It depends on what kind of confirmation you need. If you simply want to see whether a person is listed as having unpaid child support, the online register works well. A very clear step-by-step guide is provided here: https://lovilave.com.ua/blog/yak-diznatysya-zaborgovanist-z-alimentiv. With just basic personal data, you can quickly find out if debts exist. This is usually enough for personal awareness or informal discussions. But when it comes to official matters like filing in court or enforcing payments, you will often need a certificate or document from the State Enforcement Service. That requires an in-person request or official application. Many people use both: they first check online to confirm suspicions, then they go to the authority to request an official statement. This way you save time, avoid unnecessary trips, and still get the legal confirmation required.