ClouDNS vs DNS Unlimited Secondary DNS

ClouDNS9.4Visit DUDNS Unlimited Secondary DNS8.7Visit

Higher score ClouDNS #1 in Secondary DNS Services 9.4/10 Free plan Free plan✓ 2 of 4 features Visit ClouDNS

vs

DU DNS Unlimited Secondary DNS #6 in Secondary DNS Services 8.7/10 30-day trial Free trial✓ 3 of 4 features Visit DNS Unlimited

• ClouDNS fits best

  Broad secondary DNS with automation

• DNS Unlimited Secondary DNS fits best

  Low-cost multi-server secondary DNS

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Side by side

Feature	ClouDNS 9.4/10 Visit ↗	DUDNS Unlimited Secondary DNS 8.7/10 Visit ↗
At a glance
Editor score	9.4	8.7
Ranking	#1 in Secondary DNS Services	#6 in Secondary DNS Services
Best for	Broad secondary DNS with automation	Low-cost multi-server secondary DNS
Pricing model	Free plan + paid	Paid
Starting price	$2.95/mo (best)	$5/mo
Free plan	✓ (best)	—
Free trial	—	30 days
Deployment	Cloud	Cloud
Platforms	Web	Web
Integrations	4 integrations	5 integrations
Features ClouDNS 2/4 · DNS Unlimited Secondary DNS 3/4
Health checks	✓ (best)	Not checked yet
DNSSEC support	Not checked yet	✓ (best)
API access	✓	✓
IPv6 support	Not checked yet	✓ (best)
Specs
Transfer protocols	Not checked yet	Axfr
Zone limit	Not checked yet	10 zones
Secondary nameservers	Not checked yet	5 nameservers
Our review
Pros	Secondary DNS with Anycast, DNSSEC, monitoring, and backups GeoDNS, failover checks, and advanced traffic routing API access with WHMCS, Terraform, OctoDNS, and SAML SSO	Five geographically distributed authoritative nameservers Multiple masters, AXFR transfers, and DNSSEC support API access, logs, statistics, IPv4, and IPv6 support
Cons	The Free DNS plan supports only 1 DNS zone and 50 DNS records Paid plans begin at Premium S, with 5 DNS zones and 1 failover check Plan capacity jumps from 400 zones on Premium L to unlimited on Enterprise	No free plan; fixed pricing starts at $5 per month Cloud-only deployment Unlimited uses query-based pricing with a monthly minimum charge
Our verdict	ClouDNS is a managed DNS platform for businesses and organizations that host and route domain traffic. It combines web-based DNS zone and record management with Anycast DNS, GeoDNS, DNS failover checks, DNSSEC, secondary DNS, monitoring,… Read the review →	DNS Unlimited Secondary DNS is a cloud service for organizations that operate their own primary DNS servers and need secondary authoritative hosting. It transfers zones from primary servers, serves them through five geographically… Read the review →

Strengths and trade-offs

• ClouDNS — where it wins

  • Secondary DNS with Anycast, DNSSEC, monitoring, and backups
  • GeoDNS, failover checks, and advanced traffic routing
  • API access with WHMCS, Terraform, OctoDNS, and SAML SSO

  Where it doesn't

  • The Free DNS plan supports only 1 DNS zone and 50 DNS records
  • Paid plans begin at Premium S, with 5 DNS zones and 1 failover check
  • Plan capacity jumps from 400 zones on Premium L to unlimited on Enterprise

• DNS Unlimited Secondary DNS — where it wins

  • Five geographically distributed authoritative nameservers
  • Multiple masters, AXFR transfers, and DNSSEC support
  • API access, logs, statistics, IPv4, and IPv6 support

  Where it doesn't

  • No free plan; fixed pricing starts at $5 per month
  • Cloud-only deployment
  • Unlimited uses query-based pricing with a monthly minimum charge

• ClouDNS9.4/10 · Free plan

  A broad secondary DNS service with automation, routing, monitoring, and API access.

  Visit ClouDNSFull verdict →
• DUDNS Unlimited Secondary DNS8.7/10 · 30-day trial

  A low-cost secondary DNS service for multi-server deployments and primary DNS redundancy.

  Visit DNS UnlimitedFull verdict →