Root Zone
Root Zone refers to the top of the Domain Name System (DNS). It contains the names and the numeric IP addresses for all the top level domain names such as the gTLDs .com, .net, .org, .jobs, all the country code top level domains (ccTLDs) for example .us, .uk .ph including the entire list of all the root servers.[1]
The administration of DNS root zone is handled by the Internet Assigned Numbers Authority (IANA). Its functions include assigning the operators of top level domains and maintenance of the technical and administrative details of the TLDs.[2]
Root Server Operators
The data base of the root zone contains the records of the operators of the gTLDs and ccTLDs.The root server operator include:[3]
- A - VeriSign Global Registry Services
- B - Information Sciences Institute
- C - Cogent Communications
- D - University of Maryland
- E - NASA Ames Research Center
- F - Internet Systems Consortium, Inc.
- G - U.S. DOD Network Information Center
- H - U.S. Army Research Lab
- I - Autonomica/NORDUnet
- J - VeriSign Global Registry Services
- K - RIPE NCC
- L - ICANN
- M - WIDE Project