NumberResearchThousands-blocks in 724-310
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 724-310 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 724 blocks
Most active assignees, all time — NPA 724
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 724-310-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | MONONGAHLA | PA |
| 2002-09-27 | 724-310-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | MONONGAHLA | PA |
| — | 724-310-2XXX | 2000–2999 | Reserved | COMCAST IP PHONE, LLC | 318J | MONONGAHLA | PA |
| — | 724-310-3XXX | 3000–3999 | Reserved | COMCAST IP PHONE, LLC | 318J | MONONGAHLA | PA |
| 2019-09-25 | 724-310-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MONONGAHLA | PA |
| 2025-05-12 | 724-310-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | MONONGAHLA | PA |
| 2024-01-09 | 724-310-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONONGAHLA | PA |
| 2015-05-19 | 724-310-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONONGAHLA | PA |
| 2017-07-25 | 724-310-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | MONONGAHLA | PA |
| 2017-12-12 | 724-310-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MONONGAHLA | 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.