Public resolver

When I try to use your public resolver from this IP address range, the connection is refused.

Are you making DNS Port 53 connections? Or is this DoH?

Your ISP is probably blocking it.

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I try to use Port 53

No, I confirm that there is no blocking at the ISP level.

Hi, can you share the traceroute/mtr output?

dig @

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.7 <<>> @
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
• [root@resolver1 ~]# telnet 53
telnet: connect to address Connection refused

What steps did you take to confirm that?

And, can you add -b to your mtr command so that it shows the actual IPs? e.g. mtr -b

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Hello Erisa
I contacted the ISP, and they confirmed to me that there is no blocking on their end

Hi, from the MTR it seems like it could be your gateway or router. It doesn’t seem to leave your local network. Does work for you?

Yest works:

dig @ +short

  • the MTR test for

Thanks. You could use or one of the alternative addresses then. I’m sorry there’s little we can do to fix the takeover by your CPE, either your ISP should be able to fix it (if it’s configurable/firmware update) or you’d have to replace the CPE. It would be helpful if you could share the hardware model for others, if you don’t mind.

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