To update your institution’s IP address(es), log onto your institution’s administrator account:
> Go to: http://www.nature.com/nams/svc/mysiteaccount
> Enter your administrative username and password.
> Once logged in select the tab labelled “IP Ranges”
> To edit/add an IP range, there are three fields to update; low address, high address, description.
(The description field is used for your labelling purposes and can be anything you want.)
> After entering the high and low addresses and clicking ”Add IP Range” your IP address will appear below the “Your current IP Ranges” section.
> To edit or delete an existing range click the “Edit” link next to the IP address.
> You now have the option to modify the IP range and click “Confirm” to complete the update or click or “Delete IP Range” to remove it from your account. 
Single address (proxy server): e.g. 100.100.100.100 - would be entered with the same address as both the Low end and High end, as follows:
low: 100.100.100.100
high: 100.100.100.100
Consecutive range(s) of addresses: e.g. 100.100.100.* - 100.100.111.*
Each * represents a range from 0-255. These two consecutive ranges would be entered as follows:
low: 100.100.100.0
high: 100.100.111.255
For more help, please contact us by using our Ask a Question facility, using the drop-down menus to ensure that your enquiry goes directly to the member of staff best able to assist you.
We can also be contacted by using the details below relevant to the region in the world in which you are:
UK/ROW: e-mail - institutions@nature.com, tel - +44 (0)207 843 4759
USA: e-mail - institutions@natureny.com, tel - +1 888-331-6288
Japan, South Korea, China: Contact tel - +81 (0)3 3267 8769