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 771
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-04-06 | 771-228-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-230-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-04-06 | 771-231-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-0XXX | 0000–0999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-1XXX | 1000–1999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-2XXX | 2000–2999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-3XXX | 3000–3999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-4XXX | 4000–4999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-5XXX | 5000–5999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-6XXX | 6000–6999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-7XXX | 7000–7999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-8XXX | 8000–8999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-324-9XXX | 9000–9999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-0XXX | 0000–0999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-1XXX | 1000–1999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-2XXX | 2000–2999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-3XXX | 3000–3999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-4XXX | 4000–4999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-5XXX | 5000–5999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-6XXX | 6000–6999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-7XXX | 7000–7999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-8XXX | 8000–8999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-325-9XXX | 9000–9999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-0XXX | 0000–0999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-1XXX | 1000–1999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-2XXX | 2000–2999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-3XXX | 3000–3999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-4XXX | 4000–4999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-5XXX | 5000–5999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-6XXX | 6000–6999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-7XXX | 7000–7999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
| 2023-03-24 | 771-326-8XXX | 8000–8999 | Assigned | ONVOY, LLC - DC | 850D | WSHNGTNZN1 | DC |
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.