NumberResearchThousands-blocks in 315-274
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 315-274 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 315 blocks
Most active assignees, all time — NPA 315
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 |
|---|---|---|---|---|---|---|---|
| 2010-07-06 | 315-274-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | POTSDAM | NY |
| 2010-09-14 | 315-274-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | POTSDAM | NY |
| 2014-05-28 | 315-274-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | POTSDAM | NY |
| 2011-10-24 | 315-274-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | POTSDAM | NY |
| 2015-01-26 | 315-274-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | POTSDAM | NY |
| 2015-09-03 | 315-274-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | POTSDAM | NY |
| 2019-08-09 | 315-274-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | POTSDAM | NY |
| 2014-10-16 | 315-274-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | POTSDAM | NY |
| 2015-09-04 | 315-274-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | POTSDAM | NY |
| 2004-09-21 | 315-274-9XXX | 9000–9999 | Assigned | SLIC NETWORK SOLUTIONS, INC. - NY | 193C | POTSDAM | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.