NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-04-02 | 720-438-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CO | 026D | LONGMONT | CO |
| 2007-03-23 | 720-324-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-23 | 720-381-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-23 | 720-381-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-23 | 720-381-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-21 | 720-266-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-266-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-266-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-269-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-468-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-468-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-21 | 720-468-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-03-06 | 720-278-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-05 | 720-300-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-05 | 720-300-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-03-05 | 720-300-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-02-15 | 720-255-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2007-02-09 | 720-385-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-02-09 | 720-385-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-02-09 | 720-385-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2007-02-08 | 720-278-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-02-08 | 720-324-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | DENVER | CO |
| 2007-02-08 | 720-335-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-02-08 | 720-335-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2007-01-17 | 720-670-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2007-01-16 | 720-975-9XXX | 9000–9999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 3467 | DENVER | CO |
| 2006-12-29 | 720-234-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-235-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-236-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-238-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-239-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-252-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-29 | 720-253-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-14 | 720-880-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2006-12-14 | 720-880-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2006-12-14 | 720-881-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-14 | 720-881-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2006-12-11 | 720-229-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-11 | 720-322-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-11 | 720-322-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-11 | 720-322-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-11 | 720-322-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2006-12-08 | 720-746-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2006-12-08 | 720-746-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
| 2006-12-08 | 720-746-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DENVER | CO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.