I can't access to random subdomain although setting up the cname wildcard

thedogcampaign · July 21, 2021, 1:54am

I can’t access to random subdomain although setting up the cname WILDCARD *. For example, I can’t access 11.itproo.com, 12.itproo.com. However, when I setting up specific subdomain like sub.itproo.com, it works

How to access to random subdomain ? Thank you

sdayman · July 21, 2021, 2:13am

That’s not a very specific error.

Cloudflare supports wildcard DNS, but only Enterprise plans will let you Proxy it.

thedogcampaign · July 21, 2021, 2:31am

Hi,
Sorry for not mention the detail of the problem. I just updated my thread @sdayman

sdayman · July 21, 2021, 2:37am

I can’t replicate that. I added a sub CNAME, and then a wildcard CNAME and they all resolve.

Are the two name servers at the bottom of your DNS page Doug and Savanna?

thedogcampaign · July 21, 2021, 2:42am

Yes,
they are Doug and Savanna

sdayman · July 21, 2021, 2:43am

You’ll have to get Support to investigate this. Using your email address associated with your account, email them: support AT cloudflare DOT com

When you get the ticket number in the reply, please post it here.

thedogcampaign · July 21, 2021, 2:53am

Hi, my ticket number is 2211447

sdayman · July 21, 2021, 2:58am

You’ll probably get an automated response telling you to ask the community and some links to possible solutions. Make sure you reply back so they know you really need their help.

I’ll put this thread in the escalation queue.

rapha · July 21, 2021, 9:38am

Hi @thedogcampaign
I was looking into this and could not reproduce this on my zone either.
How was this record added? It seems to be treating the “*” literally instead of like a wildcard:

dig "*.itproo.com" +short
bingwebmaster112.herokuapp.com.
3.229.18.97
54.159.26.13
34.227.42.87
34.228.50.116
52.54.141.46
52.45.150.232
52.22.80.219
34.194.143.156

thedogcampaign · July 21, 2021, 9:50am

Hi,
I don’t quite understand what you mean but the value of the content column is
bingwebmaster112.herokuapp.com

rapha · July 21, 2021, 9:57am

Hi @thedogcampaign, I mean what steps you followed to add this dns entry?
Did you do it through the dashboard by clicking on +Add record? If so, what content did you add there? Just * and the CNAME target like bellow?:

thedogcampaign · July 21, 2021, 10:05am

Yes, I did it through the dashboard by clicking “Add record” then fill information like below image

rapha · July 21, 2021, 10:50am

Thanks for confirming.
I will follow up on the ticket then, as this will need further troubleshooting.

amayorga · July 22, 2021, 2:04pm

Hi @thedogcampaign!

This is now resolved it seems:

~$ dig @doug.ns.cloudflare.com 11.itproo.com

; <<>> DiG 9.11.5-P4-5.1+deb10u5-Debian <<>> @doug.ns.cloudflare.com 11.itproo.com
; (6 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40300
;; flags: qr rd ra; QUERY: 1, ANSWER: 9, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;11.itproo.com.                 IN      A

;; ANSWER SECTION:
11.itproo.com.          300     IN      CNAME   bingwebmaster112.herokuapp.com.
bingwebmaster112.herokuapp.com. 60 IN   A       54.236.176.76
bingwebmaster112.herokuapp.com. 60 IN   A       3.221.43.225
bingwebmaster112.herokuapp.com. 60 IN   A       3.219.126.122
bingwebmaster112.herokuapp.com. 60 IN   A       52.200.31.227
bingwebmaster112.herokuapp.com. 60 IN   A       34.199.140.75
bingwebmaster112.herokuapp.com. 60 IN   A       23.22.180.24
bingwebmaster112.herokuapp.com. 60 IN   A       107.20.205.67
bingwebmaster112.herokuapp.com. 60 IN   A       3.213.124.232

;; Query time: 84 msec
;; SERVER: 108.162.193.159#53(108.162.193.159)
;; WHEN: Thu Jul 22 14:02:08 UTC 2021
;; MSG SIZE  rcvd: 211

~$ dig @savanna.ns.cloudflare.com 12.itproo.com

; <<>> DiG 9.11.5-P4-5.1+deb10u5-Debian <<>> @savanna.ns.cloudflare.com 12.itproo.com
; (6 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7252
;; flags: qr rd ra; QUERY: 1, ANSWER: 9, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;12.itproo.com.                 IN      A

;; ANSWER SECTION:
12.itproo.com.          300     IN      CNAME   bingwebmaster112.herokuapp.com.
bingwebmaster112.herokuapp.com. 60 IN   A       3.224.209.49
bingwebmaster112.herokuapp.com. 60 IN   A       34.205.204.79
bingwebmaster112.herokuapp.com. 60 IN   A       34.206.253.122
bingwebmaster112.herokuapp.com. 60 IN   A       23.22.180.24
bingwebmaster112.herokuapp.com. 60 IN   A       3.223.221.167
bingwebmaster112.herokuapp.com. 60 IN   A       34.194.143.156
bingwebmaster112.herokuapp.com. 60 IN   A       52.0.12.63
bingwebmaster112.herokuapp.com. 60 IN   A       3.223.104.152

;; Query time: 103 msec
;; SERVER: 108.162.194.136#53(108.162.194.136)
;; WHEN: Thu Jul 22 14:03:47 UTC 2021
;; MSG SIZE  rcvd: 211

Kindly mark this thread as resolved by picking one of the answers as the solution.

system · July 25, 2021, 2:05pm

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