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 |
|---|---|---|---|---|---|---|---|
| 2024-09-16 | 443-302-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CROFTON | MD |
| 2024-09-16 | 443-304-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ARBUTUS | MD |
| 2024-09-16 | 443-396-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ODENTON | MD |
| 2024-09-16 | 443-706-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CRISFIELD | MD |
| 2024-09-03 | 443-501-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-08-22 | 443-586-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | DUNDALK | MD |
| 2024-08-15 | 443-971-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TANEYTOWN | MD |
| 2024-08-14 | 443-238-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PARKTON | MD |
| 2024-08-14 | 443-266-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GLENWOOD | MD |
| 2024-08-14 | 443-298-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTON | MD |
| 2024-08-14 | 443-508-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HAMPSTEAD | MD |
| 2024-08-14 | 443-581-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHASE | MD |
| 2024-08-14 | 443-715-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NORTH EAST | MD |
| 2024-08-14 | 443-981-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FALLSTON | MD |
| 2024-08-13 | 443-663-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WOODLAWN | MD |
| 2024-08-13 | 443-696-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DUNDALK | MD |
| 2024-08-13 | 443-917-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | COLUMBIA | MD |
| 2024-07-30 | 443-836-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-839-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-869-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-30 | 443-869-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-07-23 | 443-714-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | ANNAPOLIS | MD |
| 2024-07-15 | 443-551-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WOODLAWN | MD |
| 2024-07-03 | 443-586-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | DUNDALK | MD |
| 2024-06-28 | 443-299-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FALLSTON | MD |
| 2024-06-26 | 443-940-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2024-06-21 | 443-298-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | EASTON | MD |
| 2024-06-21 | 443-373-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | OCEAN CITY | MD |
| 2024-06-21 | 443-443-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | ARBUTUS | MD |
| 2024-06-21 | 443-443-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | ARBUTUS | MD |
| 2024-06-21 | 443-589-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | COCKEYSVL | MD |
| 2024-06-18 | 443-782-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | ANNAPOLIS | MD |
| 2024-06-18 | 443-905-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | ANNAPOLIS | MD |
| 2024-06-18 | 443-909-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-06-18 | 443-909-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-06-18 | 443-909-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-06-18 | 443-909-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-06-18 | 443-909-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-06-11 | 443-551-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | WOODLAWN | MD |
| 2024-05-30 | 443-779-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ABERDEEN | MD |
| 2024-05-30 | 443-806-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-05-30 | 443-806-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-05-30 | 443-806-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2024-05-29 | 443-203-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WEST RIVER | MD |
| 2024-05-29 | 443-408-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SPARROWSPT | MD |
| 2024-05-21 | 443-597-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SEVERNA PK | MD |
| 2024-05-14 | 443-258-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | EASTON | MD |
| 2024-05-07 | 443-667-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | DELMAR | MD |
| 2024-04-30 | 443-806-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | MD |
| 2024-04-30 | 443-806-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BALTIMORE | 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.