Correct, newshosting is a usenet provider, not a indexer. Providers go into your usenet downloader (NZBGet, SABnzbd, etc.) while indexers can be used in automation tools like r/Sonarr , r/Radarr , etc.
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World's Best Usenet Access Provider - NewsgroupDirect
How to configure CouchPotato V2? - SmartHomeBeginner Aug 12, 2012 SABnzbd - Wiki - NZB Sources Raw search engines. These are classic search engines that index and give you results by keywords. No human influence, which means little-to-no logic filtering out bad posts (spam/virus/password protected/etc) or un-obfuscating encrypted posts.
Newshosting was founded in 1999 and is a provider of multiple online services, including a VPN. Its main product is the Usenet service, which provides access to over 100,000 newsgroups. The CEO is listed as Thomas S. Miller.
usenet/sonarr question - Lounge - Unraid May 12, 2016 World's Best Usenet Access Provider - NewsgroupDirect