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IP 地址列表: 192.91.21.* (192.91.21.0 - 192.91.21.254)
這是第壹個字節為192,第二個字節為91,第三個字節為21,第四個字節在0 - 255之間的IP地址列表,表示為192.91.21.* (192.91.21.0 - 192.91.21.255)。
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192.91.21.1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。
二進制、十進制和十六進制的 IP 地址說明 IP 地址類別 A/B/C/D/E 和網絡 ID、主機 ID 的說明內容:
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。
- 192.91.21.0網絡ID號碼,不能分配使用
- 192.91.21.1常用於網關、路由器等網絡設備
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- 192.91.21.255網絡廣播地址,不能分配使用