...
- https://connect.serp.ac.uk
- alpha.connect.serp.ac.uk
- beta.connect.serp.ac.uk
- gamma.connect.serp.ac.uk
- delta.connect.serp.ac.uk
- 137.44.141.60/30
For the legacy service:
- offsite.connect.ukserp.ac.uk
- 137.44.141.43
HTTP(s) traffic can be via a proxy as long as HTTPS inspection (man in the middle) is not used.