Suggest an editImprove this articleRefine the answer for “What is the size of an IPv4 address?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**The size of an IPv4 address is 32 bits.** **Key point:** an IPv4 address has a length of 32 bits (4 bytes).Shown above the full answer for quick recall.Answer (EN)Image**The size of an IPv4 address is 32 bits.** --- ## In short, for an interview > **An IPv4 address has a length of 32 bits (4 bytes).** --- ## A little more detail, simply ### What this looks like in practice 32 bits = **4 bytes**, so an IPv4 address is written as: ``` 192.168.1.10 ``` - 4 numbers - each number is **1 byte (8 bits)** - the range of each number: **0-255** --- ## What is important to remember - IPv4: - a logical address - used at the **network layer** - Total possible IPv4 addresses: - 2³² ≈ **4.3 billion** --- ## For comparison | Address | Size | |---|---| | IPv4 | **32 bits** | | IPv6 | 128 bits |For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.