NumberResearchRecent thousands-block assignments
3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-08-19 | 631-832-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | BAYPORT | NY |
| 2014-08-15 | 631-800-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOUTHAMPTN | NY |
| 2014-08-15 | 631-800-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOUTHAMPTN | NY |
| 2014-08-12 | 631-296-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | BRIDGEMPTN | NY |
| 2014-08-08 | 631-552-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | AMITYVILLE | NY |
| 2014-08-08 | 631-815-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | FARMINGDL | NY |
| 2014-08-04 | 631-825-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | MONTAUK PT | NY |
| 2014-07-30 | 631-997-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2014-07-30 | 631-997-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2014-07-29 | 631-637-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2014-07-29 | 631-637-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2014-07-29 | 631-637-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2014-07-29 | 631-637-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2014-07-25 | 631-820-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | RONKONKOMA | NY |
| 2014-07-14 | 631-740-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | RIVERHEAD | NY |
| 2014-07-08 | 631-250-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | ST JAMES | NY |
| 2014-07-08 | 631-307-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | PATCHOGUE | NY |
| 2014-07-08 | 631-315-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | MATTITUCK | NY |
| 2014-07-08 | 631-326-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | COMMACK | NY |
| 2014-07-08 | 631-341-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | YAPHANK | NY |
| 2014-07-08 | 631-350-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | HUNTINGTON | NY |
| 2014-07-08 | 631-364-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | STONYBROOK | NY |
| 2014-07-08 | 631-483-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | MONTAUK PT | NY |
| 2014-07-08 | 631-500-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | WATER MILL | NY |
| 2014-07-08 | 631-518-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | BAY SHORE | NY |
| 2014-07-08 | 631-538-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | SELDEN | NY |
| 2014-07-08 | 631-542-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | RONKONKOMA | NY |
| 2014-07-08 | 631-573-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SAYVILLE | NY |
| 2014-07-08 | 631-599-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | RIVERHEAD | NY |
| 2014-07-08 | 631-620-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | BABYLON | NY |
| 2014-07-08 | 631-633-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | BELLPORT | NY |
| 2014-07-08 | 631-637-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | BRENTWOOD | NY |
| 2014-07-08 | 631-637-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BRENTWOOD | NY |
| 2014-07-08 | 631-637-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BRENTWOOD | NY |
| 2014-07-08 | 631-652-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | SMITHTOWN | NY |
| 2014-07-08 | 631-674-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | MIDLAND | NY |
| 2014-07-08 | 631-743-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | PTJEFFERSN | NY |
| 2014-07-08 | 631-800-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SOUTHAMPTN | NY |
| 2014-07-08 | 631-832-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | BAYPORT | NY |
| 2014-07-08 | 631-837-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | NORTHPORT | NY |
| 2014-07-08 | 631-856-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | HAMPTNBAYS | NY |
| 2014-07-08 | 631-857-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | COLDSPGHBR | NY |
| 2014-07-08 | 631-858-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | W COMMACK | NY |
| 2014-07-08 | 631-881-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | CENTRAISLP | NY |
| 2014-07-08 | 631-888-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | LINDENHST | NY |
| 2014-07-08 | 631-960-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | ISLIP | NY |
| 2014-07-08 | 631-973-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | KINGS PARK | NY |
| 2014-07-08 | 631-992-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | DEER PARK | NY |
| 2014-07-07 | 631-568-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | AMITYVILLE | NY |
| 2014-06-23 | 631-800-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOUTHAMPTN | 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.