El métodos de consulta es sencillo, con una simple consulta a algunos registros TXT de DNS puedes obtener los bloques IP.
Sitio de referencia de google: https://support.google.com/a/answer/60764?hl=en
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Saludos!
[root@sysmon01 ~]# yowsup-cli registration --requestcode voice --phone 549112395XXXX --cc 54
yowsup-cli v2.0.15
yowsup v2.5.0
Copyright (c) 2012-2016 Tarek Galal
http://www.openwhatsapp.org
This software is provided free of charge. Copying and redistribution is encouraged.
If you appreciate this software and you would like to support future development please consider donating:
http://openwhatsapp.org/yowsup/donate
INFO:yowsup.common.http.warequest:{"status":"fail","reason":"old_version"}
INFO:yowsup.common.http.warequest:{"status":"fail","reason":"old_version"}
status: fail
reason: old_version
[root@sysmon01 ~]# yowsup-cli demos -c /root/yowsup-cli.conf -s 5491140XXXXX 'Prueba'
yowsup-cli v2.0.15
yowsup v2.5.0
Copyright (c) 2012-2016 Tarek Galal
http://www.openwhatsapp.org
This software is provided free of charge. Copying and redistribution is encouraged.
If you appreciate this software and you would like to support future development please consider donating:
http://openwhatsapp.org/yowsup/donate
/usr/lib/python2.6/site-packages/yowsup2-2.5.0-py2.6.egg/yowsup/demos/sendclient/stack.py:33: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
print("Authentication Error: %s" % e.message)
Authentication Error: not-authorized