It seems ever since my laptop updated to Windows 11, I get this error for trying to access Costco or Lego.

Why do I keep getting this error message when I try to log in to my email account on Xfinity it started the last week of Aug. :

                                                                                                                                                                You don't have permission to access "http://login.xfinity.com/login" on this server.

Reference #18.901ddf17.1725558103.5a4c72c

https://errors.edgesuite.net/18.901ddf17.1725558103.5a4c72c.

You don't have permission to access "http://www.costco.com/" on this server.

Reference #18.47a7cb17.1712489203.8d44a102

https://errors.edgesuite.net/18.47a7cb17.1712489203.8d44a102

It is driving me crazy and tempted to get a new laptop since it is over 4 years old.

This issue is occurring on several websites, including mine ihatecbts , so it doesn't seem to be isolated to just one site.

Check this VERY interesting threads/posts!

https://community.spiceworks.com/t/akamai-blocked-me/680758 https://community.spiceworks.com/t/we-are-getting-blocked-from-websites/463027

I dug a bit further following takabanana's input. I ended up with an "No registry was found for this FQDN" error from one DNS site. Could others try the same thing and see if you get the same results? Not sure whether to Microsoft or Xfinity (owned by Comcast) has the issue.

1. I have Xfinity. I called them and tried to get them to change the IP Address. The would not. I have my own NetGear Cable Modem.
2. I turned off my cable modem for more than 24 hours.
3. The IP Address did change, but problem continues.
4. I checked the blacklist sites again

• https://whatismyipaddress.com/blacklist-check  NO ISSUES
• https://dnschecker.org/ip-blacklist-checker.php  ONE ISSUE flagged (see below) The 2nd one had one site flagged. Same issue flagged yesterday with a different IP Address.

a) Details of the flagged site using the (https://dnschecker.org/ip-blacklist-checker.php) site

b) I then clicked on the Details and here is what came up leaving off the IP Address

c) Then when to https://Matrix.sbfbl.net/<ipaddress> and here is what I got.

                                       New query

Check result of IP
<ipaddress>This is the rDNS found:

• <https://matrix.spfbl.net/c-<ipaddress>.hsd1.nh.comcast.net> generic rDNS.

No Generic rDNS will be accepted to name email servers.Register a valid rDNS for this IP, which points to the same IP. The rDNS must be registered under your own domain for you be able to delist it.

d) I then clicked on the c-<ipaddress>.hsd1.nh.comcast.net and got

                                                   New query

Check the result of domain
c-<ipaddress>.hsd1.nh.comcast.netNo registry was found for this FQDN.

UPS started doing this today for me as well started a couple of hours ago.