Cannot access certain websites

​I recently signed up with xfinity and i notice I can no longer access certain sites. ...

What happens exactly when you try? What are the sites? Any error messages or codes? What browser, program, or app are you using? On what kind of computer or mobile device? The more details you can provide, the better.

What does a trace to one of the sites show? If you were using Windows and having trouble reaching "Xfinity.com", you'd open a Command Prompt window, enter

    tracert -4 Xfinity.com

and post the results.

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Im trying on apple devices so an iphone, an ipad and a mac. The sites just refuse to load and the error message says that the servers stopped responding.

The error happens on all kind of sites :news sites,this forum page doesnt even load. i have to use my phones internet

I tried a traceroute for xfinity for example which doesnt load and this is what i got

 

Sylvias-Macbook:~ sylvia$ traceroute xfinity.com

traceroute: Warning: xfinity.com has multiple addresses; using 96.114.21.40

traceroute to xfinity.com (96.114.21.40), 64 hops max, 52 byte packets

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traceroute to xfinity.com (96.114.21.40), 64 hops max, 52 byte packets

 1* * *

Not good! I should have asked before: what are the model numbers of your modem and router, or modem/router gateway? You might try unplugging the equipment for a minute or so. If that doesn't help that equipment might be failing, or there might be a problem with the link between that equipment and Comcast's network. Network connection problems are often due to poor coax connections or damaged coax cable, usually in or near your home. Running the cable through a surge protector, a defective splitter, or too many splitters can cause signal problems as well. If there is an amplifier in the line make sure it's getting power. 

If you want to troubleshoot this yourself, please see Internet Troubleshooting Tips. If you still need help, please post your Internet plan speed and the following information from your modem or gateway (from http://192.168.100.1 or http://10.0.0.1):

• model number
• downstream: power levels, SNR, and error counts
• upstream: power levels
• event log, if available (Be sure to remove or blot out any MAC addresses. Forum security processing considers them "personal information" and may prevent the event log from posting if these are present.)

If you can't find the problem or you'd rather have Comcast take care of it, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. It's not likely they can fix the problem remotely. If not, insist they send a tech out to identify the cause and correct it.

If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit ($70-$100) unless you have their Service Protection Plan ( https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device or anything outside your home you shouldn't be charged.

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.