Sites resolving to 172.64.80.1

Hi,

There appears to be some issues with some random sites that use cloudflare name servers when resolving them through google dns or root hints. They all return 172.64.80.1. Any ideas?

some sites: csse[.]org cnx-software[.]com

Here an example:
nslookup cnx-software[.]com 8.8.8.8
Server: dns.google
Address: 8.8.8.8

Non-authoritative answer:
Name: cnx-software[.]com
Addresses: 2606:4700:130:436c:6f75:6466:6c61:7265
172.64.80.1

With cloudflare dns it’s ok:

nslookup cnx-software[.]com 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1

Non-authoritative answer:
Name: cnx-software[.]com
Addresses: 2606:4700:3034::6815:427f
2606:4700:3033::ac43:cc0f
172.67.204.15
104.21.66.127

Domain:
cnx-software[.]com
Registrar:
PDR Ltd. d/b/a PublicDomainRegistry[.]com
Registered On:
2010-02-15
Expires On:
2026-02-15
Updated On:
2020-12-22
Status:
ok
Name Servers:
jean.ns.cloudflare[.]com
josh.ns.cloudflare[.]com

Are you saying it’s redirecting to 172.64.80.1? Because that’s a cloudflare IP address

1 Like

That’s Cloudflare proxying. When you do a lookup on the domain it will resolve Cloudflare IPs, this is so that the request can go through Cloudflare servers before hitting yours. This is intended behavior.

2 Likes

ahh ok thanks, must be some other reason these are not reachable. Will look into it further. Thanks!

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