Free checks for cleaner intake.
Run one mechanical check at a time. Use the result to prepare the file. Keep the decision with a person.
Format · Country length · Checksum
IBAN checker
Check an IBAN against its country format, required length, and mod-97 checksum.
Open the toolDNS · MX records · Null MX
MX lookup
Find the mail servers for a domain and see whether it publishes usable MX records.
Open the toolAbout these checks
Each tool answers a narrow question with deterministic code or a public DNS lookup. It does not score an applicant or decide a case.
Klarefi uses the same principle in regulated intake: verify facts, show evidence, and give the complete file to a human reviewer.