97 points•23 comments•2h ago•by theanonymousone•dev.moe ↗

Mysteries of Telegram Data Centers

The article outlines Telegram's five data centers (DC1–DC5), stating DC1 (Miami) and DC2 and DC4 (Amsterdam) along with DC5 (Singapore) accept new registrations, while DC3 is described as no longer serving new users and likely transferring existing users to DC1. It describes three methods to determine a user's DC—login method via PHONE_MIGRATE errors, a profile-picture method using a third-party client, and a Web CDN method—note that some methods can misidentify DCs (e.g., DC2 users appearing as DC4). The article also notes that DC5 is prone to downtime.

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