This isn’t entirely the whole story. Every ISP oversubscribes. OP is correct. Overprovision is a different thing. You are talking about getting 680 so that wh

This isn’t entirely the whole story. Every ISP oversubscribes. OP is correct. Overprovision is a different thing. You are talking about getting 680 so that when you speedtest, you have NOTHING to complain about to them. This is basically part of their boost and oversub plan, where it isn’t hurting them so they toss you a bone to preempt speed complaints. What you aren’t told is that Spectrum also does short term speed boosting. For 30S-1min you’ll get 680, but it will fall in PRIORITY after that. This also conveniently helps speed tests. At 3am, you’ll get a solid 680 real world. At 6pm, you’re more likely to get a sustained 680 for a bit, then fall to 400 or so. You need a transfer at max speed to show this. Newsgroups are good for maxing a connection and showing the fall-off decline of a boosted connection. Spectrum only started this in my area a year ago or so. After an initially great move to DOCSIS 3.1. Oversubscribing means that if Spectrum has 2TB of bandwidth, they’ll sell 3TB knowing that all their customers won’t concurrently use it. It would be a statistically unlikelihood. TRUST ME, they do the math on this. If you add all the 600Mbps users up, you’ll get to a number they can not possibly support. This is OK. What the issue that Frontier seems to be in trouble with is they went way too far, and couldn’t hit the base numbers they were offering. But YES, every ISP out there I ever felt with while in telecom does in fact oversubscribe.