It's a weird address that was going to cause problems like this
1.1.1.1 1dot1dot1dot1.cloudflare-dns.com
2.2.2.2 not found
3.3.3.3 not found
4.4.4.4 not found
5.5.5.5 not found
6.6.6.6 not found
7.7.7.7 not found
8.8.8.8 google-public-dns-a.google.com
9.9.9.9 dns.quad9.net