NYSD court bans by IP in case of non 200 http response?

[Lezh1k]

Hello everybody.
I know this is not a juriscraper's issue but maybe somebody can help.

It seems like the "nysd" court bans by IP in case of non-200 HTTP response.

Run this request twice

curl -I -vvv 'https://ecf.nysd.uscourts.gov/cgi-bin/show_case_doc?6,632569,,,'

The first run will return 404 (not found), which is strange because this document has the next pacer_doc_id: 127036575120.
The second run always causes a connection timeout error.

I tested with HTTPS and HTTP with the same result.
Other courts return 200 even in case information was not found. So I'm not sure what's the reason.