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 |
|---|---|---|---|---|---|---|---|
| 2017-09-08 | 720-603-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-603-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-603-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-603-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-665-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-815-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | LONGMONT | CO |
| 2017-09-08 | 720-845-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-845-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-09-08 | 720-845-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-09-08 | 720-845-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-09-08 | 720-845-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2017-09-08 | 720-845-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-845-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-845-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-08 | 720-845-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2017-09-05 | 720-603-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF COLORADO, LLC - CO | 4574 | DENVER | CO |
| 2017-09-05 | 720-815-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | LONGMONT | CO |
| 2017-09-05 | 720-818-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-09-05 | 720-818-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-09-05 | 720-818-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-09-05 | 720-818-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-09-05 | 720-818-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-09-01 | 720-845-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2017-08-31 | 720-665-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-31 | 720-665-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-08-28 | 720-513-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-28 | 720-513-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-24 | 720-602-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2017-08-21 | 720-650-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2017-08-21 | 720-650-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CO | 026D | 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.