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
2007-03-02 585-808-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WELLSVILLE NY
2007-03-02 585-991-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2007-02-21 585-268-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K BELMONT NY
2007-02-21 585-466-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K ANGELICA NY
2007-02-21 585-535-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K VARYSBURG NY
2007-02-21 585-973-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K FRIENDSHIP NY
2007-02-20 585-367-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K HEMLOCK NY
2007-02-20 585-384-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K COHOCTON NY
2007-02-16 585-698-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2007-02-09 585-284-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-284-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-285-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-09 585-286-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2007-02-05 585-643-0XXX 0000–0999Assigned METROPCS, INC. 5562 EROCHESTER NY
2007-01-18 585-205-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLEPORT NY
2007-01-18 585-627-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2007-01-16 585-457-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K JAVA NY
2007-01-08 585-268-4XXX 4000–4999Assigned TC SYSTEMS, INC. - NY 7140 BELMONT NY
2007-01-04 585-297-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2007-01-04 585-490-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-01-04 585-689-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BLISS NY
2007-01-04 585-690-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-01-04 585-690-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-01-04 585-760-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-01-04 585-991-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2007-01-02 585-919-4XXX 4000–4999Assigned METROPCS, INC. 5562 CANANDAGUA NY
2006-12-18 585-360-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2006-12-08 585-765-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LYNDONVL NY
2006-12-05 585-545-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2006-12-05 585-590-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2006-12-05 585-596-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K WELLSVILLE NY
2006-12-05 585-690-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2006-12-05 585-690-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2006-12-05 585-690-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER 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.