Looks like my ISP is blocked again.
188.214.8.0/21
https://whois-dev.toolforge.org/w/188.214.8.0/lookup
This was previously opened up in [1], but I guess it doesn't cover all relevant ranges.
Hyperoptic is ASN 56478
https://mxtoolbox.com/SuperTool.aspx?action=asn%3a56478&run=toolpage
56478 Hyperoptic Ltd 188.172.144.0/20 56478 Hyperoptic Ltd 188.210.208.0/21 56478 Hyperoptic Ltd 188.210.212.0/22 56478 Hyperoptic Ltd 188.214.8.0/21