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 |
|---|---|---|---|---|---|---|---|
| 2017-01-18 | 720-534-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-01-18 | 720-534-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-01-18 | 720-534-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-01-18 | 720-534-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-01-18 | 720-534-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2017-01-12 | 720-693-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-12 | 720-693-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-10 | 720-788-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2017-01-06 | 720-669-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CO | 026D | HUDSON | CO |
| 2017-01-06 | 720-735-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | KEENESBURG | CO |
| 2017-01-04 | 720-534-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-01-04 | 720-534-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2017-01-04 | 720-534-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | LONGMONT | CO |
| 2016-12-27 | 720-595-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2016-12-21 | 720-572-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2016-12-21 | 720-572-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2016-12-21 | 720-572-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2016-12-21 | 720-597-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2016-12-20 | 720-718-0XXX | 0000–0999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-1XXX | 1000–1999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-718-9XXX | 9000–9999 | Assigned | QWEST CORPORATION | 9636 | LONGMONT | CO |
| 2016-12-20 | 720-758-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2016-12-20 | 720-758-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2016-12-20 | 720-758-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2016-12-16 | 720-572-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2016-12-14 | 720-453-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LONGMONT | CO |
| 2016-12-14 | 720-572-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | DENVER | CO |
| 2016-12-13 | 720-592-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2016-12-13 | 720-592-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | 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.