Managed DNS vs self-managed DNS: where do identity controls shift?

TL;DR: Managed DNS centralises server management, orchestration, security, and failover, while self-managed DNS gives teams more control but shifts all outage, scaling, and attack-response burden in-house, according to DigiCert. The governance question is not convenience versus control, but where operational accountability, resilience, and security ownership sit across infrastructure and identity-adjacent access flows.

NHIMG editorial — based on content published by DigiCert: Navigating the DNS Landscape: Self-Managed vs. Managed DNS Solutions

By the numbers:

• NHIs outnumber human identities by 25x to 50x in modern enterprises.
• Only 5.7% of organisations have full visibility into their service accounts.
• 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface.

Questions worth separating out

Q: How should security teams govern DNS administration in managed environments?

A: Security teams should treat managed DNS administration as privileged access, not routine service configuration.

Q: Why does self-managed DNS create more operational risk for identity teams?

A: Self-managed DNS concentrates responsibility for availability, security, and recovery inside the organisation.

Q: What breaks when DNS access is not tied to ownership and offboarding?

A: DNS governance breaks when former staff, contractors, or automation jobs still retain the ability to change zones or failover settings.

Practitioner guidance

• Map DNS administration to privileged access Inventory every account, token, and operator that can modify zones, failover settings, or name server configuration.
• Review delegated provider access on a fixed cadence Confirm which staff, contractors, and automation identities can manage managed DNS dashboards and APIs.
• Protect automated DNS change paths Treat CI/CD jobs, deployment scripts, and API clients that update DNS as high-value non-human identities.

What's in the full article

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

• A practical comparison of when self-managed DNS is still justified for internal Active Directory or highly customised environments.
• Provider-selection criteria for reliability, scalability, SLAs, and support that implementation teams can use during procurement.
• Operational trade-offs between in-house DNS administration, managed DNS dashboards, and registrar-hosted DNS.
• Guidance on how small businesses should evaluate free DNS hosting versus a managed service.

👉 Read DigiCert's comparison of self-managed and managed DNS for website reliability →

Managed DNS vs self-managed DNS: where do identity controls shift?

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