Dynamic DNS Services

• Zoneedit.com - DNS-management. 5 free DNS-record. $350 for 100 records.
• DnsMadeEasy.com - Guarantee 100% uptime. $4.95/year
• Ultradns.com
• EasyDNS.com
• No-ip.com
• WorldWideDNS.net
• dnsPark.com
• dns.widge - Free DNS hosting
• hn.org
• dynip.com - Host a website at your computer, even with a dynamic IP.

Other DNS related links

• Webopedia - What is DNS?
• DNS Resources Directory (DNSRD) - Offers general information, reference material, software, news, and links.
• DNS Glossary - What is actually a 'MX Record' or a 'Subnet'? Find out here!
• DNSreport - See if there is a problem with your DNS.
• UltraDNS - DNS hosting and other similar services.