Quiz Entry - updated: 2026.07.14
Convert the binary IPv4 address 11000000.10101000.00001011.00001010 to dotted decimal notation.
192.168.11.10 — convert each octet by adding its set position values.
Convert each octet separately:
| Octet | Binary | Calculation | Decimal |
|---|---|---|---|
| 1st | 11000000 | 128+64 | 192 |
| 2nd | 10101000 | 128+32+8 | 168 |
| 3rd | 00001011 | 8+2+1 | 11 |
| 4th | 00001010 | 8+2 | 10 |
Result: 192.168.11.10
Tip: Always use the position values 128, 64, 32, 16, 8, 4, 2, 1 and add where there's a 1.
Go deeper:
RapidTables — binary to decimal converter — check each octet's sum yourself before trusting the whole address.