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| 7103d4 | Jason Tubnor | 2025-12-16 12:07:07 | 1 | # Documentation IPs |
| 2 | ||||
| 3 | **Date:** 20251216 |
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| 4 | ||||
| 5 | **Scope:** |
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| 7 | RFC documents prescribe the IP address blocks to be used for documentation. This document breaks this down in how and what subnets from the RFC are used for documentation on this site. |
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| 9 | **IPv6** |
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| 11 | The [RFC 3849](https://www.rfc-editor.org/info/rfc3849) released in July 2004 prescribes the 2001:db8::/32 prefix for IPv6 documentation. While [RFC 9637](https://www.rfc-editor.org/info/rfc9637) from August 2024 has expanded this to the 3fff::/20, allowing for the documentation of larger network designs, this is out of scope for this wiki. |
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| 13 | Documentation for IPv6 here will use: |
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| 14 | ``` |
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| 15 | 2001:db8::/32 |
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| 16 | ``` |
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| 17 | **IPv4 (Legacy)** |
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| 19 | The [RFC 5737](https://www.rfc-editor.org/info/rfc5737) released in January 2010 prescribes the 192.0.2.0/24 (TEST-NET-1), 198.51.100.0/24 (TEST-NET-2) and 203.0.113.0/24 (TEST-NET-3) prefixes for IPv4 documentation. |
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| 21 | Documentation for IPv4 here will use: |
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| 22 | ``` |
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| 23 | 203.0.113.0/24 (external) |
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| 24 | 198.51.100.0/24 (internal) |
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| 25 | ``` |
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| 27 | ==End of Document== |