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>
    <globalblocks bgstart="2019-08-17T14:52:24Z" />
  </query-continue>
  <query>
    <globalblocks>
      <block id="138" address="198.14.216.235" by="GreenReaper" bywiki="en" timestamp="2022-11-24T22:23:53Z" expiry="2023-11-24T22:23:53Z" reason="Vandalism" />
      <block id="137" address="184.170.246.0/24" by="GreenReaper" bywiki="en" timestamp="2020-09-22T21:27:49Z" expiry="infinity" reason="Vandalism: Server IP range" />
      <block id="136" address="184.75.208.0/20" by="GreenReaper" bywiki="en" timestamp="2020-09-22T21:24:01Z" expiry="infinity" reason="Vandalism: Server IP range" />
      <block id="135" address="104.140.0.0/16" by="GreenReaper" bywiki="en" timestamp="2020-09-22T21:15:26Z" expiry="infinity" reason="Server IP range" />
      <block id="134" address="104.206.12.0/24" by="GreenReaper" bywiki="en" timestamp="2020-09-22T21:13:14Z" expiry="infinity" reason="Server IP range" />
      <block id="132" address="185.253.97.167" by="GreenReaper" bywiki="en" timestamp="2019-12-01T12:13:08Z" expiry="infinity" reason="Spam/Proxy IP" />
      <block id="131" address="2A03:E600:100:0:0:0:0:14" by="GreenReaper" bywiki="en" timestamp="2019-12-01T12:00:17Z" expiry="infinity" reason="Crosswiki abuse: Tor proxy IP" />
      <block id="130" address="185.245.84.202" by="GreenReaper" bywiki="en" timestamp="2019-12-01T11:59:06Z" expiry="infinity" reason="Crosswiki abuse: Apparent proxy IP based on spam reports" />
      <block id="129" address="64.120.114.169" by="GreenReaper" bywiki="en" timestamp="2019-12-01T11:56:44Z" expiry="infinity" reason="Proxy IP address space" />
      <block id="128" address="212.117.160.0/19" by="GreenReaper" bywiki="en" timestamp="2019-08-18T00:07:43Z" expiry="infinity" reason="Crosswiki abuse: Proxy IP address space" />
    </globalblocks>
  </query>
</api>