All Comcast users use 18.104.22.168 and 22.214.171.124 as their DNS. These servers don't seem to recognize our domain name and it's records. All other DNS providers in world work fine. Please see below proof.
Hello, how are you? I hope outside of this internet issue your day is going well. I am sorry you are experiencing DNS server issues and a connectivity issue on your network. I know this must be a huge concern. Are you able to send over some account information in a private message so I can assist you further? To start working on your account may I please capture your first and last name, your account number (or phone number), and your full-service address?
Apparently it was a known issue between Comcast and Register.com registered domains. I could never get Tier-2 support from Comcast on phone after spending 4-5 hours with tier-1 who wanted to keep blaming on my modem. I finally called Register.com and they said it was a known issue since yesterday and Comcast was working on it. It looks like as of 5:05CST, it is working now but I will have to wait till DNS cache flush. My TTL was set to 8 hours so have to wait on cache expiration time.
Same exact dig command that times out before is working now. Thank you for your offer to help.
I am glad it's currently working, and I apologize for the trouble. If this issue resurfaces or if you experience similar trouble we can collaborate with our advanced repair team to address the concern accurately. Thank you very much for all your time and patience. Do all you can to have a great day.