NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

70 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 667
NEW CINGULAR WIRELESS PCS, LLC - DC 38
ONVOY, LLC - MD 18
BANDWIDTH.COM CLEC, LLC - MD 6
METROPCS, INC. 2
INTRADO COMMUNICATIONS, LLC 2
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
2026-09-16 667-452-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-501-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F DUNDALK MD
2026-09-16 667-517-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-517-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-517-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-517-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-517-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-517-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-548-7XXX 7000–7999Assigned INTRADO COMMUNICATIONS, LLC 820C TOWSON MD
2026-09-16 667-548-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F TOWSON MD
2026-09-16 667-549-9XXX 9000–9999Assigned INTRADO COMMUNICATIONS, LLC 820C ANNAPOLIS MD
2026-09-16 667-554-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F COLUMBIA MD
2026-09-16 667-557-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-16 667-557-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-09-15 667-293-7XXX 7000–7999Assigned OPENTACT INC. 824J SHARPTOWN MD
2026-09-14 667-285-7XXX 7000–7999Assigned VERSATEL LLC 962J HURLOCK MD
2026-09-11 667-541-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J GLENBURNIE MD
2026-09-09 667-448-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D REISTERSTN MD
2026-09-09 667-448-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D REISTERSTN MD
2026-09-09 667-452-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D CATONSVL MD
2026-09-09 667-475-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D CROFTON MD
2026-09-09 667-541-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D GLENBURNIE MD
2026-09-09 667-550-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-550-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-550-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-550-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-552-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2026-09-09 667-552-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2026-09-09 667-554-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-554-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-554-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-554-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-554-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-09-09 667-556-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D BEL AIR MD
2026-09-04 667-479-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D ELLICOTTCY MD
2026-09-04 667-508-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WOODLAWN MD
2026-09-04 667-508-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WOODLAWN MD
2026-09-04 667-552-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D SEVERNA PK MD
2026-09-04 667-552-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D SEVERNA PK MD
2026-09-03 667-386-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ARBUTUS MD
2026-09-03 667-478-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SYKESVILLE MD
2026-09-03 667-543-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PIKESVILLE MD

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.