NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — NPA 646
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-07-31 | 646-482-0XXX | 0000–0999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-1XXX | 1000–1999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-2XXX | 2000–2999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-3XXX | 3000–3999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-5XXX | 5000–5999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-7XXX | 7000–7999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-8XXX | 8000–8999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-482-9XXX | 9000–9999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | NWYRCYZN01 | NY |
| 2008-07-31 | 646-571-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-571-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-657-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-657-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-807-2XXX | 2000–2999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-807-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-31 | 646-929-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - NY | 282E | NWYRCYZN01 | NY |
| 2008-07-08 | 646-395-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-06-27 | 646-833-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-23 | 646-657-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-20 | 646-833-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-06-16 | 646-395-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-06-16 | 646-395-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-06-16 | 646-434-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-06-16 | 646-434-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-06-16 | 646-434-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-06-09 | 646-845-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-06-06 | 646-794-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-06 | 646-794-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-06 | 646-794-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-06 | 646-794-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-06 | 646-794-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | NWYRCYZN01 | NY |
| 2008-06-02 | 646-395-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-0XXX | 0000–0999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-1XXX | 1000–1999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-2XXX | 2000–2999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-3XXX | 3000–3999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-4XXX | 4000–4999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-5XXX | 5000–5999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-6XXX | 6000–6999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-7XXX | 7000–7999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-8XXX | 8000–8999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-30 | 646-433-9XXX | 9000–9999 | Assigned | VERIZON NEW YORK, INC. | 9104 | NWYRCYZN01 | NY |
| 2008-05-29 | 646-807-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-29 | 646-845-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-21 | 646-350-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-21 | 646-350-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-21 | 646-350-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-21 | 646-350-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
| 2008-05-21 | 646-355-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NWYRCYZN01 | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.