这通未知的Ping通话声音清晰，虽然不清楚目的，但感觉是系统检测。
Reverse Phone Lookup in Mainland China — Recent Community Reports
Check unknown Chinese numbers with recent reports (Beijing, Shanghai, Guangzhou, Shenzhen) and share your experience.
Unknown calls in Mainland China
Unsure about a number from mainland China? Explore concise community notes to judge calls and texts. In Beijing, Shanghai, Guangzhou and Shenzhen you’ll see both legitimate callbacks (deliveries, banking, appointments) and waves of robocalls or phishing. Prefixes like 010 (Beijing), 021 (Shanghai), 020 (Guangzhou), 0755 (Shenzhen) and mobile 13x/15x/18x ranges are useful context but not proof of origin due to portability and VoIP.
Verification: return calls via the official number listed on the provider’s website/app, check in‑app notices and never share one‑time codes by phone. Use device/carrier blocking for repeat issues and leave a short, factual note here to help others.
Ping通话仅是系统提示，没什么实际信息。
Un numero sconosciuto mi chiama anche di domenica, boh.
收到的短信全是关于加密货币的诈骗链接，内容夸张且毫无依据，建议大家直接拦截。
这通来自‘Chiamata spam’的广告电话毫无新意，直接挂断。
Man sollte einfach fragen, ob man zurückrufen kann, weil ihr zuerst eure Bankmitarbeiterin kontaktieren wollt, die für euch zuständig ist, um zu prüfen, ob wirklich jemand von der Deutschen Bank dran ist… und dann ist das Gespräch plötzlich beendet, 真是的。
付费电话的提醒让人有点紧张，建议先确认费用再决定是否继续。
Ricerca di mercato.
Essendo già cliente Enel, mi hanno sempre consigliato di contattare direttamente l'azienda, non i call center, per aggiornare i contratti.
Questa ricerca di mercato seria sulle radio ha capito che nella mia zona avevano già raccolto abbastanza dati, ha ringraziato e chiuso la chiamata; mah, se fosse stata una truffa avrebbero continuato a chiedere qualsiasi cosa. Ne parlano anche su Radio Deejay, davvero interessante.
来电显示未知，内容不明，最好先核实再接。
付费电话来电，提醒注意可能的费用。
Blocco effettuato...
恐吓电话的内容极具压迫感，建议不要提供任何个人信息。
付费电话费用高得离谱，根本不值得接听。
Línea de soporte para usuarios de la plataforma de venta SUBITO.IT.
烦人的广告电话总是打断正事，真是浪费时间。
Affermano di rappresentare la distribuzione di energia elettrica.
付费电话费用不透明，感觉被坑了，建议慎重。
Si tratta di un sondaggio di mercato, eh.
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FAQ — China
How to verify callers in China?
Use the official number from the website/app; avoid calling back the unknown number and check in‑app messages.
Do prefixes prove location?
No. Portability/VoIP make 010/021/020/0755 and 13x/15x/18x ranges unreliable as proof.
Common patterns?
Delivery updates, bank callbacks, 2FA codes; robocalls, parcel/account phishing and scripted sales.
Helpful report details?
Caller type, purpose, date/time, and cues that guided your decision.
Popular area codes
Most-reported area codes in China. View all area codes at the bottom.