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Ubuntu 官方更新服务器（欧洲，此为官方源，国内较慢，但无同步延迟问题，电信网通用户可以使用)：
deb http://archive.ubuntu.com/ubuntu/ natty main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ natty-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ natty-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ natty-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ natty main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ natty-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ natty-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse Ubuntu官方提供的其他软件（第三方闭源软件等）： deb http://archive.canonical.com/ubuntu/ natty partner deb http://extras.ubuntu.com/ubuntu natty main
骨头兄亲自搭建并维护这个Ubuntu源（该源位于浙江杭州百兆共享宽带的电信机房)，包含 Deepin 等镜像：
deb http://ubuntu.srt.cn/ubuntu/ natty main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ natty-security main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ natty-updates main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ natty-proposed main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ natty-backports main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ natty main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ natty-security main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ natty-updates main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ natty-backports main restricted universe multiverse
网易163更新服务器（广东广州电信联通双线服务器，原 CN99 跳转到此），包含其他开源镜像：
deb http://mirrors.163.com/ubuntu/ natty main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ natty-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ natty-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ natty-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ natty-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ natty main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ natty-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ natty-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ natty-backports main restricted universe multiverse
搜狐更新服务器（山东联通服务器，官方中国大陆地区镜像跳转至此） ，包含其他开源镜像：
deb http://mirrors.sohu.com/ubuntu/ natty main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ natty-security main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ natty-updates main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ natty-proposed main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ natty-backports main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ natty main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ natty-security main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ natty-updates main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ natty-backports main restricted universe multiverse
LupaWorld更新服务器（浙江杭州电信联通双线服务器），包含其他开源镜像：
deb http://mirror.lupaworld.com/ubuntu natty main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu natty-security main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu natty-updates main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu natty-backports main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu natty-proposed main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu natty main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu natty-security main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu natty-updates main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu natty-backports main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu natty-proposed main restricted universe multiverse
Geekbone.org 更新服务器（上海电信服务器，由 SHLUG /上海Linux用户群维护），包含 Debian 等其他镜像：
deb http://mirrors.geekbone.org/ubuntu natty main restricted universe multiverse deb http://mirrors.geekbone.org/ubuntu natty-security main restricted universe multiverse deb http://mirrors.geekbone.org/ubuntu natty-updates main restricted universe multiverse deb http://mirrors.geekbone.org/ubuntu natty-backports main restricted universe multiverse deb http://mirrors.geekbone.org/ubuntu natty-proposed main restricted universe multiverse deb-src http://mirrors.geekbone.org/ubuntu natty main restricted universe multiverse deb-src http://mirrors.geekbone.org/ubuntu natty-security main restricted universe multiverse deb-src http://mirrors.geekbone.org/ubuntu natty-updates main restricted universe multiverse deb-src http://mirrors.geekbone.org/ubuntu natty-backports main restricted universe multiverse deb-src http://mirrors.geekbone.org/ubuntu natty-proposed main restricted universe multiverse
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OSQDU 更新服务器（青岛移动服务器，由 OSQDU维护，位于青岛大学），包含 Opera, CPAN, CTAN, IETF, Cygwin, 马克思主义文库等其他镜像 北方地区访问速度较快，2.155Gbps带宽：
deb http://mirror.osqdu.org/ubuntu natty main restricted universe multiverse deb http://mirror.osqdu.org/ubuntu natty-security main restricted universe multiverse deb http://mirror.osqdu.org/ubuntu natty-updates main restricted universe multiverse deb http://mirror.osqdu.org/ubuntu natty-backports main restricted universe multiverse deb http://mirror.osqdu.org/ubuntu natty-proposed main restricted universe multiverse deb-src http://mirror.osqdu.org/ubuntu natty main restricted universe multiverse deb-src http://mirror.osqdu.org/ubuntu natty-security main restricted universe multiverse deb-src http://mirror.osqdu.org/ubuntu natty-updates main restricted universe multiverse deb-src http://mirror.osqdu.org/ubuntu natty-backports main restricted universe multiverse deb-src http://mirror.osqdu.org/ubuntu natty-proposed main restricted universe multiverse
Ylmf OS 更新服务器（广东东莞电信联通双线服务器）：
deb http://archive.ylmf.net/ubuntu natty main restricted universe multiverse deb http://archive.ylmf.net/ubuntu natty-security main restricted universe multiverse deb http://archive.ylmf.net/ubuntu natty-updates main restricted universe multiverse deb http://archive.ylmf.net/ubuntu natty-backports main restricted universe multiverse deb http://archive.ylmf.net/ubuntu natty-proposed main restricted universe multiverse deb-src http://archive.ylmf.net/ubuntu natty main restricted universe multiverse deb-src http://archive.ylmf.net/ubuntu natty-security main restricted universe multiverse deb-src http://archive.ylmf.net/ubuntu natty-updates main restricted universe multiverse deb-src http://archive.ylmf.net/ubuntu natty-backports main restricted universe multiverse deb-src http://archive.ylmf.net/ubuntu natty-proposed main restricted universe multiverse
