NumberResearchRecent thousands-block assignments
17 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, 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 |
|---|---|---|---|---|---|---|---|
| 2025-01-15 | 443-893-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2025-01-14 | 443-303-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ABERDEEN | MD |
| 2025-01-08 | 443-229-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | SEVERNA PK | MD |
| 2025-01-08 | 443-551-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2025-01-08 | 443-551-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2025-01-03 | 443-966-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FALLSTON | MD |
| 2024-12-31 | 443-667-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | DELMAR | MD |
| 2024-12-27 | 443-393-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-393-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-505-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ESSEX | MD |
| 2024-12-27 | 443-656-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-27 | 443-656-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | COLUMBIA | MD |
| 2024-12-20 | 443-550-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | NORTHBEACH | MD |
| 2024-12-19 | 443-388-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-740-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-932-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-948-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-948-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-963-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-19 | 443-965-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-12-13 | 443-312-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BRYNPKLNCM | MD |
| 2024-12-13 | 443-957-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-12-13 | 443-957-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-12-05 | 443-519-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | TOWSON | MD |
| 2024-12-05 | 443-834-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | TOWSON | MD |
| 2024-12-03 | 443-951-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANNAPOLIS | MD |
| 2024-12-03 | 443-957-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALTIMORE | MD |
| 2024-11-20 | 443-590-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | REISTERSTN | MD |
| 2024-11-12 | 443-307-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | BEL AIR | MD |
| 2024-11-08 | 443-296-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WATERLO238 | MD |
| 2024-11-08 | 443-316-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-11-08 | 443-316-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-11-06 | 443-501-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-10-31 | 443-693-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | PERRYVILLE | MD |
| 2024-10-30 | 443-685-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERN | MD |
| 2024-10-21 | 443-830-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | CATONSVL | MD |
| 2024-10-16 | 443-218-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WORTHINGTN | MD |
| 2024-10-15 | 443-312-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BRYNPKLNCM | MD |
| 2024-10-15 | 443-405-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | RANDALLSTN | MD |
| 2024-10-11 | 443-652-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | TOWSON | MD |
| 2024-10-04 | 443-549-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | DUNDALK | MD |
| 2024-09-27 | 443-399-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | DUNDALK | MD |
| 2024-09-27 | 443-399-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | DUNDALK | MD |
| 2024-09-27 | 443-551-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-09-27 | 443-551-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-09-26 | 443-973-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELLICOTTCY | MD |
| 2024-09-24 | 443-740-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BALTIMORE | MD |
| 2024-09-24 | 443-869-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BALTIMORE | MD |
| 2024-09-24 | 443-890-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BALTIMORE | MD |
| 2024-09-24 | 443-916-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BALTIMORE | MD |
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.