NumberResearchRecent thousands-block assignments
5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 203
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 |
|---|---|---|---|---|---|---|---|
| 2002-05-23 | 203-252-5XXX | 5000–5999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | STAMFORD | CT |
| 2002-03-12 | 203-302-1XXX | 1000–1999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | GREENWICH | CT |
| 2002-03-12 | 203-302-2XXX | 2000–2999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | GREENWICH | CT |
| 2002-01-30 | 203-463-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | SEYMOUR | CT |
| 2002-01-10 | 203-446-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ANSONIDRBY | CT |
| 2001-08-15 | 203-446-8XXX | 8000–8999 | Assigned | CABLEVISION LIGHTPATH, INC. - CT | 4950 | ANSONIDRBY | CT |
| 2001-08-13 | 203-409-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | OLDGRNWICH | CT |
| 2001-08-13 | 203-532-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | BYRAM | CT |
| 2001-07-18 | 203-364-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | NEWTOWN | CT |
| 2001-06-08 | 203-405-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | WOODBURY | CT |
| 2001-05-14 | 203-626-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | WALLINGFD | CT |
| 2001-04-27 | 203-487-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | STAMFORD | CT |
| 2001-04-27 | 203-523-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | NORWALK | CT |
| 2001-04-27 | 203-571-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WESTPORT | CT |
| 2001-04-27 | 203-701-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | MILFORD | CT |
| 2001-04-27 | 203-935-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | MERIDEN | CT |
| 2001-04-17 | 203-403-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | RIDGEFIELD | CT |
| 2001-04-17 | 203-725-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | WATERBURY | CT |
| — | 203-202-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | DARIEN | CT |
| — | 203-202-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | DARIEN | CT |
| — | 203-210-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | WILTON | CT |
| — | 203-210-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | WILTON | CT |
| — | 203-220-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | TRUMBULL | CT |
| — | 203-220-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | TRUMBULL | CT |
| — | 203-283-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | MILFORD | CT |
| — | 203-283-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | MILFORD | CT |
| — | 203-283-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MILFORD | CT |
| — | 203-283-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | MILFORD | CT |
| — | 203-292-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| — | 203-292-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| — | 203-292-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| — | 203-292-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| — | 203-292-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | FAIRFIELD | CT |
| — | 203-298-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | NEW HAVEN | CT |
| — | 203-298-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NEW HAVEN | CT |
| — | 203-344-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | OLDGRNWICH | CT |
| — | 203-487-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | STAMFORD | CT |
| — | 203-557-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | WESTPORT | CT |
| — | 203-557-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | WESTPORT | CT |
| — | 203-557-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | WESTPORT | CT |
| — | 203-557-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | WESTPORT | CT |
| — | 203-569-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | STAMFORD | CT |
| — | 203-569-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | STAMFORD | CT |
| — | 203-569-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | STAMFORD | CT |
| — | 203-587-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | GEORGETOWN | CT |
| — | 203-587-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | GEORGETOWN | CT |
| — | 203-594-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | NEW CANAAN | CT |
| — | 203-594-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | NEW CANAAN | CT |
| — | 203-594-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | NEW CANAAN | CT |
| — | 203-664-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | REDDING | CT |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.