Russia's communications regulator blocked some Alphabet Inc. internet addresses, blaming the U.S. owner of Google for helping Pavel Durov's Telegram Messenger LLP service evade government blocking.

"Google hasn't complied with Roskomnadzor requests and, despite a court ruling, keeps allowing Telegram Messenger to use its IP addresses to operate in Russia," the watchdog said on its official page on the VK.com social network. "Therefore, Roskomnadzor included some Google IP addresses into a register of banned internet resources."

Google services were partially unavailable in Moscow, St. Petersburg, Kazan, Krasnoyarsk and other Russian cities on Sunday, according to downdetector.com, a service that monitors internet outages. Google said it's aware of reported problems with user access.