Managed DNS and DNSSEC: are your DNS controls keeping up?

TL;DR: Managed DNS can improve DNS resolution speed, availability, and integrity, while DNSSEC helps protect against unauthorized DNS changes and DNS hijacking, according to DigiCert. For identity and access teams, the takeaway is that resilience controls only work when naming, trust, and failover are governed as part of the wider access and trust model.

NHIMG editorial — based on content published by DigiCert: Managed DNS for Seattle, WA: Ensuring Seamless Online Experiences

By the numbers:

• A one-second delay in website loading time can result in a 7% reduction in conversions and a 16% decrease in customer satisfaction.
• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.

Questions worth separating out

Q: How should security teams govern DNS for identity-critical services?

A: Treat DNS as part of the trust path for authentication, certificates, APIs, and workload discovery.

Q: Why does DNSSEC matter for IAM and NHI programmes?

A: DNSSEC matters because it helps prevent unauthorized changes to DNS records that could redirect users or systems to a fraudulent endpoint.

Q: When does managed DNS become a governance issue rather than a hosting choice?

A: Managed DNS becomes a governance issue when naming, failover, and integrity controls directly affect identity services, application trust, and business continuity.

Practitioner guidance

• Inventory identity-dependent DNS dependencies Map which login portals, federation endpoints, API gateways, certificate validation services, and workload endpoints depend on DNS so outages can be prioritized by identity impact, not just by application tier.
• Enable DNSSEC for critical zones Prioritize signing for zones that support authentication, public trust endpoints, and workload discovery, then verify that validation is enforced end to end across recursive and authoritative layers.
• Test secondary DNS failover under loss conditions Run controlled failover exercises and confirm that secondary DNS serves synchronized records, preserved policy, and monitored change control before relying on it for continuity.

What's in the full article

DigiCert's full blog covers the operational detail this post intentionally leaves for the source:

• Specific managed DNS routing and resiliency features used to reduce lookup latency across distributed services
• The vendor's explanation of DNSSEC protections and how they are positioned against DNS hijacking
• How secondary DNS and failover are described for continuity during outages or disruptions
• The Seattle-focused hosting and service positioning that sits outside this post's identity governance analysis

👉 Read DigiCert's managed DNS guidance for Seattle organizations →

Managed DNS and DNSSEC: are your DNS controls keeping up?

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