Changes

国家电信和信息管理局（NTIA）是隶属于美国[[DOC|商务部]] 的一家机构，在与ICANN及威瑞信达成的一份合约中代表联邦政府，赋予ICANN和威瑞信各自管理根区域绩效的职能。NTIA负责审核和批准需要在根区域内部执行的任何变更。<ref>[http://www.icann.org/en/committees/dns-root/root-scaling-study-report-31aug09-en.pdf www.icann.org]</ref>

国家电信和信息管理局（NTIA）是隶属于美国[[DOC|商务部]] 的一家机构，在与ICANN及威瑞信达成的一份合约中代表联邦政府，赋予ICANN和威瑞信各自管理根区域绩效的职能。NTIA负责审核和批准需要在根区域内部执行的任何变更。<ref>[http://www.icann.org/en/committees/dns-root/root-scaling-study-report-31aug09-en.pdf www.icann.org]</ref>

ICANN is the operator of the [[IANA|Internet Assigned Numbers Authority]] (IANA), which is responsible for the day-to-day management of the DNS root zone. IANA assigns the operators of the top level domain and ensures the maintenance and the administrative details of the TLDs.<ref>[http://tools.ietf.org/html/rfc1591 RFC 1591]</ref><ref> [http://www.iana.org/domains/root/ Root Zone Management]</ref> It is also responsible for the coordination of the [[IP|Internet Protocol]] (IP) and [[ASN|Autonomous System Numbers]] (ASN) to the [[RIR|Regional Internet Registries]] (RIR).

ICANN[[IANA|互联网号码分配机构]](IANA)的运营商，IANA负责DNS根区域的日常管理工作。IANA指派顶级域的运营商并确保顶级域的维护和具体管理工作。<ref>[http://tools.ietf.org/html/rfc1591 RFC 1591]</ref><ref> [http://www.iana.org/domains/root/ Root Zone Management]</ref>它还负责互[[IP|联网协议]](IP)及[[ASN|自制系统编号]] (ASN)至[[RIR|区域性互联网注册局]](RIR)的协调。

Verisign, and formerly [[Network Solutions]], serves as the root zone administrator under a cooperative agreement entered with the United States government; this has been in effect since 1998.

Verisign, and formerly [[Network Solutions]], serves as the root zone administrator under a cooperative agreement entered with the United States government; this has been in effect since 1998.