Well, here goes nothing...going to speedguide.net and with this address info, the ip address is allocated for Merck and co. in Woodbridge, N.J. With that said, attempted to do a trace route, and came up with this:
traceroute to 54.149.18.169 (54.149.18.169), 30 hops max, 60 byte packets:
1 68-67-73-17.static.as19844.net (68.67.73.17) 0.275 ms 0.316 ms 0.401 ms
2 ve103.e2-13.core-b.jcvnflcq.as19844.net (198.205.127.13) 4.692 ms 4.729 ms 4.785 ms
3 64.125.193.61.available.above.net (64.125.193.61) 6.183 ms 6.188 ms 6.180 ms
4 ae4.mpr4.atl6.us.zip.zayo.com (64.125.31.198) 6.818 ms 6.382 ms 6.413 ms
5 ae2.cr1.dca2.us.zip.zayo.com (64.125.25.45) 17.290 ms 17.301 ms 17.345 ms
6 ae6.er1.iad10.us.zip.zayo.com (64.125.20.118) 18.194 ms 18.271 ms 18.208 ms
7 ae9.er5.iad10.us.zip.zayo.com (64.125.31.142) 18.001 ms 18.005 ms 17.996 ms
8 zayo-amazon.iad10.us.zip.zayo.com (64.125.12.30) 18.126 ms 18.082 ms 18.091 ms
9 72.21.220.17 (72.21.220.17) 75.952 ms 75.907 ms 205.251.244.9 (205.251.244.9) 76.522 ms
10 205.251.245.137 (205.251.245.137) 76.166 ms 76.128 ms 76.134 ms
11 54.239.41.23 (54.239.41.23) 75.767 ms 54.239.41.27 (54.239.41.27) 76.873 ms 54.239.41.29 (54.239.41.29) 75.762 ms
12 205.251.232.209 (205.251.232.209) 77.275 ms 205.251.232.203 (205.251.232.203) 76.599 ms 205.251.232.197 (205.251.232.197)
76.280 ms
13 205.251.232.61 (205.251.232.61) 79.247 ms 79.540 ms 77.304 ms
14 * * *
...not much to say except for more addresses...!
Furthurmore, wont paste, but can find other neat stuff concerning this address/s using same site, and going to Related tools at the near bottom of page, clicking on Network Tools, clicking every box in the Host Info and Connectivity on top of page using addx 54.149.18.169, and voila...Amazon Technologies Inc. ... for the OrgName. Not the Amazon I was expecting for shopping! Something to research in a bit, but first why it took to ping the addrx 4 seconds (4000 ms) from Wash, D.C.?? Nothing about Firefox yet except for the popup avast put on all my screens about 20-30 times. After confirming, or better yet, understanding a good possibility of a false positive by Reading alot of shtuff...or getting sick of the warning, the next step is to silence the popup, which is not the brightest thing I've ever done...
To silence popup, since I believe it is a false positive, I went to avast User Interface by right clicking notification area avast icon:
-clicked Settings
-clicked Exclusions
-clicked URLs tab and
-entered (without quotes) "
https://54.149.18.169:443/1.0/sync/1.5*" on the
(enter address) bar, and made a note of it on my monitor to keep it in mind of the exclusion temporarily while avast! and co. works on the true meaning of the action/s.
Hope this works for all.
Avast moderators can contact me anytime. You've got my email addx.