# How do I register an IPv6 address?

**URL:** <http://forum.companieshouse.gov.uk/t/how-do-i-register-an-ipv6-address/668>\
**Category:** Uncategorized\
**Created:** [July 11, 2016, 12:28am UTC](http://forum.companieshouse.gov.uk/t/how-do-i-register-an-ipv6-address/668 "2016-07-11T00:28:17Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![csmith](http://forum.companieshouse.gov.uk/user_avatar/forum.companieshouse.gov.uk/csmith/32/8_2.png) [@csmith](http://forum.companieshouse.gov.uk/u/csmith)\
**Post date:** [July 11, 2016, 10:28am UTC](http://forum.companieshouse.gov.uk/t/how-do-i-register-an-ipv6-address/668/2 "2016-07-11T10:28:27Z")

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You don’t have to register an IPv6 IP for access. The whitelist functionality provided in the API registration is only really useful if you are trying to protect your API key if you are using a browser-run Javascript client. See

> [@IP range whitelisting](http://forum.aws.chdev.org/t/ip-range-whitelisting/635/2):
>
> The IP address whitelisting is generally for Javascript clients only, where the API key will be visible to the client and therefore not “secret”. Thus, it doesn’t make sense to use this for server-side API access. If you’re calling the API from the server and not client-side javascript, then your API key remains private and you don’t need to employ whitelisting. Have you implemented client or server-side calls to our API?

At the moment we do not support IPv6 whitelisting as complete end-to-end IPv6 infrastructure is rare, and we have always found that browser based Javascript accesses to our API do not come from IPv6 only hosts (or at least, we always get an IPv4 address).

Hope that helps.

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