NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 585
EXIANT COMMUNICATIONS LLC 3
TC SYSTEMS, INC. - NY 1
NEW CINGULAR WIRELESS PCS, LLC - DC 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
2022-06-10 585-574-3XXX 3000–3999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-4XXX 4000–4999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-5XXX 5000–5999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-6XXX 6000–6999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-7XXX 7000–7999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-8XXX 8000–8999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-574-9XXX 9000–9999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-06-10 585-895-0XXX 0000–0999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-05-17 585-606-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2022-05-17 585-606-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2022-04-28 585-895-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2022-04-21 585-619-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-619-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-04-21 585-844-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FAIRPORT NY
2022-04-20 585-868-9XXX 9000–9999Assigned TELNYX LLC 073H VARYSBURG NY
2022-04-11 585-551-3XXX 3000–3999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-04-11 585-551-4XXX 4000–4999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-04-11 585-551-7XXX 7000–7999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-04-11 585-551-8XXX 8000–8999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-04-11 585-551-9XXX 9000–9999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E ROCHESTER NY
2022-04-06 585-606-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2022-04-05 585-570-0XXX 0000–0999Assigned TELNYX LLC 073H FRIENDSHIP NY
2022-04-05 585-572-9XXX 9000–9999Assigned TELNYX LLC 073H LIVONIA NY
2022-04-05 585-665-1XXX 1000–1999Assigned TELNYX LLC 073H OAKFIELD NY
2022-04-05 585-817-0XXX 0000–0999Assigned TELNYX LLC 073H PAVILION NY
2022-03-29 585-895-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2022-03-17 585-609-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-03-17 585-609-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-03-17 585-609-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-03-17 585-609-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-03-17 585-609-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2022-03-14 585-618-1XXX 1000–1999Assigned COMMIO, LLC 939H FAIRPORT NY
2022-03-11 585-612-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J DANSVILLE NY
2022-03-09 585-933-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J OLEAN NY
2022-03-08 585-895-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2022-02-22 585-418-9XXX 9000–9999Assigned PEERING HUB, INC. - NY 818H E PEMBROKE NY
2022-02-22 585-543-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J OLEAN NY
2022-02-22 585-799-6XXX 6000–6999Assigned PEERING HUB, INC. - NY 818H BYRON NY
2022-02-18 585-551-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ROCHESTER NY
2022-02-18 585-551-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ROCHESTER NY
2022-02-17 585-580-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ANGELICA NY
2022-02-15 585-832-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J HENRIETTA NY
2022-02-11 585-408-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ARCADE NY
2022-02-11 585-408-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ARCADE 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.