Simple Whitelisting - UK
If you are comfortable with using wildcard whitelist entries, then we'd recommend you simply allow HTTP and HTTPS access to *.twinkl.co.uk and *.twinkl.com.
Using these wildcard whitelist entries will ensure access is allowed for all our currently used sub-domains, plus any additional ones we may begin to use as Twinkl continually develops.
Granular Whitelisting - UK
If you prefer to use a granular whitelist approach, being happy to occasionally review your policy as we add additional site functionality, then we'd currently recommend the following domains/sub-domains are whitelisted for HTTP and HTTPS traffic to ensure full site functionality:
Whitelisting Considerations for International Users
In addition to the standard whitelisting recommendations above, if you support users from other geographical regions or users who may use one or more of our country specific websites then you may also want to whitelist HTTP & HTTPS access to one or more of our geographical TLD (top level domains).
For Australia: www.twinkl.com.au / twinkl.com.au , plus either *.twinkl.com.au, *.twinkl.co.uk and *.twinkl.com (simple approach) or the domains / sub-domains listed on the granular domains list (granular approach).
For Ireland: www.twinkl.ie / twinkl.ie plus, either (*.twinkl.com.au, *.twinkl.co.uk and *.twinkl.com) or the domains / sub-domains listed on the granular domains list (granular approach).
Getting Further Help
If you require further help understanding or applying whitelisting settings for Twinkl then our TwinklCares team will be able to direct you further. Just get in contact, making sure you provide a screenshot of any issues you are having. We may need to ask you for more screenshots or arrange a telephone call with our technical team as part of the support process.