PrismKit網路CIDR 轉 IP 範圍CIDR 轉 IP 範圍在瀏覽器中執行本機複製連結Markdown將 IPv4 或 IPv6 CIDR 區塊轉換成位址範圍，或將範圍轉回最少的 CIDR 區塊。IPv6 ULA 產生器Roll a random IPv6 unique local address prefix (fd00::/8) for private networks, following RFC 4193.IP 是否在 CIDR 內檢查器Check which CIDR blocks contain each IP address in a list, and spot overlapping blocks.