You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query-continue>
    <blocks bkcontinue="20120714142406|6374" />
  </query-continue>
  <query>
    <blocks>
      <block id="6501" user="ULTRANEGRAS" by="Vezimas21" timestamp="2018-06-01T18:26:31Z" expiry="infinity" reason="ok" nocreate="" />
      <block id="6487" user="Anonghost" by="Fandorina" timestamp="2015-07-20T22:48:47Z" expiry="infinity" reason="vatnikas koloradinis" nocreate="" autoblock="" />
      <block id="6484" user="Panceris88" by="Fandorina" timestamp="2015-07-20T20:58:01Z" expiry="infinity" reason="Vatnikas debiloidinis" nocreate="" autoblock="" />
      <block id="6480" user="Andrius uzkalnis musoras" by="Tararaika" timestamp="2015-06-06T21:14:20Z" expiry="infinity" reason="Chemtreilai" nocreate="" autoblock="" />
      <block id="6478" user="Feltonas" by="Tararaika" timestamp="2015-06-06T21:14:13Z" expiry="infinity" reason="Chemtreilai" nocreate="" autoblock="" />
      <block id="6476" user="Dimitrijus" by="Tararaika" timestamp="2015-06-06T21:13:43Z" expiry="infinity" reason="Chemtreilai" nocreate="" autoblock="" />
      <block id="6470" user="Teisejas" by="Karvespienas" timestamp="2015-01-17T20:46:10Z" expiry="infinity" reason="į kumštuką darykit kitoje vietoje" nocreate="" autoblock="" />
      <block id="6466" user="Digas3" by="Karvespienas" timestamp="2014-11-28T10:19:38Z" expiry="infinity" reason="Piktnaudžiavimas keliomis paskyromis: Mes Jūsų traumas suprantame, bet geriau paprašykit mamytės kapeikų ir nueikite į šokius - bent pagraibyti gausite" nocreate="" autoblock="" />
      <block id="6462" user="Digas2" by="Karvespienas" timestamp="2014-11-24T20:17:31Z" expiry="infinity" reason="Nesąmonių/bet ko įterpimas į puslapius: visumoje užpisote, eikite pasionanizuoti" nocreate="" autoblock="" />
      <block id="6445" user="Giliuke5" by="Karvespienas" timestamp="2012-08-22T17:08:37Z" expiry="infinity" reason="" nocreate="" autoblock="" />
    </blocks>
  </query>
</api>