diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index b7d8c1ef..a71b264f 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -14,6 +14,7 @@ jobs:
         run: |
           bash google/downloader.sh
           bash amazon/downloader.sh
+          bash microsoft/downloader.sh
 
       - name: Set up Python 3.7
         uses: actions/setup-python@v2
@@ -39,9 +40,11 @@ jobs:
           # ipv4
           python utils/merge.py --source=google/ipv4.txt | sort -h > google/ipv4_merged.txt
           python utils/merge.py --source=amazon/ipv4.txt | sort -h > amazon/ipv4_merged.txt
+          python utils/merge.py --source=microsoft/ipv4.txt | sort -h > microsoft/ipv4_merged.txt
           # ipv6
           python utils/merge.py --source=google/ipv6.txt | sort -h > google/ipv6_merged.txt
           python utils/merge.py --source=amazon/ipv6.txt | sort -h > amazon/ipv6_merged.txt
+          python utils/merge.py --source=microsoft/ipv6.txt | sort -h > microsoft/ipv6_merged.txt
 
       - name: Commit files
         env:
diff --git a/microsoft/downloader.sh b/microsoft/downloader.sh
new file mode 100755
index 00000000..9ffab809
--- /dev/null
+++ b/microsoft/downloader.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# https://azure.microsoft.com/en-us/updates/service-tag-discovery-api-in-preview/
+# https://docs.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide
+# From: https://github.com/jensihnow/AzurePublicIPAddressRanges/blob/main/.github/workflows/main.yml
+
+set -euo pipefail
+set -x
+
+
+# get from public ranges
+download_and_parse() {
+    URL="$(curl -s https://www.microsoft.com/en-us/download/confirmation.aspx?id=${1} | grep -o '<a href=['"'"'"][^"'"'"']*['"'"'"]' | grep ServiceTags_ | head -1 | sed -e 's/^<a href=["'"'"']//' -e 's/["'"'"']$//')"
+    curl --connect-timeout 60 --retry 3 --retry-delay 15 -s "${URL}" > /tmp/microsoft.json
+    jq '.values[] | [.properties] | .[].addressPrefixes[] | select(. != null)' -r /tmp/microsoft.json > /tmp/microsoft-all.txt
+
+    # save ipv4
+    grep -v ':' /tmp/microsoft-all.txt >> /tmp/microsoft-ipv4.txt
+
+    # save ipv6
+    grep ':' /tmp/microsoft-all.txt >> /tmp/microsoft-ipv6.txt
+}
+
+# Public cloud
+download_and_parse "56519"
+# US Gov
+download_and_parse "57063"
+# Germany
+download_and_parse "57064"
+# China
+download_and_parse "57062"
+
+
+# sort & uniq
+sort -h /tmp/microsoft-ipv4.txt | uniq > microsoft/ipv4.txt
+sort -h /tmp/microsoft-ipv6.txt | uniq > microsoft/ipv6.txt