Why Google Sees Your Real IP Even Behind a Proxy
Many media buyers and SMM specialists assume that plugging in a proxy keeps an account safe. In practice, the browser leaks your true address around the proxy through WebRTC. This is a set of APIs for video calls and P2P connections that queries your local and public IP addresses via STUN servers to establish a direct channel. Google, YouTube and Gmail easily compare this honest WebRTC address with the one declared by your proxy. If they differ, the system flags the spoofing and links all your YouTube channels and Gmail inboxes into a single multi-account cluster.
This is especially painful for media buying and arbitrage: one exposed profile can drag down an entire farm of channels and Google Ads accounts.
Timezone Mismatch — the Second Account-Linking Marker
The second common slip is a timezone mismatch. The proxy gives an IP in, say, Germany, while the antidetect browser keeps the system time of Moscow. The JavaScript method Date.getTimezoneOffset() and the interface language instantly reveal the contradiction: the IP geolocation does not match the device timezone. For Google this is a clear sign of automation or work through someone else's address.
- IP in the US (UTC-5) but browser timezone UTC+3 — an instant flag.
- Language
ru-RUon a channel with US geo — elevated risk. - Identical offset across dozens of "different" accounts — a farm signature.
How Both Leaks Combine Into One Piece of Evidence
Individually, a WebRTC leak and a timezone mismatch are already a problem. Together they give Google near-perfect identification. The antifraud system correlates the browser fingerprint, the real IP from WebRTC and the timezone, then merges accounts by overlaps.
| Parameter | What it exposes | Fix |
|---|---|---|
| WebRTC | Real public/local IP | Spoof or disable in antidetect |
| Timezone | Mismatch with IP geo | Auto timezone from proxy IP |
| Language/locale | Contradiction with region | Locale matching account geo |
Correct Antidetect and Proxy Setup
To keep YouTube channels and Gmail accounts from being glued together, you need a consistent profile bundle. In Dolphin Anty, AdsPower, GoLogin or Multilogin, assign each profile a separate mobile or residential proxy and switch WebLeak spoofing to "match proxy" mode.
- WebRTC — "replace/proxy" mode so the public IP matches the proxy.
- Timezone — auto-detected from the IP, not the system time.
- Language and locale — matching the proxy region (e.g., en-US for US geo).
- One profile = one proxy = one account, no overlaps.
Residential and mobile proxies are preferable to datacenter ones: they have clean reputation and correct geo that Google does not flag as server-side.
Where to Get Safe Google, YouTube and Gmail Accounts
Even a perfect setup won't help if the accounts are dirty from the start. At YTMarket (ytmarket.pro) you get aged and warmed-up YouTube channels, Google accounts (Ads, Voice, Cloud, Workspace, Play Developer) and Gmail (fresh, aged, PVA, bulk, API) with clean history, ready for antidetect and proxies. Payment is convenient in USDT, via CryptoBot or in rubles, and every account carries a 24-hour warranty — enough time to check the profile in your antidetect browser before sending traffic.
The combination of a clean account, proper antidetect and a residential proxy with no WebRTC leak and the correct timezone is the foundation of stable multi-accounting in the Google ecosystem without mass bans.