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transmissionbt.com (A bittorrent client for macOS) is out ranking youtube, wikipedia, github, etc. Is transmission that popular? I assume its the auto-updater?

transmissionbt.com (A bittorrent client for macOS) is out ranking youtube, wikipedia, github, etc. Is transmission that popular? I assume its the auto-updater? Seems insane. https://github.com/Quad9DNS/quad9-domains-top500/blob/dfd5131a3e623de121e80ceef6363305376169d6/top500-2025-07-10.json#L41 https://github.com/Quad9DNS/quad9-domains-top500/blob/dfd513...

JdeBP 1y ago
If people have naïvely configured their BIND client libraries to talk directly to Quad9, instead of via a machine-local forwarding caching proxy DNS server, then libcurl can be sending a re-query out to Quad9 every 60 seconds for domains that it actively needs to map to IP addresses. * https://curl.se/libcurl/c/CURLOPT_DNS_CACHE_TIMEOUT.html https://curl.se/libcurl/c/CURLOPT_DNS_CACHE_TIMEOUT.html Excessive DNS traffic and the interaction with libcurl and with not having a machine-local forwarding caching proxy DNS server, is a known and open issue with that software. * https://github.com/transmission/transmission/issues/1815 https://github.com/transmission/transmission/issues/1815 Having a machine-local forwarding caching proxy DNS server is in general a good idea. It provides exactly the sort of traffic concentration and redundancy elimination that is required by libcurl's 60 second re-queries, which is otherwise still traffic going out over a gateway even when Quad9 is co-located with one's ISP. * https://jdebp.uk/FGA/dns-server-roles.html#ChoosingProxy https://jdebp.uk/FGA/dns-server-roles.html#ChoosingProxy
umpalumpaaa 1y ago
Its available for Linux and Windows as well.
- mekster 1y ago
  So are YouTube, Wikipedia and GitHub.
  - umpalumpaaa 1y ago
    I was responding to "A bittorrent client for macOS" - I wanted to make it clear that the client is not only available on macOS.
yegle 1y ago
It's likely the port open check that's built-in: https://portcheck.transmissionbt.com/443 https://portcheck.transmissionbt.com/443
VladVladikoff 1y ago
My guess is that DNS caching in web browsers prevents repeated lookup requests where as maybe the transmission implementation has no caching and does a lookup every time.
- GCUMstlyHarmls 1y ago
  That makes the most sense.
1vuio0pswjnm7 1y ago
No JS: https://raw.githubusercontent.com/Quad9DNS/quad9-domains-top500/dfd5131a3e623de121e80ceef6363305376169d6/top500-2025-07-10.json https://raw.githubusercontent.com/Quad9DNS/quad9-domains-top...

JdeBP 1y ago

If people have naïvely configured their BIND client libraries to talk directly to Quad9, instead of via a machine-local forwarding caching proxy DNS server, then libcurl can be sending a re-query out to Quad9 every 60 seconds for domains that it actively needs to map to IP addresses. * https://curl.se/libcurl/c/CURLOPT_DNS_CACHE_TIMEOUT.html https://curl.se/libcurl/c/CURLOPT_DNS_CACHE_TIMEOUT.html Excessive DNS traffic and the interaction with libcurl and with not having a machine-local forwarding caching proxy DNS server, is a known and open issue with that software. * https://github.com/transmission/transmission/issues/1815 https://github.com/transmission/transmission/issues/1815 Having a machine-local forwarding caching proxy DNS server is in general a good idea. It provides exactly the sort of traffic concentration and redundancy elimination that is required by libcurl's 60 second re-queries, which is otherwise still traffic going out over a gateway even when Quad9 is co-located with one's ISP. * https://jdebp.uk/FGA/dns-server-roles.html#ChoosingProxy https://jdebp.uk/FGA/dns-server-roles.html#ChoosingProxy

umpalumpaaa 1y ago

Its available for Linux and Windows as well.

mekster 1y ago
So are YouTube, Wikipedia and GitHub.
- umpalumpaaa 1y ago
  I was responding to "A bittorrent client for macOS" - I wanted to make it clear that the client is not only available on macOS.

yegle 1y ago

It's likely the port open check that's built-in: https://portcheck.transmissionbt.com/443 https://portcheck.transmissionbt.com/443

VladVladikoff 1y ago

My guess is that DNS caching in web browsers prevents repeated lookup requests where as maybe the transmission implementation has no caching and does a lookup every time.

GCUMstlyHarmls 1y ago
That makes the most sense.

1vuio0pswjnm7 1y ago

No JS: https://raw.githubusercontent.com/Quad9DNS/quad9-domains-top500/dfd5131a3e623de121e80ceef6363305376169d6/top500-2025-07-10.json https://raw.githubusercontent.com/Quad9DNS/quad9-domains-top...