09-04 227-529-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2026-09-03 227-307-7XXX 7000–7999Assigned INTRADO COMMUNICATIONS, LLC 820C WSHNGTNZN2 MD
2026-09-03 227-308-7XXX 7000–7999Assigned INTRADO COMMUNICATIONS, LLC 820C WSHNGTNZN3 MD
2026-09-03 227-333-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN16 MD
2026-09-02 227-320-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2026-09-02 227-320-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2026-09-01 227-295-3XXX 3000–3999Assigned TELNYX LLC 073H HAGERSTOWN MD
2026-09-01 227-298-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-298-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-298-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-298-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-298-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-298-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-305-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-305-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-307-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2026-09-01 227-310-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-310-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-319-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-319-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-09-01 227-319-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2026-08-26 227-292-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D ASHTON236 MD
2026-08-25 227-306-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2026-08-25 227-306-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2026-08-25 227-306-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN 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.