IPv6 vs IPv4 - The Complete Comparison Guide
Learn the differences between IPv6 and IPv4. Compare address formats, address space, and compatibility.
Quick Summary: IPv6 uses 128-bit addresses supporting about 340 undecillion addresses, while IPv4 supports only about 4.3 billion.
Core Differences Comparison
| Feature | IPv4 | IPv6 |
|---|---|---|
| Address Length | 32 bit | 128 bit |
| Address Format | 192.168.1.1 | 2001:0db8:85a3::8a2e:0370:7334 |
| Address Space | ~43 ไบฟ (2ยณยฒ) | ~340 ไธไบฟไบฟไบฟไบฟ (2ยนยฒโธ) |
Why Do We Need IPv6?
The rapid growth of the internet led to IPv4 addresses being exhausted by 2011.