Billing communications addressed to the customer are addressed to the corresponding billing contact indicated by the customer in his account. Communications to Twilio are copied to firstname.lastname@example.org, Attn: General Counsel. (a) Except as provided in Section 4 (Access and Use of Our Services), you agree not to transfer, resell, transfer, transfer, concede, concede, or other services to third parties or offer them to third parties. (b) You will not attempt to use our services to access emergency services or grant them access to emergency services, unless you do so in accordance with the terms and conditions of Twilio Inc. 911 – and they agree. (c) You will ensure that our services are used in accordance with all applicable third-party laws and rights, as well as these conditions and the Twilio AUP in the current version. (d) You ensure that we are entitled to use your customer data, including the content of communications, where necessary for the provision of our Services, and that we do not use our services in a manner contrary to applicable legislation. (e) To the extent that the law is not authorized, you will not redevel, decompile, decompilate or otherwise create the source code of the software provided in conjunction with our Services, you will not attempt to create or deduce it, or to authorize or support others. (f) If you have acquired a short code, you will not change the use of this short code for use indicated in your application to the carrier, without first receiving a change to your application, or re-applying for short code authorization from the carrier under new use. (g) We reserve the right to retrieve each phone number from your account and return it to the corresponding numbering plan if you do not send enough traffic via that phone number, so that the phone number is underutilized or unbalanced, as defined by any local, federal and/or national regulatory authority and/or government organization that oversees the phone number and the numbering plan.