Does the country provide individual online voter registration/polling assignment checks?

Kyrgyzstan

Answer

Yes, confirmation of registration using online interface
Yes, assigned polling station using online interface

Source

Law of Kyrgyz Republic No 136 ?On biometric registration of the citizens of Kyrgyz Republic?
Article 2. Aim and tasks of the present Law
2. This Law has following tasks:
2) compilation of the actual voter register;
5) timely and quality service to the population;
http://grs.gov.kg/ru/documents/laws/29-Zakon-KR-O-biomietrichieskoi-rieghistratsii-ghrazh/

Comment

The webpage provides individual electronic voter registration as well as polling assignment checks.
http://shailoo.srs.kg/votingsystempublic/home.xhtml