Alternatives to dyndns (dyn.com)

dyndns.org/.com -> dyn.com (you need log to panel at least one time /month)

Alternatives:

 [1] https://www.noip.com/  #2026 (3 free address)

 a) https://dynu.com
 b) http://freedns.afraid.org



References

[1] Server Software/Dns & DDns Providers http://www.dyndnsservices.com/tech.htm
[2] Providers list http://dnslookup.me/dynamic-dns/