Suddenly, I cannot access one website. I can't access it from Safari on my Mac, nor iPad, nor iPhone. When offsite, I can access it from my phone via cell service. I tried to access via Firefox on my Mac as well as Safari. The site is fine according to the owner. I have deleted cookies, deleted the cache from this site, cleared my history, etc on each device. Still cannot access one important website from my apple products.
In that case it is possible your Internet service provider is unable to resolve an address for that website. In simple terms, that means doesn't know to deliver the website you are asking it to deliver. That in itself is something you cannot fix.
Assuming that is in fact the problem, the following excerpt from Specify a DNS server on Mac - Apple Support explains it (emphasis added):
"If you get a message such as "server not found" when you try to visit a website, your computer may be unable to contact a DNS server. If you selected a DNS server manually, you may have entered the wrong DNS server address, or your DNS server may be having problems."
It also suggests a solution, which is to specify a different DNS address than what your ISP is using. For a list of public DNS Servers, try this: https://duckduckgo.com/?q=free+dns+servers&t=brave&ia=answer&iax=answer
Try the first suggestions in the list: 1.1.1.1 and 1.0.0.1 for no other reason that those numbers are easy to remember, and to type.
In that case it is possible your Internet service provider is unable to resolve an address for that website. In simple terms, that means doesn't know to deliver the website you are asking it to deliver. That in itself is something you cannot fix.
Assuming that is in fact the problem, the following excerpt from Specify a DNS server on Mac - Apple Support explains it (emphasis added):
"If you get a message such as "server not found" when you try to visit a website, your computer may be unable to contact a DNS server. If you selected a DNS server manually, you may have entered the wrong DNS server address, or your DNS server may be having problems."
It also suggests a solution, which is to specify a different DNS address than what your ISP is using. For a list of public DNS Servers, try this: https://duckduckgo.com/?q=free+dns+servers&t=brave&ia=answer&iax=answer
Try the first suggestions in the list: 1.1.1.1 and 1.0.0.1 for no other reason that those numbers are easy to remember, and to type.
Given everything you did, the common factor appears to be your ISP or the equipment used to communicate with it.
The only component likely to be under your control is your router. Try resetting it.
Reset router and also unplugged modem. Everything works except this one website.
Cannot access website
