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 |
|---|---|---|---|---|---|---|---|
| 2017-06-16 | 720-510-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-06-16 | 720-510-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-06-16 | 720-586-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2017-06-16 | 720-586-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2017-06-15 | 720-510-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-06-15 | 720-510-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-06-15 | 720-510-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-06-12 | 720-586-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-05-26 | 720-586-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-26 | 720-586-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-23 | 720-263-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-05-23 | 720-571-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CO | 026D | ALLNSPKLYN | CO |
| 2017-05-22 | 720-546-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-22 | 720-572-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-22 | 720-908-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-05-17 | 720-908-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-17 | 720-908-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-05-11 | 720-693-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-04-28 | 720-487-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-04-28 | 720-758-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-759-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-04-28 | 720-759-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-04-28 | 720-759-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-04-28 | 720-996-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-28 | 720-996-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-04-20 | 720-419-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-04-20 | 720-419-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-04-20 | 720-759-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | LONGMONT | CO |
| 2017-04-20 | 720-759-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | LONGMONT | CO |
| 2017-04-17 | 720-693-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-04-04 | 720-631-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 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.