|

| TP/IX The Next Internet (IPv7)[<sup>\[5]</sup>](https://en.wikipedia.org/wiki/List_of_IP_version_numbers#cite_note-rfc1475-5) | 1993 | Obsolete[<sup>\[6]</sup>](https://en.wikipedia.org/wiki/List_of_IP_version_numbers#cite_note-rfc6814-6) |
| ----------------------------------------------------------------------------------------------------------------------------- | ---- | ------------------------------------------------------------------------------------------------------- |

Technically 5 and 7 are real: https://en.wikipedia.org/wiki/List_of_IP_version_numbers