ClouDNS: How to Ensure 100% Uptime with Managed DNS and Failover
2.95$
ClouDNS is a fault-tolerant Anycast network that supports DNS failover and comprehensive infrastructure monitoring. Your infrastructure shouldn’t ever go down—get a 10,000% SLA and instant failover that redirects traffic faster than you can even notice an outage. ClouDNS claims an incredible 10,000% SLA, which effectively means 100 times the compensation for every minute of downtime.
Description
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ClouDNS — this is a cloud platform for managing DNS zones and monitoring the availability of websites, servers, and network services. Unlike traditional hosting providers, the service doesn’t provide servers, but focuses on DNS infrastructure, fault tolerance, and resource availability monitoring.
The platform combines Managed DNS, an Anycast network, and built-in monitoring tools, making it convenient for DevOps tasks and high-load projects. Check out this comparison of the best services for monitoring websites, domains, and servers.
Key Features of ClouDNS
DNS hosting and zone management
ClouDNS provides a full-featured Managed DNS service with the ability to manage all record types (A, MX, CNAME, etc.), as well as an API for automation. Users can centrally manage domains, configure zones, and scale the infrastructure without manual intervention.
The service operates on a distributed cloud network with dozens of points of presence (PoPs), ensuring fast synchronization and stable DNS availability.
Website and server monitoring
ClouDNS includes a built-in monitoring system that tracks resource status and sends notifications in the event of failures.
Supported:
- HTTP/HTTPS (website checking)
- ICMP Ping
- TCP/UDP ports
- SSL/TLS
- Keyword monitoring
- Heartbeat monitoring
- Firewall and network checks
When problems are detected, the system logs the incident and provides diagnostic data (e.g., traceroute), helping to quickly determine the cause of the failure.
DNS monitoring
A separate area is DNS response validity monitoring. The service checks whether domains are resolved correctly and whether the responses match the specified configuration.
This allows you to:
- identify errors in DNS records
- monitor resolution failures
- protect against DNS spoofing and attacks
Additional types of monitoring
ClouDNS stands out for its support of specific checks:
- SMTP monitoring — monitoring the delivery and availability of mail servers
- Streaming monitoring — checking audio streams
- IMAP monitoring — monitoring email services
- Keyword monitoring — checking page content
All checks can be accompanied by notifications via email, Telegram, SMS, or webhooks.
DNS Failover and fault tolerance
One of the key features is DNS Failover – automatic switching to a backup server if the primary one fails.
This allows you to:
- minimize downtime
- maintain service availability
- automatically restore project operation
Performance and infrastructure
ClouDNS uses Anycast DNS and is a leader in DNS query processing speed (according to DNSPerf as of 2025).
The service also claims an SLA of up to 10,000% uptime, highlighting its focus on high-load projects.
Advantages and disadvantages
Pros
Cons
Who is ClouDNS suitable for?
The service will be especially useful for:
- DevOps engineers
- Website and SaaS project owners
- Hosting providers
- Projects with high loads and uptime requirements
ClouDNS Contacts
- Website: cloudns.net
- Company: ClouDNS Ltd. — registered in Bulgaria
- Company Founding Date: 2010
- Website Languages: Russian, English, Portuguese, French, German, Polish, Ukrainian, and others.
Technical support language: English
Actual address of the head office: Bulgaria, Sofia, 4 Iskar Str
Technical support contact information
- e-mail: support@cloudns.net, abuse@cloudns.net
- social media: Facebook, X (Twitter), LinkedIn.
Payment methods: PayPal, bank cards (via Adyen and Safecharge), Skrill, bank transfer (SEPA, SWIFT), cryptocurrencies (Bitcoin, Ethereum, Litecoin, Bitcoin Cash via BitPay and Confirmo), AliPay.
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