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IP 地址列表: 197.221.51.* (197.221.51.0 - 197.221.51.254)
這是第壹個字節為197,第二個字節為221,第三個字節為51,第四個字節在0 - 255之間的IP地址列表,表示為197.221.51.* (197.221.51.0 - 197.221.51.255)。
這個IP地址列表中包含256個IP地址,我們以其中壹個IP地址197.221.51.1為例,來描述這個IP的屬性:
但這只是其中1個IP地址的例子,並不代表這個列表中所有的IP地址都有同樣的屬性,如果需要了解其它IP和更詳細的IP地址段信息,請點擊下面列表中的標題鏈接。

內容:
2. C類IP地址列表
C類IP地址是指:在IP地址的四段號碼(例如:字節1.字節2.字節3.字節4)中,前三段號碼(字節1.字節2.字節3)為網絡號碼,剩下的後壹段號碼(字節4)為本地計算機的號碼。
如果用二進制表示IP地址的話,C類IP地址就由3字節的網絡地址和1字節主機地址組成,網絡地址的最高位必須是'110'。
C類IP地址範圍:192.0.0.0 ~ 223.255.255.255,可用IP地址範圍:192.0.0.1 ~ 223.255.255.254。
C類IP地址中網絡的標識長度為21位,主機標識的長度為8位,C類網絡地址數量較多(2 ^ 21 = 2097152個),適用於小規模的局域網絡,每個網絡最多只能包含254臺計算機(2 ^ 8 - 2 = 254個)。
如果您需要了解C類IP地址段詳情,可以點擊C類IP地址列表中的標題鏈接。
- 197.221.51.0網絡ID號碼,不能分配使用
- 197.221.51.1常用於網關、路由器等網絡設備
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- 197.221.51.254
- 197.221.51.255網絡廣播地址,不能分配使用
3. 最後一個 IP 地址示例

197.221.51.255是一個公開IP地址,使用者位於南非 西开普省 開普敦,其用途是數據中心/網絡託管/傳輸,類型是公司/T1。更多詳情:197.221.51.255。
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