NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 631
CSC WIRELESS, LLC 3
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
2019-05-06 631-937-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 SOUTHOLD NY
2019-05-06 631-937-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 SOUTHOLD NY
2019-05-01 631-809-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J DEER PARK NY
2019-05-01 631-809-3XXX 3000–3999Assigned CSC WIRELESS, LLC 425J DEER PARK NY
2019-04-26 631-437-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FIREISLAND NY
2019-04-25 631-939-9XXX 9000–9999Assigned METROPCS, INC. 5562 RIVERHEAD NY
2019-04-24 631-690-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATCHOGUE NY
2019-04-22 631-529-9XXX 9000–9999Assigned CORETEL NEW YORK, INC. - NY 1215 ORIENT NY
2019-04-17 631-313-0XXX 0000–0999Assigned IP HORIZON LLC 515J ISLIP NY
2019-04-15 631-381-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C RIVERHEAD NY
2019-04-15 631-515-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C SHELTER IS NY
2019-04-15 631-515-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C SHELTER IS NY
2019-04-15 631-699-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C SAYVILLE NY
2019-04-15 631-710-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C RONKONKOMA NY
2019-04-15 631-710-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C RONKONKOMA NY
2019-04-15 631-825-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C MONTAUK PT NY
2019-04-15 631-825-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C MONTAUK PT NY
2019-04-11 631-250-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ST JAMES NY
2019-04-11 631-250-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C ST JAMES NY
2019-04-11 631-341-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C YAPHANK NY
2019-04-11 631-345-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C YAPHANK NY
2019-03-27 631-658-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 E HAMPTON NY
2019-03-21 631-469-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2019-03-20 631-345-4XXX 4000–4999Assigned CORETEL NEW YORK, INC. - NY 1215 YAPHANK NY
2019-03-20 631-378-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 SHOREHAM NY
2019-03-20 631-458-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 SAG HARBOR NY
2019-03-20 631-684-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 WESTHAMPTN NY
2019-03-20 631-749-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 SHELTER IS NY
2019-03-20 631-862-4XXX 4000–4999Assigned CORETEL NEW YORK, INC. - NY 1215 ST JAMES NY
2019-03-18 631-253-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 MIDLAND NY
2019-03-18 631-269-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 KINGS PARK NY
2019-03-18 631-477-7XXX 7000–7999Assigned CORETEL NEW YORK, INC. - NY 1215 GREENPORT NY
2019-03-18 631-547-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 HUNTINGTON NY
2019-03-18 631-723-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 HAMPTNBAYS NY
2019-03-18 631-735-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 PECONIC NY
2019-03-18 631-825-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 MONTAUK PT NY
2019-03-18 631-993-9XXX 9000–9999Assigned CORETEL NEW YORK, INC. - NY 1215 COMMACK NY
2019-03-15 631-296-4XXX 4000–4999Assigned CORETEL NEW YORK, INC. - NY 1215 BRIDGEMPTN NY
2019-03-15 631-557-7XXX 7000–7999Assigned CORETEL NEW YORK, INC. - NY 1215 AMAGANSETT NY
2019-03-15 631-947-9XXX 9000–9999Assigned CORETEL NEW YORK, INC. - NY 1215 BELLPORT NY
2019-03-06 631-203-9XXX 9000–9999Assigned TELNYX LLC 073H CENTRAISLP NY
2019-03-06 631-809-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 DEER PARK NY
2019-02-28 631-246-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 STONYBROOK NY
2019-02-28 631-266-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 W COMMACK NY
2019-02-28 631-436-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 BRENTWOOD NY
2019-02-28 631-437-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 FIREISLAND NY
2019-02-28 631-628-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 NORTHPORT NY
2019-02-28 631-763-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 COLDSPGHBR NY
2019-02-28 631-843-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 FARMINGDL NY
2019-02-13 631-529-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 ORIENT 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.