My computers find a DNS server at 192.168.2.1 (the IP of the router, my modem has 192.168.1.1). When I dig google.com it lists the ASUS router as server:
;; SERVER: 192.168.2.1#53(192.168.2.1)
The router itself probably forwards the request to the modem which then asks some other server^^
@ISP: Drei
German cableā¦ mm eurodocsis ā¦ Anyways european cable companies are not as notorious as US. We can safely rule out your DNS provider. Okay go into your firmware and turn off using the routers address as your provider or alternatively manually set 8.8.8.8/8.8.4.4 as your dns server on your testing system and see if it fixes the resolve problem
So, I edited my resolv.conf and performed a dig, which returned the server set (SERVER: 8.8.8.8#53(8.8.8.8)). But the issue of me not being able to properly connect to Amazon remains 
Stupid question but do you have any sort of VPN enabled? That can interfere with your look up via a DNS interceptā¦ that doesnt always show up in DIG
Not entirely stupid since Iām normally using a VPN, but no, I have not 
Interestingly enough, the problem persists when Iām using VPNā¦
Perhaps the amazon.de isnt public facing but rather behind amazons nat?
hmm I get thisā¦ IDk whats upā¦
[email protected] (Default): [Copy results to clipboard]
amazon.de. 9 IN A 54.239.39.102
amazon.de. 9 IN A 52.95.120.34
amazon.de. 9 IN A 176.32.108.185
[email protected] (AT&T (US)): [Copy results to clipboard]
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 176.32.108.185
[email protected] (CloudFlare): [Copy results to clipboard]
amazon.de. 13 IN A 52.95.120.34
amazon.de. 13 IN A 54.239.39.102
amazon.de. 13 IN A 176.32.108.185
[email protected] (Comodo (US)): [Copy results to clipboard]
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 52.95.120.34
amazon.de. 1801 IN NS ns2.p31.dynect.net.
amazon.de. 1801 IN NS ns3.p31.dynect.net.
amazon.de. 1801 IN NS ns1.p31.dynect.net.
amazon.de. 1801 IN NS pdns1.ultradns.net.
amazon.de. 1801 IN NS ns4.p31.dynect.net.
amazon.de. 1801 IN NS pdns6.ultradns.co.uk.
[email protected] (Google): [Copy results to clipboard]
amazon.de. 26 IN A 52.95.120.34
amazon.de. 26 IN A 176.32.108.185
amazon.de. 26 IN A 54.239.39.102
[email protected] (HiNet (TW)): [Copy results to clipboard]
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 176.32.108.185
[email protected] (OpenDNS): [Copy results to clipboard]
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 54.239.39.102
[email protected] (Quad9): [Copy results to clipboard]
amazon.de. 13 IN A 52.95.120.34
amazon.de. 13 IN A 176.32.108.185
amazon.de. 13 IN A 54.239.39.102
[email protected] (Securolytics (CA)): [Copy results to clipboard]
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 52.95.120.34
[email protected] (UUNET (CH)): [Copy results to clipboard]
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 54.239.39.102
[email protected] (UUNET (DE)): [Copy results to clipboard]
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 52.95.120.34
[email protected] (UUNET (UK)): [Copy results to clipboard]
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 54.239.39.102
[email protected] (UUNET (US)): [Copy results to clipboard]
amazon.de. 60 IN A 54.239.39.102
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 52.95.120.34
[email protected] (Verisign (US)): [Copy results to clipboard]
amazon.de. 60 IN A 52.95.120.34
amazon.de. 60 IN A 176.32.108.185
amazon.de. 60 IN A 54.239.39.102
[email protected] (Yandex (RU)): [Copy results to clipboard]
amazon.de. 40 IN A 52.95.120.34
amazon.de. 40 IN A 176.32.108.185
amazon.de. 40 IN A 54.239.39.102Also, as mentioned before, I am able to connect to Amazon.de when Iām connected to my ISPās modem directlyā¦
Okay rt 87u has a long pageā¦ run the dig and watch the log pageā¦ see whats going on maybe?
I didnāt notice anything happening on the routerās log. The general log was empty and there wasnāt much to go with in the connections log.
Strange well im a bit lost of words. I dont know whats occuring. Here is my suggestion. There are almost no 3x3 adapters out there and even if you do have on dont worry about mixing brands of wireless cardsā¦
Go get yourself a TP Link Archer C7 return this problematic routerā¦ load OpenWRT onto the TP linkā¦ and have a wonderful router that you control.
You can do this with an AC68U from asus as well. You see most newer AC products dont make that big of a difference because while they advertise all this good stuff. No adapters really push it.
Anyways sorry to here this is occuringā¦ OH WAIT hold onā¦ so the 87u has all that trend micro processing and stuff rightā¦ safety featuresā¦ can they be disabled?
These safety features are all opt-inā¦and I have them deactivated.
As far as I can tell, the C7 doesnāt support MU-MIMO, a feature Iād like to have since I have many devices running concurrently. I have taken a look at this router from Netgear, the reviews are quite good:
MU-MIMO does not make as big of a difference as Wifi 6 You should look into Wifi 6 routers and adapters if your network is very large for a home ā¦ P.S any wave 2 access point will do MU-MIMO its part of the standard
The thing with WiFi 6 though, is that the cliemts meed to support this as well. Another feature Iād like to have is WiFi in the gardenā¦but I do know that this canāt ne guarenteed ony amy device since there are many contributing factors.
What I am saying is MU-MIMO claims an increase in user density but as a communications engineer myself I actually know its not all that great at doing so because effective MU-MIMO requires better channel estimations otherwise its precoding falls apart quickā¦ Not to mention if the SNR falls below a level it actually slows the networkā¦ where above a certain levelā¦ it increases it a tonā¦ so it hit or miss even on small networks. Im not trying to bash itā¦ I think its a good technology but it doesnt stand up to the efficiency of OFDMAā¦ OFDM with MU-MIMO is like OFDM with a plusā¦ OFDMA with MU-MIMO is trully efficiencyā¦ OTFS in the future beats them both so the question isā¦ is it worth the money to get MU-MIMO on existing networking technologies? Probably not unless you had greater than 30 devices trying to talk and stream at once?
Also MU-MIMO only allows the router to send to multiple devices at oneā¦ the reality of the matter is its still very bottle necked because the send of each device to the router is still a turn by turn CTS methodā¦
Thats what I meant aboveā¦ But go with a product you see fit for your environment mostly anything will be better then what you have. I caution against buying 1st gen new breakthrough products (like the 87u was) ā¦ They often are a paperweight or a beta test for whatās to come later 
Thanks for all your help, Iāll do just that
No problem thats what most of us are here for. If you have questionsā¦ just @ me in this thread. I can answer a lot of answers about equipment and compatibilityā¦ advice from my time working with stuff. I was very much like everyone else in the beginning all about the cool new features of routers and stuffā¦ Trust me I was jumping up and down about buffalo air stations LOLā¦ but as I began to really learn moreā¦ the reality of things areā¦ A well designed home network often doesnt need fancy equipment or MU-MIMO or any of that haha ā¦ That being said It doesnt hurt to have it with solid equipment.
Sorry to here that 87u has been such a trash can for ya
I can reiterate alot of the problems heās having here. My 87u was a peice of crap. I got rid of it very quickly. Good job on diagnosing his issues though. And sticking with him with the help.
Yeah, @PhaseLockedLoop was very helpful indeed. As it turns out my router seems to fail more and more, since apparently fewer sites work without me changing anything.