Go use this instead: https://github.com/pbowden-msft/OfficeCDNCheck

ms_cdn_tester.py

#!/usr/bin/python
"""
Go use this instead: https://github.com/pbowden-msft/OfficeCDNCheck

A script to help determine which CDN you're client is talking to for
Microsoft Office 2016 updates.

Author: Clayton Burlison <https://clburlison.com>
Date Modifed: Sept. 14th, 2016

Much code stolen from AutoPkg
https://github.com/autopkg/recipes/blob/master/MSOfficeUpdates/MSOffice2016URLandUpdateInfoProvider.py
"""

import urllib2
import plistlib

CULTURE_CODE = "0409"
BASE_URL = "https://officecdn.microsoft.com/pr/%s/OfficeMac/%s15-chk.xml"

PROD_DICT = {
    'Excel': 'XCEL',
    'OneNote': 'ONMC',
    'Outlook': 'OPIM',
    'PowerPoint': 'PPT3',
    'Word': 'MSWD',
}
CHANNELS = {
    'Production': 'C1297A47-86C4-4C1F-97FA-950631F94777',
    'InsiderSlow': '1ac37578-5a24-40fb-892e-b89d85b6dfaa',
    'InsiderFast': '4B2D7701-0A4F-49C8-B4CB-0C2D4043F51F',
}


def connect(url):
    """Use urllib2 to request a url and return the componenets."""
    req = urllib2.Request(url)
    # Add the MAU User-Agent, since MAU feed server seems to explicitly
    # block a User-Agent of 'Python-urllib/2.7' - even a blank User-Agent
    # string passes.
    req.add_header(
        "User-Agent",
        "Microsoft%20AutoUpdate/3.6.16080300 CFNetwork/760.6.3 Darwin/15.6.0 (x86_64)")

    try:
        f = urllib2.urlopen(req)
        f_headers = f.info().dict
        contents = f.read()
        code = f.getcode()
        return (code, contents, f_headers)
    except urllib2.HTTPError as e:
        return (e.code, e.read(), None)
    except urllib2.URLError as e:
        return (e, None, None)


def tester(channel="Production"):
    """This will download each product xml, output the CDN that
    your machine is talking at time of connection and which version
    the xml contains."""
    for key in PROD_DICT.keys():
        url = BASE_URL % (CHANNELS[channel],
                          CULTURE_CODE + PROD_DICT[key])
        code, content, headers = connect(url)
        if code == 200:
            # Our download was sucessful, we should have valid content
            # Limit our header to 23 characters so it prints prettier
            print("##### {0} ####################".format(key)[:23])
            print("AppID: {0}".format(PROD_DICT[key]))
            data = plistlib.readPlistFromString(content)
            version = data.get('Update Version', None)
            print("Version: {0}".format(version))
            for item in headers.keys():
                if item.lower() == "x-msedge-ref":
                    cdn = "Azure"
                elif item.lower() == "powered-by-chinacache":
                    cdn = "Powered-By-ChinaCache"
                else:
                    cdn = "Akamai"
            print("CDN: {0}".format(cdn))
        else:
            print("Error: {0}".format(code))

tester()