NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 |
|---|---|---|---|---|---|---|---|
| 2015-06-02 | 720-893-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | ALLNSPKLYN | CO |
| 2015-05-29 | 720-692-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-29 | 720-692-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-29 | 720-692-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-29 | 720-692-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-29 | 720-692-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-29 | 720-692-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-27 | 720-492-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | DENVER | CO |
| 2015-05-21 | 720-709-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-21 | 720-709-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-21 | 720-709-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DENVER | CO |
| 2015-05-20 | 720-709-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | DENVER | CO |
| 2015-05-14 | 720-669-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CO | 026D | HUDSON | CO |
| 2015-05-12 | 720-598-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2015-05-12 | 720-709-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2015-05-12 | 720-893-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | ALLNSPKLYN | CO |
| 2015-05-11 | 720-709-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2015-05-08 | 720-707-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-05-08 | 720-717-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-05-08 | 720-717-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-05-08 | 720-717-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-05-08 | 720-717-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-05-08 | 720-799-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-05-08 | 720-799-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-05-08 | 720-799-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-05-08 | 720-799-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-05-08 | 720-799-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-05-05 | 720-616-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-05-04 | 720-745-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LONGMONT | CO |
| 2015-05-04 | 720-778-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2015-04-28 | 720-616-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2015-04-28 | 720-616-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2015-04-23 | 720-616-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-04-23 | 720-616-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-04-23 | 720-616-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-04-23 | 720-616-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2015-04-22 | 720-707-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2015-04-20 | 720-707-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2015-04-20 | 720-717-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | CO |
| 2015-04-20 | 720-745-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | LONGMONT | CO |
| 2015-04-14 | 720-410-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | DENVER | CO |
| 2015-04-13 | 720-669-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | HUDSON | CO |
| 2015-04-13 | 720-669-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | HUDSON | CO |
| 2015-04-07 | 720-717-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2015-04-06 | 720-966-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | FORTLUPTON | CO |
| 2015-04-02 | 720-799-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | DENVER | CO |
| 2015-04-02 | 720-899-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LONGMONT | CO |
| 2015-03-31 | 720-598-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2015-03-31 | 720-598-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | DENVER | CO |
| 2015-03-31 | 720-778-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | DENVER | CO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.