Yes, it's a good point. In order to associate countries to continents, we are currently using the UN mapping, which lists Russia in East Asia.
We're currently working on a feature where you will be able to record which states/provinces/counties (of a country) you have visited. So, for Russia, you will be able to record any of the following. We'll let you know in the passportstamp blog when we've added this feature!
the passportstamp.com team
Yevreyskaya Avtonomnaya Oblast’
Respublika Sakha (Yakutiya)
Respublika Adygeya
Aginskiy Buryatskiy Avtonomnyy Okrug
Altayskiy Kray
Amurskaya Oblast’
Arkhangel’skaya Oblast’
Astrakhanskaya Oblast’
Respublika Bashkortostan
Belgorodskaya Oblast’
Bryanskaya Oblast’
Chechenskaya Respublika
Chelyabinskaya Oblast’
Chitinskaya Oblast’
Chukotskiy Avtonomnyy Okrug
Chuvashskaya Respublika
Respublika Dagestan
Evenkiyskiy Avtonomnyy Okrug
Nizhegorodskaya Oblast’
Respublika Altay
Respublika Ingushetiya
Irkutskaya Oblast’
Ivanovskaya Oblast’
Kabardino-Balkarskaya Respublika
Kaliningradskaya Oblast’
Respublika Kalmykiya
Kaluzhskaya Oblast’
Kamchatskaya Oblast’
Karachayevo-Cherkesskaya Respublika
Respublika Kareliya
Kemerovskaya Oblast’
Khabarovskiy Kray
Respublika Khakasiya
Khanty-Mansiyskiy Avtonomnyy Okrug
Kirovskaya Oblast’
Respublika Komi
Koryakskiy Avtonomnyy Okrug
Kostromskaya Oblast’
Krasnodarskiy Kray
Krasnoyarskiy Kray
Kurganskaya Oblast’
Kurskaya Oblast’
Gorod Sankt-Peterburg
Leningradskaya Oblast’
Lipetskaya Oblast’
Magadanskaya Oblast’
Respublika Mariy-El
Respublika Mordoviya
Moskovskaya Oblast’
Gorod Moskva
Murmanskaya Oblast’
Nenetskiy Avtonomnyy Okrug
Respublika Severnaya Osetiya-Alaniya
Novgorodskaya Oblast’
Novosibirskaya Oblast’
Omskaya Oblast’
Orenburgskaya Oblast’
Orlovskaya Oblast’
Penzenskaya Oblast’
Primorskiy Kray
Pskovskaya Oblast’
Rostovskaya Oblast’
Ryazanskaya Oblast’
Sakhalinskaya Oblast’
Samarskaya Oblast’
Saratovskaya Oblast’
Smolenskaya Oblast’
Stavropol’skiy Kray
Sverdlovskaya Oblast’
Tambovskaya Oblast’
Respublika Tatarstan
Taymyrskiy (Dolgano-Nenetskiy) Avtonomnyy Okrug
Tomskaya Oblast’
Tul’skaya Oblast’
Respublika Tyva
Tverskaya Oblast’
Tyumenskaya Oblast’
Udmurtskaya Respublika
Ul’yanovskaya Oblast’
Ust’-Ordynskiy Buryatskiy Avtonomnyy Okrug
Volgogradskaya Oblast’
Vologodskaya Oblast’
Voronezhskaya Oblast’
Yamalo-Nenetskiy Avtonomnyy Okrug
Yaroslavskaya Oblast’
Respublika Buryatiya