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
2022-03-28 667-375-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D CHASE MD
2022-03-28 667-390-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D RANDALLSTN MD
2022-03-28 667-390-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D RANDALLSTN MD
2022-03-28 667-392-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D ABERDEEN MD
2022-03-28 667-405-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D GLENBURNIE MD
2022-03-28 667-665-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D HILLSBORO MD
2022-03-28 667-810-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D SALISBURY MD
2022-03-28 667-832-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D BRYNPKLNCM MD
2022-03-28 667-832-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D BRYNPKLNCM MD
2022-03-28 667-846-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D COCKEYSVL MD
2022-03-28 667-925-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D BEL AIR MD
2022-03-25 667-395-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CARDIFF MD
2022-03-25 667-398-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PT DEPOSIT MD
2022-03-24 667-376-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J OXFORD MD
2022-03-23 667-357-9XXX 9000–9999Assigned TELNYX LLC 073H GREENSBORO MD
2022-03-23 667-622-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J PIKESVILLE MD
2022-03-23 667-693-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J VIENNA MD
2022-03-22 667-374-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WATERLO238 MD
2022-03-22 667-379-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-379-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-391-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2022-03-22 667-405-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD
2022-03-22 667-405-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD
2022-03-22 667-405-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD
2022-03-22 667-405-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD
2022-03-22 667-661-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SNOW HILL MD
2022-03-14 667-348-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J RIDGELY MD
2022-03-14 667-772-9XXX 9000–9999Assigned TON80 COMMUNICATIONS, LLC 516J SPARKSGLNC MD
2022-03-14 667-827-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J BERLIN MD
2022-03-09 667-281-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SALISBURY MD
2022-03-09 667-743-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J QUEENSTOWN MD
2022-03-08 667-287-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J BISHOPVL MD
2022-03-08 667-388-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J SEVERN MD
2022-03-08 667-394-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J NEWWINDSOR MD
2022-03-08 667-766-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J STEVENSVL MD
2022-03-07 667-832-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2022-03-04 667-331-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2022-03-04 667-331-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2022-03-04 667-331-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2022-03-04 667-383-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2022-03-04 667-383-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2022-03-04 667-483-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J DEALISLAND MD
2022-03-03 667-526-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J CENTREVL MD
2022-03-02 667-375-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J CHASE MD
2022-03-01 667-322-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J WATERLO236 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.