常州贝特康姆软件技术有限公司 更新服务器（江苏常州电信服务器），包含其他开源镜像：
deb http://centos.bitcomm.cn/ubuntu natty main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu natty-security main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu natty-updates main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu natty-backports main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu natty-proposed main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu natty main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu natty-security main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu natty-updates main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu natty-backports main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu natty-proposed main restricted universe multiverse
以下为教育网服务器（推荐教育网用户使用，部分非教育网用户也有可观的速度。教育网用户请优先使用IPv6地址）
厦门大学更新服务器，由厦门大学信息与网络中心维护，包含其他开源镜像：
deb http://mirrors.xmu.edu.cn/ubuntu/archive/ natty main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-backports restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-proposed main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-security main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-updates main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ natty main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-backports main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-proposed main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-security main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ natty-updates main restricted universe multiverse
- IPv6地址
deb http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty main restricted universe multiverse deb http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-backports restricted universe multiverse deb http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-proposed main restricted universe multiverse deb http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-security main restricted universe multiverse deb http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-updates main restricted universe multiverse deb-src http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty main restricted universe multiverse deb-src http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-backports main restricted universe multiverse deb-src http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-proposed main restricted universe multiverse deb-src http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-security main restricted universe multiverse deb-src http://mirrors.xmu6.edu.cn/ubuntu/archive/ natty-updates main restricted universe multiverse
北京交通大学更新服务器，由北京交通大学信息中心赞助，包含其他开源镜像 ：
deb http://mirror.bjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
- IPv6地址
deb http://mirror6.bjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
东北大学更新服务器，包含其他开源镜像：
deb http://ftp.neu.edu.cn/mirrors/ubuntu/ natty main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-backports main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-proposed main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-security main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-updates main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ natty main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-backports main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-security main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ natty-updates main multiverse restricted universe
- IPv6地址
deb http://ftp.neu6.edu.cn/mirrors/ natty main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ natty-backports main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ natty-proposed main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ natty-security main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ natty-updates main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ natty main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ natty-backports main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ natty-proposed main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ natty-security main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ natty-updates main multiverse restricted universe
大连理工大学更新服务器，包含其他开源镜像：
deb http://mirror.dlut.edu.cn/ubuntu/ natty main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ natty-security main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ natty-updates main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ubuntu natty-backports main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ natty main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ natty-security main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ natty-updates main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ natty-backports main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse
成都市 电子科技大学更新服务器，仅包括 Ubuntu 镜像：
deb http://ubuntu.uestc.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://ubuntu.uestc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://ubuntu.uestc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://ubuntu.uestc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://ubuntu.uestc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://ubuntu.uestc.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://ubuntu.uestc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://ubuntu.uestc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://ubuntu.uestc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://ubuntu.uestc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
- 如果无法解析uestc.edu.cn域名，请使用以下地址
deb http://ubuntu.dormforce.net/ubuntu/ natty main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ natty-backports main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ natty-proposed main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ natty-security main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ natty-updates main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ natty main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ natty-backports main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ natty-security main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ natty-updates main multiverse restricted universe
