Unable to reach duckduckgo.com for past day

[prove]

Tracert fails.  Please advise.

Tracing route to duckduckgo.com [40.89.244.232]
over a maximum of 30 hops:

1 2 ms 11 ms 3 ms fw.workgroup [192.168.0.1]
2 20 ms 12 ms 36 ms 96.120.26.5
3 19 ms 38 ms 22 ms 69.139.184.81
4 30 ms 18 ms 22 ms be-165-ar01.area4.il.chicago.comcast.net [69.139.203.185]
5 31 ms 21 ms 26 ms be-32231-cs03.350ecermak.il.ibone.comcast.net [96.110.40.57]
6 33 ms 33 ms 40 ms be-2304-pe04.350ecermak.il.ibone.comcast.net [96.110.37.42]
7 20 ms 20 ms 17 ms 96-87-9-38-static.hfc.comcastbusiness.net [96.87.9.38]
8 41 ms 36 ms 37 ms ae30-0.icr01.ch2.ntwk.msn.net [104.44.237.17]
9 42 ms 44 ms 46 ms be-100-0.ibr01.ch2.ntwk.msn.net [104.44.11.252]
10 49 ms 44 ms 54 ms be-7-0.ibr01.dsm05.ntwk.msn.net [104.44.19.251]
11 27 ms 21 ms 28 ms ae140-0.icr01.dsm05.ntwk.msn.net [104.44.22.178]
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.

Trace complete.

[BruceW]

Your trace reaches well beyond Comcast's network on into Microsoft's. Routers and servers are often configured to reject ping and trace packets, so what you're seeing is not unusual. See https://www.dslreports.com/faq/14068

I can reach duckduckgo.com. When one customer cannot reach a site but others can, it usually means the site is blocking that customer's public Comcast IP. You can look up your IP at https://www.google.com/search?q=what+is+my+IP. You'll probably need to ask the site's admins for help with this.