Unofficial information on Russian passport numbers, published by Sayari.

Offers insight into decoding information hidden in Russian passport numbers.

Explains the two-passport system in Russia, which includes an internal passport for personal identification and domestic travel, and an international passport for travel across national borders.

Provides a detailed breakdown of how to interpret the digits in a Russian passport number, revealing information such as the region of issuance, the year of issuance, and unique identifiers. Also discusses the significance of international passport numbers, including their use in open-source investigations.