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 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 |
|---|---|---|---|---|---|---|---|
| 2026-08-19 | 443-313-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FORK | MD |
| 2026-08-19 | 443-587-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2026-08-19 | 443-728-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERLIN | MD |
| 2026-06-10 | 443-404-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SOLOMONS | MD |
| 2026-06-10 | 443-581-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHASE | MD |
| 2025-12-11 | 443-298-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTON | MD |
| 2025-12-11 | 443-587-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2025-12-11 | 443-971-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TANEYTOWN | MD |
| 2025-12-11 | 443-981-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FALLSTON | MD |
| 2025-09-12 | 443-494-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILLERSVL | MD |
| 2025-07-03 | 443-502-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HAVREGRACE | MD |
| 2025-07-01 | 443-706-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CRISFIELD | MD |
| 2025-04-30 | 443-315-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CATONSVL | MD |
| 2025-04-30 | 443-598-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SHERWD FOR | MD |
| 2025-04-08 | 443-298-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTON | MD |
| 2025-04-08 | 443-313-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FORK | MD |
| 2025-04-08 | 443-490-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2025-04-08 | 443-971-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TANEYTOWN | MD |
| 2025-03-10 | 443-212-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SPARKSGLNC | MD |
| 2025-01-14 | 443-303-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ABERDEEN | 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 |
| 2024-10-16 | 443-218-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WORTHINGTN | MD |
| 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 |
| 2024-08-15 | 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 |
| 2024-05-30 | 443-779-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ABERDEEN | 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 |
| 2024-04-25 | 443-957-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALTIMORE | MD |
| 2024-03-27 | 443-225-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMBRIDGE | MD |
| 2024-01-17 | 443-298-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTON | MD |
| 2024-01-17 | 443-507-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HAMPSTEAD | MD |
| 2024-01-17 | 443-698-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ODENTON | MD |
| 2024-01-17 | 443-706-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CRISFIELD | MD |
| 2024-01-17 | 443-998-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PARKVILLE | MD |
| 2024-01-16 | 443-587-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGEWOOD | MD |
| 2024-01-16 | 443-969-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ESSEX | 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.