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Cloudflare DNS 1.1.1.1 is not resolving console.aws.amazon.com

23 points by flyGuyOnTheSly ↗ HN
I just spent 30 minutes scratching my head as to why the rock solid login page that has never gone down in years was just down... completely... not responding to pings... not responding to traceroute... restarted the modem... left an angry message on my poor little ISPs voicemail... turns out it was cloudflare DNS that was the culprit!

So I just thought I would tell you all here in case you were in the same situation! As I imagine a lot of other HNers are (or were) on the 1.1.1.1

16 comments

[ 1.6 ms ] story [ 49.6 ms ] thread
hieuhtr 

  nslookup console.aws.amazon.com 1.1.1.1
  Server:  1.1.1.1
  Address: 1.1.1.1#53

  Non-authoritative answer:
  console.aws.amazon.com canonical name = lbr-optimized.console-l.amazonaws.com.
  lbr-optimized.console-l.amazonaws.com canonical name = us-east-1.console.aws.amazon.com.
  Name: us-east-1.console.aws.amazon.com
  Address: 54.239.31.83
flyGuyOnTheSly
Well that's odd... because this post is getting upvotes... and I was unable to connect to console.aws.amazon.com for at least 30 minutes before switching DNS servers away from cloudflare... and it worked.
zaarn
The post getting upvotes is not indicative of the content being correct.
flyGuyOnTheSly
Absolutely, but I assumed others were upvoting because they noticed the same problems.

It appears to be intermittent. Not everybody is affected.

dzhiurgis
Weird. That command caused nslookup to hang and ctrl+c to not work. Closed entire iTerm session. Subsequent ones worked.
mmcallister
works for me

  $ dig console.aws.amazon.com @1.1.1.1 +short
  lbr-optimized.console-l.amazonaws.com.
  us-east-1.console.aws.amazon.com.
  54.239.31.91
axaxs
You should really post specific error messages and dig results when making such an assertion. A DNS lookup miss shouldn't cause 'not responding to pings.'
sergiotapia
The internet has been acting weird for me since 9:30pm EST. Some pages load, others don't.

HN was not working at all until the last 10 minutes. Now it seems fine. Anyone else experiencing this?

CodeWriter23
I’ve observed along this line. console.aws.amazon.com redirects to your default region, in my case, us-west-2.(iirc)console.aws.amazon.com and THAT dns lookup fails. It is intermittent in nature, typically resolving within 5 minutes. And though I usually use 1.1.1.1 inevitably I have to switch to 9.9.9.9 to access archive.is, and I’ve experienced this same intermittent failure on 9.9.9.9. I suspect there’s a hiccup in Route 53 delegation causing this.
badrabbit
I have had similar experiences in the past that I have speculated might be a result of malicious intermediate parties. I only made that guess because when this happens, it only happens for sensitive domains of value (more likely it's my confirmation bias and CF is just buggy)
XOKP
I have the same issue, AWS pages are not returning any IP address.

  dig lightsail.aws.amazon.com @1.1.1.1
  
  ; <<>> DiG 9.10.6 <<>> lightsail.aws.amazon.com @1.1.1.1
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7818
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
  
  ;; OPT PSEUDOSECTION:
  ; EDNS: version: 0, flags:; udp: 1452
  ;; QUESTION SECTION:
  ;lightsail.aws.amazon.com. IN A
  
  ;; ANSWER SECTION:
  lightsail.aws.amazon.com. 10 IN CNAME lbr.lightsail-lbr.com.
  lbr.lightsail-lbr.com. 10 IN CNAME ap-southeast-1.lightsail.aws.amazon.com.
  
  ;; Query time: 4 msec
  ;; SERVER: 1.1.1.1#53(1.1.1.1)
  ;; WHEN: Wed Dec 04 23:32:58 +08 2019
  ;; MSG SIZE  rcvd: 138
flyGuyOnTheSly
Where in the world are you located if you don't mind my asking?

I am in Toronto, Ontario, Canada right now.

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(comment deleted)
vavrusa
Sorry about that, I'll look into it in a bit.