| keypeople = Lieutenant Colonel Keith Bell, Head of DINSA
| keypeople = Lieutenant Colonel Keith Bell, Head of DINSA
}}
}}
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'''DINSA''' ('''Defence Interoperable Network Services Authority''') is the U.K.'s authority for domain naming and [[IP Address]] allocation. All IP address ranges used within networks and systems are allocated by DINSA.<ref>[http://www.mod.uk/NR/rdonlyres/DD848025-BF03-4CDF-8040-F476C5C0939E/0/20090302_1023Domain_Naming_and_IP_Addressing_v1_2U.pdf mod.uk]</ref>
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The naming and addressing principles and rules to be used throughout MOD,UK infrastructure are defined in the JSP 457 - The Defence Manual Of Interoperable Network and Enabling Services.
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Defence Public Key Infrastructure (DPKI) of the UK comes under DINSA and is managed by DPMA( DPKI Policy Management Authority).<ref>[http://www.mod.uk/NR/rdonlyres/D791D9F7-1F9E-4D69-A307-A7BFA2E20A97/0/UK_MOD_DPKI_CPDINSAV3_0.pdf mod.uk]</ref> DPMA is assisted by DPKI Techinal Advisory Group, Certificate Management Authority and Certification Authority.
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The Public Key Infrastructure(PKI) solution of the MoD, UK is licensed by Entrust Inc.<ref>[http://www.entrust.com/news/index.php?s=43&item=56 entrust.com]</ref>