NumberResearchThousands-blocks in 215-274
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 215-274 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 215 blocks
Most active assignees, all time — NPA 215
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-01-14 | 215-274-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | PHPHSBZN33 | PA |
| — | 215-274-1XXX | 1000–1999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | PHPHSBZN33 | PA |
| — | 215-274-2XXX | 2000–2999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7309 | PHPHSBZN33 | PA |
| 2016-04-26 | 215-274-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | PHPHSBZN33 | PA |
| 2018-10-15 | 215-274-4XXX | 4000–4999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PHPHSBZN33 | PA |
| 2009-01-30 | 215-274-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - PA | 283E | PHPHSBZN33 | PA |
| 2016-04-26 | 215-274-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | PHPHSBZN33 | PA |
| 2018-10-15 | 215-274-7XXX | 7000–7999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PHPHSBZN33 | PA |
| 2018-10-15 | 215-274-8XXX | 8000–8999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PHPHSBZN33 | PA |
| 2013-07-30 | 215-274-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN33 | PA |
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.