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 351
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-03 | 351-345-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HUDSON | MA |
| 2021-12-29 | 351-228-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ANDOVER | MA |
| 2021-12-29 | 351-234-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HAVERHILL | MA |
| 2021-11-04 | 351-221-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | LOWELL | MA |
| 2021-09-08 | 351-353-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HAVERHILL | MA |
| 2021-06-14 | 351-322-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | LOWELL | MA |
| 2020-10-12 | 351-800-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | WINCHENDON | MA |
| 2020-05-26 | 351-208-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | LOWELL | MA |
| 2020-04-28 | 351-215-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HAVERHILL | MA |
| 2020-02-18 | 351-208-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | LOWELL | MA |
| 2018-10-01 | 351-208-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | LOWELL | MA |
| 2016-07-11 | 351-777-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HUBBARDSTN | MA |
| 2015-04-30 | 351-777-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | HUBBARDSTN | MA |
| 2013-01-09 | 351-206-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ROCKPORT | MA |
| 2013-01-09 | 351-206-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ROCKPORT | MA |
| 2013-01-09 | 351-206-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ROCKPORT | MA |
| 2013-01-09 | 351-206-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ROCKPORT | MA |
| 2013-01-09 | 351-206-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | ROCKPORT | MA |
| 2013-01-03 | 351-202-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2013-01-03 | 351-202-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2013-01-03 | 351-202-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-202-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | PEPPERELL | MA |
| 2012-08-31 | 351-205-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
| 2012-08-31 | 351-205-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | GEORGETOWN | MA |
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.