Telegram uses multiple data centers, often described in community guides by main IDs DC1 through DC5. Those IDs are useful for discussing outages and routing, but a simple permanent phone-country map can be misleading.
How routing works
Telegram’s API documentation describes registration redirects, account-associated data centers, and files stored in particular centers. Client endpoints can change with location and load. A file may require a connection to a different DC from the account’s main requests.
My original post said an account registered with a Chinese number always stays on DC5. The documentation instead describes IP-based selection for a new registration and possible later server-directed user migration. Users cannot simply choose another home DC in the client.
Outages and moving overseas
The original screenshots record disruptions reported for DC5. They do not establish that it fails more often than every other center. A distant network route can contribute to slow transfers, but congestion, the ISP, client behavior, and file location also matter.
Premium can remove Telegram’s own download-speed limits, but cannot eliminate physical distance or every network bottleneck. Creating a new account is not a guaranteed fix and should not be presented as the only solution.
For the technical details, see Telegram’s data-center documentation. Be cautious about bots that claim to diagnose an account: do not give them login codes or session credentials.
Adapted from the original Chinese article, published on February 13, 2026.
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