Because you requested the table using a browser (rather then an NTRIP Client) it has been returned to you as an HTML page.
SOURCETABLE 200 OK Server: SubCarrier Systems Corp SNIP simpleNTRIP_Caster_[wLITE]R3.17.00/of:Dec 12 2024 Date: Tue, 15 July 2025 11:42:34 UTC Content-Type: text/plain Content-Length: 222 STR;RVREF;Radohova vas;RTCM 3.0;1004(1),1006(10),1008(10),1013(15);3;GPS;SNIP;SVN;45.95;14.86;1;0;sNTRIP;none;N;N;0;none; NET;SNIP;Boris B.;N;N;multibox.nohost.me;85.10.23.230:2101;boris.bilc@gmail.com;; ENDSOURCETABLE
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