Network routinely loses connection to CMTS and broader Internet
(cross posting from https://community.spectrum.net/discussion/179032/network-routinely-loses-connection-to-cmts-and-broader-internet#latest in the hopes of getting visibility with Spectrum reps)
I've been troubleshooting my Internet for what feels like forever and I'm not sure what to do next. I am a pretty technically-minded computer engineer so my troubleshooting has gone above just restarting my router and modem (although that's certainly what I've done multiple times). Hoping a Spectrum rep can take a look at this (or maybe it's worth flagging with this customer support again).
I've been dealing with losing Internet connection intermittently for months now - typically somewhere between 10 to 60 seconds, but sometimes for minutes or longer. My router is a Ubiquiti UDR7 which is basically brand new (purchased in December of 2025). I replaced my Spectrum modem with a brand new one on 2/26/26 after my old modem showed a red ring, and had a Spectrum technician come to my house on 3/7/26 to reterminate all of the cables in the signal chain (the coax from my modem to my house's main cable drop panel, the coaxes in the cable drop panel, and the cables in the service box that runs to the street) and I am still seeing my internet drop out regularly.
Using my laptop to run traceroute 8.8.8.8, the first hop out of my network is to 142.254.177.93 which resolves as int-1.hnbjcaeo05m.netops.charter.com. I've set up Uptime Kuma on my home server (wired to my router via Ethernet) to monitor the following connections by pinging these IP addresses 60 seconds:
- My router (192.168.X.1)
- My Spectrum-issued modem (192.168.100.1)
- The first hop out of my network(142.254.177.93)
- Cloudflare DNS (1.1.1.1)
- Google DNS (8.8.8.8)
I have logs showing daily that 142.254.177.93, 1.1.1.1, and 8.8.8.8 all stop responding to ping at the same time, but my router and modem have 100% uptime since beginning to monitor these IPs. 142.254.177.93 not responding to ping is significant because this is the first hop out of my network, so any traffic getting dropped here obviously won't make it to the final destination.
I'm hoping someone from Spectrum can take a look, is it possible that equipment on Spectrum's end is malfunctioning? With a technician coming out to my house to reterminate all of the cables and a brand new modem + router, I'm at a loss as to how to troubleshoot my issue further.