本站提供台灣國碼(+886)搜尋以及中華電信、台灣之星、台灣大哥大、遠傳電信、亞太電信。
我們查詢號碼的來源皆為初始來源，初始來源代表意思為尚未轉電信前的來源電信。
本平台的市話地區查詢，只要搜尋號碼即可馬上知道來源地區。
手機來電顯示號碼，卻不知道這是哪一家門號？市話來電顯示號碼，卻不知道這是哪裡打來的？
在這裡您可以輸入手機搜尋，了解台灣電信業者門號，包含(+886)，像是中華電信、遠傳電信、台灣大哥大、亞太電信、台灣之星...等等。
在這裡您可以輸入市話搜尋，了解台灣市話來源，包含(+886)。
| 名稱 | 電話或信箱 |
|---|---|
| 全國各地報案電話 | 110 或 165 |
| 犯罪案件免費檢舉電話 | 0800211511 |
| 網路報案 | https://web110s.ntpd.gov.tw/ |
| 檢舉信箱 | 臺北郵政80之23號信箱 |
| 內政部警政署刑事警察局 | https://www.cib.gov.tw |
| 線上檢舉信箱 | https://www.cib.gov.tw/Service/Report1 |
| 臺北市政府警察局 網路報案網址 | https://police.gov.taipei/cp.aspx?n=D794D1CE218080F3 |
| 資料來源：https://www.post.gov.tw/post/internet/Q_localpost/index.jsp?ID=12231001，如有錯誤或侵權請告知。 | |
| 中華電信資訊 | ||
| 前段號碼：0921 | 中段號碼：521 | 尾段號碼：000~999 |
| 電話種類：台灣行動電話 | 手機號碼初始來源：中華電信 | |
| 市話/ADSL/光世代/MOD等綜合業務 | |
|---|---|
| 24小時客戶服務專線 | 123或手機直撥0800-080123 |
| 服務時間 | 周一至周五：9:00~21:00，例假日：9:00~18:00 |
| 行動通信業務 | |
|---|---|
| 24小時客戶服務專線 | 手機直撥800或0800-080090 |
| 服務時間 | 周一至周五：9:00~21:00，例假日：9:00~18:00 |
| HiNet網路數據業務 | |
|---|---|
| 24小時客戶服務專線 | 0800-080412 |
| 服務時間 | 周一至周五：9:00~21:00，例假日：9:00~18:00 |
| ADSL/光世代/MOD障礙申告 | |
|---|---|
| 24小時客戶服務專線 | 0800-080128 |
| 服務時間 | 周一至周五：9:00~21:00，例假日：9:00~18:00 |
| 以上資料來源：https://www.cht.com.tw/home/cht/service/call-line，如有錯誤或侵權請告知。 | |
中華電信股份有限公司（簡稱：中華電信、中華電、CHT）是中華民國（臺灣）的電信業者，原為交通部電信總局的營運部門。
1996年因政府施行電信自由化政策，根據電信三法從交通部電信總局中拆分出來設立公司，其業務範圍涵蓋固網電信、行動通信及數據通信等。
中華電信的行動通訊業務包括WCDMA(3G)、HSDPA、HSUPA(3.5G)、HSPA+(3.75G)、4G LTE、5G NR。
以下為中華電信0921521000～0921521999系列號碼。
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警政署為加強預防詐欺犯罪，設立「反詐騙諮詢專線165」電話，提供民眾諮詢。
凡遇不明可疑電話，不論手機或市話，只要撥打「165」即可由專人為您說明研判是否為詐欺事件。
請大家告訴大家，共同打擊犯罪，預防詐騙。
「天下沒有白吃的午餐」:戒除貪念，遠離中獎詐騙。
不接「不顯示電話」電話，幫助您拒絕詐騙。
「法院電話語音通知出庭」是詐騙:勿聽信電話內歹徒指示，辦理任何金融開戶或轉帳。
多管閒事當雞婆:住宅電話信箱勤觀查，提防詐騙歹徒盜轉接電話。
小心申辦信用卡或行動電話:親自前往指定門市申辦最保險，勿至不明商家，以免個人資料外洩。
小心網路聊天室陷阱:切勿留下家中地址、、電話或個人影像，以免成為勒索肥羊
小心網路援交陷阱:ATM無法辦識憲警身分，切勿聽信歹徒指示操作，以免遭恐嚇詐財。
網路購物要小心:線上刷卡先確認網站真假；「一手交錢，一手驗貨」交易有保障。
防詐騙3要領:「冷靜」、「查證」、「報警」。
請牢記警政署防詐騙專線「165」:「165」全年不打烊，受理諮詢、檢舉或報案。