Find the missing checks before changing DNS.
Walk through website, email, HTTPS and rollback dependencies before touching a live domain. The result is a preparation check—not a live DNS scan.
- Outcome
- A weighted readiness score, critical blockers and the next checks to close
- Time
- About 3 minutes
- Privacy
- Local by default; optional private save
You choose what to keep.
Calculations run locally without provider requests or input analytics. Refreshing clears working values. Only “Confirm & save snapshot” sends the displayed numbers/choices and your title to private, encrypted account storage. Nothing is automatically saved.
Mark only what is evidenced.
Checking a box means the named dependency has been reviewed for this exact domain and release—not merely discussed.
0 / 100
Not ready for a live change. 0 of 12 checks are evidenced.
Critical blockers
- I have a complete record inventory
- The new destination is verified
- A recoverable before-state exists
- Mail delivery records are protected
- A rollback owner and stop condition are named
Next actions
- Mail delivery records are protectedSeparate website records from mail records and preserve every required MX/TXT entry.
- I have a complete record inventoryExport or copy the current DNS zone before editing it.
- The new destination is verifiedConfirm the target in the destination system; do not infer it from a screenshot or old note.
- A recoverable before-state existsCreate a dated export or evidence record and name the person who can restore it.
Keep this decision
Saving is optional. Calculations are free; signed-in users can keep a private snapshot. Premium and Team can compare snapshots and export briefs.
My saved calculations →Estimate first. Verify the changing facts next.
The utility makes its assumptions and arithmetic visible. Before spending money or changing a live system, replace example values with current first-party information and preserve a rollback path.
- 01Enter the exact jobUse real workload values, not an aspirational maximum.
- 02Read the boundarySee what the calculator deliberately does not infer.
- 03Verify at sourceConfirm current limits, prices, records or plan terms.
- 04Make a controlled decisionRecord the owner, evidence and rollback before action.