This one is pretty good:

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https://sport-tv-guide.live/

Also have a useful app for the phone.

For American Sports https://www.livesportsontv.com https://sportsgamestoday.com

For Soccer ( you can see what channel the games are on for USA or international channels) https://m.livesoccertv.com

i only know of titantv.com, but it's not worldwide

I use an app called 'live sports tv guide' by molbile2ds which works really well

Use the Live Soccer TV app or 365sports app

https://apps.apple.com/ie/app/live-football-tv-live-scores/id874726939

liveonsat.com or sporteventz.com

App. Sporteventz

Live Guide app, choose your countries, favourite sports etc

Also the LiveonSat website.

Live Guide is what I use.

SofaScores app normally shows which channels the matches are being played in each country. I use it for searching for Tennis.