NumberResearchRecent thousands-block assignments
17 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, last 30 days — NPA 443
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-04-30 | 443-806-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-29 | 443-639-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | HAMPSTEAD | MD |
| 2024-04-25 | 443-957-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALTIMORE | MD |
| 2024-04-17 | 443-551-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-04-17 | 443-726-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-04-17 | 443-726-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-04-15 | 443-726-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BALTIMORE | MD |
| 2024-04-15 | 443-740-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BALTIMORE | MD |
| 2024-04-09 | 443-225-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | CAMBRIDGE | MD |
| 2024-04-09 | 443-381-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MD | 876D | REISTERSTN | MD |
| 2024-03-28 | 443-441-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | GLENWOOD | MD |
| 2024-03-27 | 443-225-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMBRIDGE | MD |
| 2024-03-26 | 443-375-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | HAMPSTEAD | MD |
| 2024-03-21 | 443-348-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-03-21 | 443-363-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | SEVERN | MD |
| 2024-03-21 | 443-363-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | SEVERN | MD |
| 2024-03-21 | 443-363-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | SEVERN | MD |
| 2024-03-20 | 443-443-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | ARBUTUS | MD |
| 2024-03-19 | 443-282-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | CHESTERTN | MD |
| 2024-03-19 | 443-667-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | DELMAR | MD |
| 2024-03-19 | 443-726-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-03-15 | 443-573-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-03-15 | 443-580-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-03-15 | 443-723-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-03-15 | 443-723-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-03-15 | 443-723-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-03-13 | 443-796-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-03-13 | 443-796-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-03-06 | 443-205-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MD | 876D | CAMBRIDGE | MD |
| 2024-03-06 | 443-563-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-03-06 | 443-563-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-03-06 | 443-563-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-03-05 | 443-978-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | SALISBURY | MD |
| 2024-02-22 | 443-516-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | SYKESVILLE | MD |
| 2024-02-20 | 443-213-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-02-20 | 443-213-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-02-09 | 443-381-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | REISTERSTN | MD |
| 2024-02-09 | 443-493-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | DELMAR | MD |
| 2024-02-08 | 443-238-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | PARKTON | MD |
| 2024-02-08 | 443-249-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | STEVENSVL | MD |
| 2024-02-08 | 443-291-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | HAMPSTEAD | MD |
| 2024-02-08 | 443-348-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-02-08 | 443-443-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | ARBUTUS | MD |
| 2024-02-06 | 443-331-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | TANEYTOWN | MD |
| 2024-02-06 | 443-332-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | CROFTON | MD |
| 2024-02-06 | 443-419-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | GLENWOOD | MD |
| 2024-02-06 | 443-731-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | PT DEPOSIT | MD |
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.