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ripe-142: Supporting Notes for the European IP Address Space Request Form ripe-048: RIPE Internet Network Numbers Template
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RIPE Document Internet Network Numbers Template insert: <br />
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D.Karrenberg insert: <br />
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Aug 1992 insert: <br />
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To whom it may concern, insert: <br />
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The RIPE Network Coordination Centre now handles all requests for IP insert: <br />
network numbers from European organisations. Our aim is to provide a insert: <br />
rapid and efficient service to all European organisations. As this is insert: <br />
a recent initiative, procedures for handling network number requests are insert: <br />
in the process of being established. Therefore we apologise in advance insert: <br />
for any duplication of effort that may be required by you due to new insert: <br />
forms and templates. As the European NIC, we require different insert: <br />
information to that required by the US and for it to be presented in a insert: <br />
format which is both easy for you to complete and for us to process. insert: <br />
Before your application can be processed any further, you will need to insert: <br />
complete the enclosed templates and return them to the appropriate insert: <br />
organisation responsible for issuing IP network numbers. In most cases insert: <br />
this will be your IP service provider or the RIPE NCC. Before insert: <br />
completion of the template, please be sure to read the following text insert: <br />
and examples carefully which will guide you. insert: <br />
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A new classless IP addressing scheme called CIDR has recently been insert: <br />
adopted to cope with routing table growth and address space exhaustion insert: <br />
problems in the Internet. Under this scheme it is beneficial for insert: <br />
everyone to get their network numbers allocated via their respective insert: <br />
IP service providers. Your IP service provider is the organisation insert: <br />
providing external connectivity to your network. If you are planning insert: <br />
to connect your network to other networks outside your organisation in insert: <br />
the foreseeable future we strongly urge you to get numbers allocated insert: <br />
from your current or prospective IP service provider. Alternatively, if insert: <br />
this is not likely, then you will be allocated a number from a different insert: <br />
part of the address space by the RIPE NCC. Please pay careful attention insert: <br />
to this matter. insert: <br />
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Class A and B network numbers are a scarce resource and some insert: <br />
justification in terms of expected network size and structure will be insert: <br />
needed before such a number can be allocated. Class A numbers will only insert: <br />
be assigned to networks which technically need more than 65000 hosts to insert: <br />
be on one network number. A detailed technical justification is needed, insert: <br />
review takes place on a global scale and the allocation process can take insert: <br />
several months. Similarly due to class B scarcity, a reasonable number insert: <br />
of class C numbers will be assigned over class B. If you can engineer insert: <br />
your network to use multiple class C numbers, it is strongly advised. insert: <br />
Please note that this is contrary to earlier recommendations where it insert: <br />
was recommended to use Bs over multiple Cs due to routing table size insert: <br />
constraints. A one page document detailing the information needed by insert: <br />
the NCC to evaluate requests for class B numbers is available from the insert: <br />
NCC if it is not enclosed with this letter; this document also includes insert: <br />
a list of recommended reading about CIDR and address allocation in a ASCII and PDF insert: <br />
general. insert: <br />
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Appended to this letter is a blank template for IP number registration, insert: <br />
which we would be extremely grateful if you complete and return to the insert: <br />
appropriate organisation responsible for issuing IP network numbers. In insert: <br />
most cases this will be your IP service provider. It may of course also insert: <br />
be the RIPE NCC. insert: <br />
insert: <br />
If you have any further queries please do not hesitate to contact the insert: <br />
NCC. Please note that all queries should, if possible, be made through insert: <br />
e-mail and sent to <hostmaster@ripe.net>. If you do not have access to insert: <br />
electronic mail, then we prefer to communicate by fax rather than by insert: <br />
ordinary mail. You can reach us at: insert: <br />
insert: <br />
Kruislaan 409 Phone: +31 20 592 5065 insert: <br />
NL-1098 SJ Amsterdam Telefax: +31 20 592 5090 insert: <br />
The Netherlands insert: <br />
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If we do not hear from you in the near future we will assume that you insert: <br />
have contacted your IP service provider. insert: <br />
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Yours sincerely, insert: <br />
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The RIPE NCC staff

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