asciinemaAs of today asciinema.org blocks all traffic coming from all Azure CIDRs due to the abuse coming from there.
adingbatponder 
👾@asciinema what is a CIDR ?
@adingbatponder more or less an IP address block
Dec [{(
)}]@adingbatponder @asciinema
Classless Inter-Domain Routing, as explained here:
https://www.ripe.net/about-us/press-centre/understanding-ip-addressing/
Example: 192.0.2.0/24 = every address from 192.0.2.0 to 192.0.2.255 (total 256)
In the very early days, sets of IP address allocations for networks were divided up by class, using mostly 3 fixed-length prefixes:
/24 = "Class C"
/16 = "Class B"
/8 = "Class A"
This resulted in a lot of wasted addresses, if a network wasn't using all of their block.
Hence the new way was called 'Classless'.
Caleb Maclennan@asciinema Is this GitHub Actions abuse or something else?
@alerque yes, automated anonymous uploads (thousands per day) from GH Actions runners.
@asciinema GHA has terrible security properties and for the last few month or so has been quite unstable (simple light jobs getting killed for resources, the container file systems disappearing half way through jobs, etc.) so it isn't super surprising ta hear it is being abused.