Mark Leonard
Mark Leonard was appointed EVP, Infrastructure Services Unit (ISU) in January 2011, and is responsible for integrating the activities of Operations, Technology and IT. Mark joined Colt as Chief Information Officer (CIO) in February 2008. He has extensive experience of IT within the telecoms sector, having held the position of CIO at Vodafone UK, IT Director at NTL, and a senior management role at IBM Global Services.
For many years IPv6 did not receive much attention as IPv4 address depletion mitigation techniques like Network Address Translation (NAT) were successfully deployed. However, IPv4 address consumption has been growing steadily and believe it or not IPv4 address exhaustion is a reality today. IANA exhausted the global IPv4 address pool February 3rd 2011 and the APNIC was the first regional registry to use up their regional IPv4 address pool on the 15th of April. The sky is not falling though ... Read more
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