NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

17 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 443
ONVOY, LLC - MD 8
NEW CINGULAR WIRELESS PCS, LLC - DC 4
VERSATEL LLC 1
OPENTACT INC. 1
LEVEL 3 COMMUNICATIONS, LLC - MD 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
2021-02-22 443-565-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G RANDALLSTN MD
2021-02-22 443-689-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G COCKEYSVL MD
2021-02-12 443-669-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J DELMAR MD
2021-02-12 443-888-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PRINCEANNE MD
2021-02-12 443-972-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CAMBRIDGE MD
2021-02-05 443-234-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D SNOW HILL MD
2021-02-05 443-446-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D QUEENSTOWN MD
2021-02-05 443-446-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D QUEENSTOWN MD
2021-02-05 443-448-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D DENTON MD
2021-02-05 443-566-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D CHESAPKECY MD
2021-02-05 443-640-9XXX 9000–9999Assigned TELNYX LLC 073H BEL AIR MD
2021-02-05 443-727-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D BISHOPVL MD
2021-02-05 443-941-3XXX 3000–3999Assigned TELNYX LLC 073H ELKTON MD
2021-02-04 443-719-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D JARRETTSVL MD
2021-02-03 443-212-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D SPARKSGLNC MD
2021-02-03 443-230-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D ODENTON MD
2021-02-03 443-305-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D ARGRGBSNIS MD
2021-02-03 443-335-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D BRYNPKLNCM MD
2021-02-03 443-335-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D BRYNPKLNCM MD
2021-02-03 443-581-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D CHASE MD
2021-02-03 443-581-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D CHASE MD
2021-02-03 443-688-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D SEVERN MD
2021-02-03 443-781-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D ARGRGBSNIS MD
2021-02-03 443-781-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D ARGRGBSNIS MD
2021-02-03 443-966-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D FALLSTON MD
2021-01-27 443-228-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHASE MD
2021-01-27 443-575-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ARBUTUS MD
2021-01-27 443-575-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ARBUTUS MD
2021-01-27 443-575-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ARBUTUS MD
2021-01-27 443-581-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHASE MD
2021-01-14 443-242-1XXX 1000–1999Assigned METROPCS, INC. 5562 SPARROWSPT MD
2021-01-06 443-969-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ESSEX MD
2020-12-30 443-299-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J FALLSTON MD
2020-12-30 443-483-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J CARDIFF MD
2020-12-30 443-848-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J GLENBURNIE MD
2020-12-30 443-877-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J NORTH EAST MD
2020-12-22 443-228-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CHASE MD
2020-12-22 443-616-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BEL AIR MD
2020-12-15 443-716-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2020-12-10 443-265-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK MD
2020-12-07 443-363-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEVERN MD
2020-11-19 443-969-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ESSEX MD
2020-11-02 443-229-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2020-11-02 443-490-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F EDGEWOOD MD
2020-11-02 443-673-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BRYNPKLNCM MD
2020-10-30 443-332-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CROFTON MD
2020-10-16 443-339-2XXX 2000–2999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SHERWD FOR MD
2020-10-16 443-384-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PARKVILLE MD
2020-09-30 443-396-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2020-09-30 443-399-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G DUNDALK 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.