NumberResearchRecent thousands-block assignments
5 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 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 |
|---|---|---|---|---|---|---|---|
| 2006-06-22 | 203-880-4XXX | 4000–4999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | TRUMBULL | CT |
| 2006-06-21 | 203-505-6XXX | 6000–6999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | NORWALK | CT |
| 2006-06-20 | 203-208-5XXX | 5000–5999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | BRANFORD | CT |
| 2006-06-20 | 203-292-7XXX | 7000–7999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | FAIRFIELD | CT |
| 2006-06-20 | 203-513-7XXX | 7000–7999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | HUNTINGTON | CT |
| 2006-06-20 | 203-713-6XXX | 6000–6999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | MILFORD | CT |
| 2006-06-15 | 203-665-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | WILTON | CT |
| 2006-06-13 | 203-742-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 7230 | GREENWICH | CT |
| 2006-06-12 | 203-479-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | NEW HAVEN | CT |
| 2006-06-12 | 203-669-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | DARIEN | CT |
| 2006-06-08 | 203-383-2XXX | 2000–2999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | BRIDGEPORT | CT |
| 2006-06-08 | 203-428-6XXX | 6000–6999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | STAMFORD | CT |
| 2006-06-08 | 203-527-8XXX | 8000–8999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | WATERBURY | CT |
| 2006-06-08 | 203-599-8XXX | 8000–8999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | MERIDEN | CT |
| 2006-06-08 | 203-826-5XXX | 5000–5999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | DANBURY | CT |
| 2006-06-06 | 203-505-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NORWALK | CT |
| 2006-06-06 | 203-598-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | WATERBURY | CT |
| 2006-06-06 | 203-815-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEW HAVEN | CT |
| 2006-06-02 | 203-551-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | BRIDGEPORT | CT |
| 2006-06-02 | 203-987-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | GREENWICH | CT |
| 2006-06-01 | 203-303-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | WALLINGFD | CT |
| 2006-05-30 | 203-391-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | STAMFORD | CT |
| 2006-05-24 | 203-956-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | NORWALK | CT |
| 2006-05-18 | 203-992-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | GREENWICH | CT |
| 2006-05-16 | 203-954-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | ANSONIDRBY | CT |
| 2006-05-15 | 203-908-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | BRIDGEPORT | CT |
| 2006-05-15 | 203-908-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | BRIDGEPORT | CT |
| 2006-05-15 | 203-908-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | BRIDGEPORT | CT |
| 2006-05-09 | 203-745-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW HAVEN | CT |
| 2006-05-09 | 203-745-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW HAVEN | CT |
| 2006-05-09 | 203-745-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW HAVEN | CT |
| 2006-04-28 | 203-571-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | WESTPORT | CT |
| 2006-04-28 | 203-814-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | BRIDGEPORT | CT |
| 2006-04-19 | 203-297-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DANBURY | CT |
| 2006-04-19 | 203-363-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | STAMFORD | CT |
| 2006-04-19 | 203-812-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2006-04-19 | 203-812-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEW HAVEN | CT |
| 2006-04-17 | 203-599-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | MERIDEN | CT |
| 2006-04-10 | 203-745-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | NEW HAVEN | CT |
| 2006-04-10 | 203-745-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | NEW HAVEN | CT |
| 2006-04-10 | 203-832-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2006-04-10 | 203-832-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | STAMFORD | CT |
| 2006-04-07 | 203-504-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | STAMFORD | CT |
| 2006-04-07 | 203-692-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | FAIRFIELD | CT |
| 2006-04-06 | 203-814-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2006-04-06 | 203-908-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | BRIDGEPORT | CT |
| 2006-04-05 | 203-599-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | MERIDEN | CT |
| 2006-04-03 | 203-304-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | NEWTOWN | CT |
| 2006-04-03 | 203-516-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ANSONIDRBY | CT |
| 2006-03-31 | 203-535-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEW HAVEN | CT |
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.