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="20171110014020|1310" />
  </query-continue>
  <query>
    <blocks>
      <block id="1323" user="ガクトマン" by="Yosuke" timestamp="2019-02-16T02:58:22Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="1321" user="Botbotbotbot" by="Yosuke" timestamp="2019-02-05T01:35:23Z" expiry="infinity" reason="外部サイトへのスパムリンク追加" nocreate="" autoblock="" />
      <block id="1320" user="The Pioneer" by="Yosuke" timestamp="2019-01-05T13:14:43Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="1319" user="開拓者" by="Yosuke" timestamp="2019-01-05T13:14:10Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="1318" user="灌漑水路" by="Yosuke" timestamp="2019-01-05T13:13:33Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="1317" user="Rxy" by="Yosuke" timestamp="2019-01-05T13:12:45Z" expiry="infinity" reason="外部サイトへのスパムリンク追加" nocreate="" autoblock="" />
      <block id="1316" user=".Trashes" by="Yosuke" timestamp="2019-01-05T13:12:08Z" expiry="infinity" reason="外部サイトへのスパムリンク追加" nocreate="" autoblock="" />
      <block id="1315" user="七星" by="Yosuke" timestamp="2019-01-05T13:11:42Z" expiry="infinity" reason="外部サイトへのスパムリンク追加" nocreate="" autoblock="" />
      <block id="1313" user="ゆっくりヌオック" by="Yosuke" timestamp="2019-01-05T13:08:11Z" expiry="infinity" reason="" nocreate="" autoblock="" />
      <block id="1312" user="BiancaE264" by="Yosuke" timestamp="2017-11-10T01:40:31Z" expiry="infinity" reason="不適切な利用者名" nocreate="" autoblock="" />
    </blocks>
  </query>
</api>