Namespace Naming Validator (DNS-1123)

Kubernetes namespace names must be valid DNS-1123 labels and no longer than 63 characters. The Namespace Naming Validator checks a candidate name against both rules and reports any problems.

Paste a candidate namespace name and get an immediate valid/invalid verdict.

Everything runs locally; nothing is uploaded.

• DNS-1123 check - label rule validation.
• 63-char limit - length enforced.
• Reasons - why a name fails.
• Copy / Download / Print - export the verdict.
• Private - runs entirely in the browser.

1. Enter a namespace name to validate.
2. Click Validate for the verdict.
3. Copy or download the result.

my-ns is valid.

My_Ns is invalid (uppercase and underscore).

team-prod-01 is valid.

• Correct - matches k8s rules.
• Clear - explains failures.
• Fast - instant verdict.
• Private - no network calls.