NumberResearchRecent thousands-block assignments
0 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, all time — NPA 720
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-04-04 | 720-631-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-04-04 | 720-631-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-03-20 | 720-607-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-607-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-03-20 | 720-753-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | FORTLUPTON | CO |
| 2017-03-17 | 720-791-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | GEORGETOWN | CO |
| 2017-03-16 | 720-996-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2017-03-15 | 720-487-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-15 | 720-487-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2017-03-13 | 720-571-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | ALLNSPKLYN | CO |
| 2017-03-13 | 720-572-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | DENVER | CO |
| 2017-03-13 | 720-669-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | HUDSON | CO |
| 2017-03-13 | 720-676-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | DENVER | CO |
| 2017-03-13 | 720-735-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | KEENESBURG | CO |
| 2017-03-13 | 720-753-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | FORTLUPTON | CO |
| 2017-03-07 | 720-572-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-03-07 | 720-651-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-03-07 | 720-758-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-02-28 | 720-651-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-02-28 | 720-651-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-02-28 | 720-651-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-02-20 | 720-572-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-02-16 | 720-572-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2017-02-09 | 720-758-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2017-02-09 | 720-758-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2017-02-09 | 720-758-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2017-02-09 | 720-758-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2017-02-09 | 720-758-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2017-01-31 | 720-693-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | DENVER | CO |
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.