Even if you have a server (or two) running your own DNS, to minimise service interruptions or outages it’s a great idea to have additional secondary DNS servers that are separate from your infrastructure.
These are some of the free secondary DNS providers that I have used.
- 5 DNS hostnames in Europe, some are anycast in multiple EU locations.
- Single DNS server in Chicago IL, USA.
- 4 DNS Servers
- 1 DNS zone, 50 records, 500k queries/mo
- 3 DNS hostnames, all in Germany.
- 25 domain limit
- 5 DNS servers that are anycast in multiple locations USA, Europe, Asia.
- Note: You must delegate your domain to them before you can add your domain.
- 2 DNS servers in different locations in Japan, Tokyo & Sapporo.
- Single DNS server in Detriot MI, USA.
- 4 DNS server hostnames that are anycast in 18+ locations around the world.
- 50 Records & 1M queries included in free account.
- Single anycast hostname
- 20+ worldwide locations
- Single DNS server in Ukraine.
- Single DNS server in Malaysia.
- Available on IPv4 only.
- 10 domain limit
I try to check this list and keep it updated, please let me know if you have a suggested update.
If you don’t want to run your own DNS server(s) and just want a full managed DNS service, I also have a page listing free DNS providers.