ce182b93fb077cf9cf47d7673d3f6a2473d4c7eb
howto/Getting-started.md
... | ... | @@ -82,17 +82,19 @@ You may choose your network prefix in one of the currently open netblocks. You c |
82 | 82 | |
83 | 83 | | Size | Comment | |
84 | 84 | |-----:|:-------------------------| |
85 | -| /23 | maximum allocation size! | |
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86 | 85 | | /24 | are you an organization? | |
87 | -| /25 | default-_ish_ | |
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86 | +| /25 | still a lot of IPs! | |
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88 | 87 | | /26 | usually enough | |
88 | +| /27 | default allocation | |
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89 | +| /28 | usually enough | |
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90 | +| /29 | starter pack | |
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89 | 91 | |
90 | -The current guideline is to allocate a /25 or smaller by default, keeping space for up to a /23 if possible. Don't allocate more than a /23 worth of addresses and please **think before you allocate**: If you are going to have 2-3 servers and two VPN-spaces, a /26 is enough to suit your needs. Same will go for most home-networks. This is not public internet, but our IPv4-space is valuable too! |
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92 | +The current guideline is to allocate a /27 or smaller by default, keeping space for up to a /26 if possible. Don't allocate more than a /24 worth of addresses and please **think before you allocate**: If you are going to have 2-3 servers and two VPN-spaces, a /28 is enough to suit your needs. Same will go for most home-networks. This is not public internet, but our IPv4-space is valuable too! |
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91 | 93 | |
92 | -For example, if there is no /25 free, you can split up a /24 into two /25. If you are looking for a /25 but there are none showing in the Open Netblocks tool, instead pick one of the /24 and click Take it! |
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93 | -When registering your inetnum, instead of writing 172.2x.xxx.0-172.2x.xxx.255 then you can write 172.2x.xxx.0-172.2x.xxx.127. This will get you a /25 and save our IP space for others. |
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94 | +For example, if there is no /27 free, you can split up a /26 into two /27. If you are looking for a /27 but there are none showing in the Open Netblocks tool, instead pick one of the /26 and click Take it! |
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95 | +When registering your inetnum, instead of writing 172.2x.xxx.0-172.2x.xxx.63 then you can write 172.2x.xxx.0-172.2x.xxx.31. This will get you a /27 and save our IP space for others. |
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94 | 96 | |
95 | -To register for example 172.20.150.0/26, you need to fill in 172.20.150.0-172.20.150.63. |
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97 | +To register for example 172.20.150.0/27, you need to fill in 172.20.150.0-172.20.150.31. |
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96 | 98 | |
97 | 99 | **Note:** Reverse DNS works with _any_ prefix length, as long as your [recursive nameserver](/services/DNS) supports [RFC 2317](https://www.ietf.org/rfc/rfc2317.txt). Don't go for a /24 _just to have RDNS_. |
98 | 100 |