+IPv4 (Internet Protocol version 4) is the foundational standard that assigns a unique [IP Address](/wiki/ip_address) to every device on a network. It guides digital [data packets](/wiki/data_packet) across the global web, forming the very essence of online communication. Though its address space is finite, it remains a critical backbone of the [Internet](/wiki/internet).
+## See also
+- [IPv6](/wiki/ipv6)
+- [Subnet](/wiki/subnet)
+- [Router](/wiki/router)
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