NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 410
ONVOY, LLC - MD 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
2005-03-01 410-926-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-926-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-926-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-03-01 410-948-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-02-23 410-845-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SALISBURY MD
2005-02-23 410-845-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SALISBURY MD
2005-02-14 410-870-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PARKVILLE MD
2005-02-12 410-306-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J ABERDEEN MD
2005-02-11 410-436-0XXX 0000–0999Assigned VERIZON MARYLAND, INC. 9212 EDGEWOOD MD
2005-02-11 410-436-9XXX 9000–9999Assigned VERIZON MARYLAND, INC. 9212 EDGEWOOD MD
2005-02-11 410-510-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FORK MD
2005-02-11 410-671-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J EDGEWOOD MD
2005-02-11 410-695-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ODENTON MD
2005-02-11 410-696-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ELLICOTTCY MD
2005-02-11 410-701-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J RANDALLSTN MD
2005-02-11 410-702-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J REISTERSTN MD
2005-02-11 410-793-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEVERNA PK MD
2005-02-11 410-846-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEVERN MD
2005-02-11 410-853-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TOWSON MD
2005-02-11 410-941-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J JARRETTSVL MD
2005-02-10 410-306-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ABERDEEN MD
2005-02-10 410-571-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ANNAPOLIS MD
2005-02-10 410-630-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHASE MD
2005-02-10 410-776-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BEL AIR MD
2005-02-10 410-800-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BALTIMORE MD
2005-02-10 410-914-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHURCHVL MD
2005-02-10 410-988-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ELLICOTTCY MD
2005-02-07 410-901-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CAMBRIDGE MD
2005-02-07 410-940-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ANNAPOLIS MD
2005-02-05 410-926-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-02-05 410-926-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2005-02-02 410-846-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SEVERN MD
2005-02-02 410-970-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SYKESVILLE MD
2005-02-01 410-774-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CROFTON MD
2005-01-28 410-900-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-01-28 410-900-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-01-26 410-361-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-01-26 410-361-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-01-26 410-464-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2005-01-26 410-464-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2005-01-26 410-483-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2005-01-26 410-585-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BALTIMORE 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.