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 |
|---|---|---|---|---|---|---|---|
| 2015-10-20 | 720-749-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-10-15 | 720-646-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF COLORADO, LLC - CO | 4574 | DENVER | CO |
| 2015-10-15 | 720-651-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-10-15 | 720-651-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-10-09 | 720-646-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-646-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-646-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-646-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-646-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-646-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-656-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-656-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-656-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-656-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-09 | 720-656-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-10-05 | 720-696-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | DENVER | CO |
| 2015-10-02 | 720-749-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-10-02 | 720-749-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-10-02 | 720-749-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-10-02 | 720-749-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-10-02 | 720-749-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-10-01 | 720-688-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-10-01 | 720-688-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-30 | 720-820-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-1XXX | 1000–1999 | Assigned | WIDE VOICE, LLC - CO | 557H | DENVER | CO |
| 2015-09-30 | 720-820-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-820-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2015-09-30 | 720-930-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-30 | 720-930-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-30 | 720-930-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-30 | 720-930-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-29 | 720-893-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | ALLNSPKLYN | CO |
| 2015-09-28 | 720-749-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | DENVER | CO |
| 2015-09-28 | 720-835-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-09-28 | 720-930-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2015-09-28 | 720-930-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2015-09-22 | 720-755-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2015-09-22 | 720-755-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2015-09-14 | 720-745-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2015-09-14 | 720-745-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2015-09-11 | 720-688-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-08 | 720-930-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-08 | 720-930-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-09-04 | 720-643-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | 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.