ASCII code for end of transmission block
23
End of Transmission Block — a control character, not printable
| Decimal | 23 |
| Hexadecimal | 0x17 |
| Octal | 0027 |
| Binary | 00010111 |
| HTML entity |  |
What it is
Ended one block of a message that was split across several transmissions.
The full entry
ASCII 23 in full — the code point page, with what sits either side of it and how the character is encoded elsewhere.
Frequently asked questions
What is the ASCII code for end of transmission block?
The ASCII code for end of transmission block is 23 in decimal, 0x17 in hexadecimal and 0027 in octal.
What is end of transmission block in binary?
00010111 — eight bits, though ASCII only defines seven, so the top bit is always zero.
Is end of transmission block a printable character?
No. End of Transmission Block is a control character — an instruction to a teleprinter rather than a mark on paper, which is why most tables show an empty cell for it.
Other characters
- ASCII code for cancel — 24
- ASCII code for end of medium — 25
- ASCII code for substitute — 26
- ASCII code for escape — 27
- ASCII code for file separator — 28
- ASCII code for group separator — 29
- ASCII code for record separator — 30
- ASCII code for unit separator — 31
- ASCII code for space — 32
- ASCII code for exclamation mark — 33
- ASCII code for double quote — 34
- ASCII code for hash — 35
Every character by name · The ASCII table · Text to binary converter