NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 646
OMNIPOINT COMMUNICATIONS, INC. - NY 1083
PAETEC ITEL, LLC 609
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 595
NEW CINGULAR WIRELESS PCS, LLC - DC 518
BANDWIDTH.COM CLEC, LLC - NY 497
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
2004-11-29 646-463-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NWYRCYZN01 NY
2004-11-29 646-463-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NWYRCYZN01 NY
2004-11-29 646-542-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-542-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-542-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-542-5XXX 5000–5999Assigned CSC VOICE, LLC 612K NWYRCYZN01 NY
2004-11-29 646-542-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NWYRCYZN01 NY
2004-11-29 646-725-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-725-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-764-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NWYRCYZN01 NY
2004-11-29 646-919-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-919-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-29 646-919-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-11 646-330-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2004-11-11 646-330-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2004-11-11 646-403-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2004-11-11 646-403-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2004-11-08 646-764-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-08 646-764-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2004-11-05 646-330-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-330-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-330-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-330-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-725-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-725-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-725-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-725-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-05 646-919-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-388-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-388-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-388-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-491-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-491-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-491-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-573-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-573-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-573-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-675-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-675-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-675-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-812-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-812-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-11-04 646-812-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-10-30 646-463-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2004-10-30 646-463-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY

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.