3GPP 3rd Generation Partnership Project (cellular SDO responsible for GSM, W-CDMA, LTE, etc.)
3GPP2 3rd Generation Partnership Project 2 (cellular SDO responsible for CDMA2000, EV-DO, etc.)
6rd IPv6 Rapid Deployment (an IPv6 transition mechanism in which IPv6 traffic is carried over IPv4 networks, similar to 6to4 but using IPv6 prefix assignments based on unicast address assignments)
6to4 Six to Four (carrying IPv6 traffic in IPv4 tunnels, some operational challenges have occurred)
A Address (IPv4) (DNS RR carrying an IPv4 address)
AAA Authentication, Authorization and Accounting (management capabilities associated with certain access protocols such as RADIUS and Diameter)
AAAA Address (IPv6) (DNS RR carrying an IPv6 address) ...