I have a customer who is experiencing slow online service with Comcast. I have done the basic cleaning eliminating junk files, malware, etc without success. Rebooted the router, changed internet channels, etc. with now success. Since they are connected wirelessly I ran a speed test with Speakeasy. The test defaulted to the Miami NOC where the download speed was ridiculous at 15mbs however when I switched to a different NOC she was getting the speed that she was paying for which was 60-80 mbs and higher. I did this with a different speed test provider as well which showed the same disparity. The only one that showed a fast download time was Comcast's own speed test which of course I expected because in 10 years I have never seen a slow speed using Comcast's tests.
I hooked her up directly to the router with Ethernet and while the speeds were obviously better I received the same differences from various NOCS. Miami low, Atlanta, New York and California high.
My question is this. Does Comcast or for that matter any provider determine which NOC a router goes to by default or is it configurable somehow within the browser?
Or better yet, what am I missing here?
Any help on the subject will help me before I contact Comcast support for her which I'm reluctant to do until I get more information. I'm sure that they will run their test and say everything is OK and it isn't. Thank you very much for any help anyone can provide.