It is most likely an IPv4, and you should be relatively thankful that you have one; the finite amount of addresses created are almost running out. In lieu of this soon-to-be crisis, we have decided to present as much information as we could scrounge in order to bring to light what might happen when connectivity in the near future is halted and/or a solution to stop the issue before it becomes serious.
Since the beginning of internet connectivity, mankind had been running on a limited amount of IP (Internet Protocol) addresses that were created due to limitations of the technology at the time. After computers started becoming a commodity in homes, it was predicted that IPv4s would eventually run out-sometime in 2011. While the estimations were a tad off, as we approach the end of 2015, we are also approaching the end of IPv4s.
BACKSTORY
With the advancement of technology and its components in this day in age, IP addresses have also evolved. The next version in the chain, known as the IPv5, is known more commonly as Internet Streaming Protocol. The Internet Stream Protocol family was never introduced for public use, but many of the concepts available in ST are similar to later Asynchronous Transfer Mode protocols and can be found in Multiprotocol Label Switching (MPLS). After that came the IPv6, a 128 bit variant of IP address. The main advantage: 340 undecillion (340,000,000,000,000,000,000,000,000,000,000,000,000) unique addresses.
THE DILEMMA
As with any new or upcoming advancements, there are some issues. With a majority of the population running on IPv4s, anyone on an IPv6 address is unable to communicate with them and vice versa. As a society, we must choose to either stay with the limited amount of IPv4s, which are near full capacity, or upgrade to the better IPv6 and possibly lose connectivity with some devices.