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 856
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-05-01 | 856-204-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | VINELAND | NJ |
| 2020-05-01 | 856-204-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | VINELAND | NJ |
| 2020-05-01 | 856-314-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | RIVERTON | NJ |
| 2020-05-01 | 856-360-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MOORESTOWN | NJ |
| 2020-05-01 | 856-406-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MERCHANTVL | NJ |
| 2020-05-01 | 856-415-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | WENONAH | NJ |
| 2020-05-01 | 856-444-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MOORESTOWN | NJ |
| 2020-05-01 | 856-539-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | WENONAH | NJ |
| 2020-05-01 | 856-544-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RIVERSIDE | NJ |
| 2020-05-01 | 856-568-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LAUREL SPG | NJ |
| 2020-05-01 | 856-635-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | CAMDEN | NJ |
| 2020-05-01 | 856-675-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MERCHANTVL | NJ |
| 2020-05-01 | 856-679-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LAUREL SPG | NJ |
| 2020-05-01 | 856-705-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RIVERSIDE | NJ |
| 2020-05-01 | 856-733-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RIVERTON | NJ |
| 2020-05-01 | 856-807-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CAMDEN | NJ |
| 2020-05-01 | 856-830-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MARLTON | NJ |
| 2020-05-01 | 856-830-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MARLTON | NJ |
| 2020-05-01 | 856-843-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HADDONFLD | NJ |
| 2020-05-01 | 856-843-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HADDONFLD | NJ |
| 2019-04-17 | 856-574-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MARLTON | NJ |
| 2019-04-17 | 856-733-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RIVERTON | NJ |
| 2017-06-19 | 856-259-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WILLIAMSTN | NJ |
| 2016-04-07 | 856-212-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | VINELAND | NJ |
| 2016-04-07 | 856-272-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WOODBURY | NJ |
| 2016-04-07 | 856-272-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WOODBURY | NJ |
| 2016-04-07 | 856-372-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MOORESTOWN | NJ |
| 2016-04-07 | 856-402-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BEAVER BRK | NJ |
| 2016-04-07 | 856-406-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MERCHANTVL | NJ |
| 2016-04-07 | 856-427-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HADDONFLD | NJ |
| 2016-04-07 | 856-519-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CAMDEN | NJ |
| 2016-04-07 | 856-568-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LAUREL SPG | NJ |
| 2016-04-07 | 856-574-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MARLTON | NJ |
| 2016-04-07 | 856-677-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BLACKWOOD | NJ |
| 2016-04-07 | 856-681-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | WENONAH | NJ |
| 2016-04-07 | 856-733-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RIVERTON | NJ |
| 2016-04-07 | 856-898-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RIVERSIDE | NJ |
| 2015-10-14 | 856-249-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CAMDEN | NJ |
| 2015-10-14 | 856-319-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BRIDGETON | NJ |
| 2015-10-14 | 856-322-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BERLIN | NJ |
| 2015-10-14 | 856-440-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MILLVILLE | NJ |
| 2015-10-14 | 856-474-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | GLOUCESTER | NJ |
| 2015-10-14 | 856-539-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WENONAH | NJ |
| 2015-10-14 | 856-543-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | RIVERTON | NJ |
| 2015-10-14 | 856-595-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GLASSBORO | NJ |
| 2015-10-14 | 856-671-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | COLLINGSWD | NJ |
| 2015-10-14 | 856-716-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PITMAN | NJ |
| 2015-10-14 | 856-739-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HADDON HTS | NJ |
| 2015-02-23 | 856-319-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | BRIDGETON | NJ |
| 2015-02-23 | 856-440-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MILLVILLE | NJ |
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.