上海市上海交通大学更新服务器，包含其他开源镜像：
deb http://ftp.sjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
- IPv6地址
deb http://ftp6.sjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
中国科学技术大学更新服务器，由中科大 Linux 用户协会和中科大学网络信息中心维护，包含其他开源镜像：
deb http://debian.ustc.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
- IPv6地址
deb http://mirrors6.ustc.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
清华大学更新服务器，包含其他开源镜像：
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-security main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-updates main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-backports main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse
- IPv6地址
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn//ubuntu/ natty-security main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-updates main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-backports main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-proposed main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-security main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ natty-updates main multiverse restricted universe
中国地质大学（北京）更新服务器（已失效）
deb http://www.tofree.org/ubuntu/ natty main restricted universe multiverse deb http://www.tofree.org/ubuntu/ natty-security main restricted universe multiverse deb http://www.tofree.org/ubuntu/ natty-updates main restricted universe multiverse deb http://www.tofree.org/ubuntu/ natty-proposed main restricted universe multiverse deb http://www.tofree.org/ubuntu/ natty-backports main restricted universe multiverse deb-src http://www.tofree.org/ubuntu/ natty main restricted universe multiverse deb-src http://www.tofree.org/ubuntu/ natty-security main restricted universe multiverse deb-src http://www.tofree.org/ubuntu/ natty-updates main restricted universe multiverse deb-src http://www.tofree.org/ubuntu/ natty-proposed main restricted universe multiverse deb-src http://www.tofree.org/ubuntu/ natty-backports main restricted universe multiverse
以下为较快的境外服务器
台湾的官方源，也是国立台湾大学的源。速度有时甚至快于内地的，包含 Debian 等其他镜像：
deb http://tw.archive.ubuntu.com/ubuntu natty main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu natty-security main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu natty-updates main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu natty-backports main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu natty-proposed main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu natty main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu natty-security main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu natty-updates main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu natty-backports main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu natty-proposed main restricted universe multiverse
以下源支持IPV6,推荐可以使用IPV6的教育网用户使用，速度在200kb/s左右，如需源代码，将deb替换成deb-src即可
瑞士IPv6源，详情：
deb http://mirror.switch.ch/ftp/ubuntu/ natty main multiverse restricted universe deb http://mirror.switch.ch/ftp/ubuntu/ natty-backports main multiverse restricted universe deb http://mirror.switch.ch/ftp/ubuntu/ natty-proposed main multiverse restricted universe deb http://mirror.switch.ch/ftp/ubuntu/ natty-security main multiverse restricted universe deb http://mirror.switch.ch/ftp/ubuntu/ natty-updates main multiverse restricted universe
爱尔兰IPv6源，详情：
deb http://ftp.heanet.ie/mirrors/ubuntu/ natty main multiverse restricted universe deb http://ftp.heanet.ie/mirrors/ubuntu/ natty-backports main multiverse restricted universe deb http://ftp.heanet.ie/mirrors/ubuntu/ natty-proposed main multiverse restricted universe deb http://ftp.heanet.ie/mirrors/ubuntu/ natty-security main multiverse restricted universe deb http://ftp.heanet.ie/mirrors/ubuntu/ natty-updates main multiverse restricted universe
比利时IPv6源：
deb ftp://ftp.belnet.be/mirror/ubuntu.com/ubuntu/ natty main multiverse restricted universe deb ftp://ftp.belnet.be/mirror/ubuntu.com/ubuntu/ natty-backports main multiverse restricted universe deb ftp://ftp.belnet.be/mirror/ubuntu.com/ubuntu/ natty-proposed main multiverse restricted universe deb ftp://ftp.belnet.be/mirror/ubuntu.com/ubuntu/ natty-security main multiverse restricted universe deb ftp://ftp.belnet.be/mirror/ubuntu.com/ubuntu/ natty-updates main multiverse restricted universe
日本IPv6源，详情：
deb http://ftp.kddilabs.jp/020/Linux/packages/ubuntu/archive/ maverick main multiverse restricted universe deb http://ftp.kddilabs.jp/020/Linux/packages/ubuntu/archive/ maverick-backports main multiverse restricted universe deb http://ftp.kddilabs.jp/020/Linux/packages/ubuntu/archive/ maverick-proposed main multiverse restricted universe deb http://ftp.kddilabs.jp/020/Linux/packages/ubuntu/archive/ maverick-security main multiverse restricted universe deb http://ftp.kddilabs.jp/020/Linux/packages/ubuntu/archive/ maverick-updates main multiverse restricted universe
瑞典IPV6源，据说速度达到1M以上，详情:
deb http://se.archive.ubuntu.com/ubuntu/ natty main universe restricted multiverse deb-src http://se.archive.ubuntu.com/ubuntu/ natty main universe restricted multiverse deb http://se.archive.ubuntu.com/ubuntu/ natty-security main restricted multiverse universe deb-src http://se.archive.ubuntu.com/ubuntu/ natty-security main restricted multiverse universe deb http://se.archive.ubuntu.com/ubuntu/ natty-updates universe main multiverse restricted deb-src http://se.archive.ubuntu.com/ubuntu/ natty-updates universe main multiverse restricted deb http://se.archive.ubuntu.com/ubuntu/ natty-proposed universe main multiverse restricted deb-src http://se.archive.ubuntu.com/ubuntu/ natty-proposed universe main multiverse restricted
- 备注：
-
- 教育网内原有兰大开源社区维护的镜像，现已删去其中 Ubuntu 镜像，保留了其他发行版。
- 西南大学开源社区维护的西南大学镜像中 Ubuntu 现只保留最新发布版的ISO镜像。
- 各大镜像站点往往包括 Ubuntu 以外的大量其他自由软件资源，文中已注出。
- 其他软件源如 Medibuntu、Getdeb 和各种 PPA 可在 Ubuntu-Tweak 中打开。
