DNS cost compared: Route 53 vs Azure DNS vs Cloud DNS

Quick answer

Managed DNS (AWS Route 53, Azure DNS, Google Cloud DNS) prices by hosted zones (per zone per month) plus queries (per million), all inexpensive in absolute terms. Extras like health checks, traffic routing policies, and DNSSEC add modest cost. The per-unit differences are small, so the cheapest is usually the DNS native to your cloud (for integration and no cross-cloud complexity). DNS is rarely a meaningful cost; the levers are consolidating zones and being aware of query volume at very high scale.

Managed DNS resolves domain names to addresses, and across the three clouds it is priced similarly, per hosted zone plus per query, and cheaply. DNS is rarely a significant cost, so the comparison is mostly about integration and features rather than squeezing the price.

Zones plus queries

Service	Model
Route 53	Per hosted zone/month + per million queries + health checks
Azure DNS	Per zone/month + per million queries
Cloud DNS	Per zone/month + per million queries

All three charge a small monthly fee per hosted zone plus a per-million-query charge, both inexpensive. Route 53 adds health checks and traffic policies (weighted, latency, geo routing) at modest cost; Azure DNS and Cloud DNS have similar features. DNSSEC and private zones may add a little. So the models align and the absolute cost is low.

Which is cheaper

Because the models and prices are close and all cheap, the differences are negligible for typical use. The cheapest is usually the DNS native to your cloud, for tight integration with your load balancers, CDN, and services, and to avoid managing DNS across clouds. Only at very high query volume, or with many hosted zones, does the cost become noticeable, and even then it is modest.

Controlling DNS cost

Consolidate hosted zones where sensible rather than proliferating them, be aware of query volume at very high scale (a high-traffic domain generates many queries, though still cheaply), use health checks and advanced routing policies where they add value rather than by default, and use the DNS native to your cloud for integration. DNS is rarely worth heavy optimization, so choose for fit; the cost is small relative to the load balancing and traffic it directs.

FAQ

How is managed DNS priced across clouds?

By hosted zones (per zone per month) plus queries (per million), all inexpensive: AWS Route 53, Azure DNS, and Google Cloud DNS follow this model. Extras like health checks, traffic routing policies, DNSSEC, and private zones add modest cost. The models align closely, and the absolute cost is low for typical use.

Which cloud's DNS is cheapest?

The differences are negligible for typical use, since Route 53, Azure DNS, and Cloud DNS price similarly and all cheaply. So the cheapest is usually the DNS native to your cloud, for integration with your load balancers, CDN, and services and to avoid managing DNS across clouds. Only at very high query volume or many zones does cost become noticeable, and even then it is modest.

How do I reduce DNS cost?

Consolidate hosted zones where sensible rather than proliferating them, be aware of query volume at very high scale, use health checks and advanced routing policies where they add value rather than by default, and use the DNS native to your cloud for integration. DNS is rarely worth heavy optimization since the absolute cost is small.

Do DNS queries cost a lot?

Rarely. DNS queries bill per million at a low rate, so even a high-traffic domain generating many queries costs modestly. Query cost only becomes noticeable at very high scale, and even then it is small relative to the infrastructure the DNS directs traffic to. For most, DNS query cost is negligible.

Should I choose a cloud based on DNS cost?

No. Managed DNS is cheap and priced similarly across clouds with negligible differences, so use the DNS native to the cloud where your infrastructure runs for integration and simplicity. Choosing a cloud based on DNS cost would optimize a trivial line item; DNS should follow your infrastructure, not drive cloud choice.

Does C3X estimate DNS cost?

C3X prices DNS resources (hosted zones, health checks) from your Terraform, so the zone and health-check cost appears before deploy. Query cost depends on volume, which you provide as a usage assumption, though DNS is typically a small line relative to the rest of your infrastructure.

What to do next

Price your DNS and networking before you deploy. C3X reads your Terraform and prices your resources against a live catalog. Start with the quickstart.