世界各国域名:(共计236各国家)ad:Andorra,安道尔ae:UnitedArabEmirates,阿联酋af:Afghanistan,阿富汗ag:AntiguaandBarbuda,安提瓜和巴布达ai:Anguilla,安格拉al:Albania,阿尔巴尼亚am:Armenia,亚美尼亚an:NetherlandsAntilles,荷兰属地ao:Angola,安哥拉aq:Antarctica,南极洲ar:Argentina,阿根廷as:AmericanSamoa,东萨摩亚at:Austria,奥地利au:Australia,澳大利亚aw:Aruba,阿鲁巴az:Azerbaijan,阿塞拜疆ba:BosniaHercegovina,波黑bb:Barbados,巴巴多斯bd:Bangladesh,孟加拉国be:Belgium,比利时bf:BurkinaFaso,布基纳法索bg:Bulgaria,保加利亚bh:Bahrain,巴林bi:Burundi,布隆迪bj:Benin,贝宁bm:Bermuda,百慕大bn:BruneiDarussalam,文莱达鲁萨兰国bo:Bolivia,玻利维亚br:Brazil,巴西bs:Bahamas,巴哈马bt:Bhutan,不丹bv:BouvetIsland,布韦群岛bw:Botswana,伯兹瓦纳by:Belarus,白俄罗斯bz:Belize,伯利兹ca:Canada,加拿