210.31.0.0 - 210.31.15.255 (CUN-CN) ~{VPQkCqWe4sQ'~}; Centre University For Nationalities; Beijing 100081, China; CN
210.31.16.0 - 210.31.31.255 (HDTV-CN) ~{11>)JP:#5mGx9c2%>VMxBgVPPD~}; Network Center Of Haidian District Broadcast Bureau; Beijing 100001, China; CN
210.31.32.0 - 210.31.47.255 (BIPT-CN) ~{11>)J/SM;/9$Q'T:~}; Beijing Institute Of Petro-chemical Technology; Beijing 102600, China; CN
210.31.48.0 - 210.31.63.255 (CPSU-CN) ~{VP9zHKCq9+024sQ'~}; The Chinese People's Public Security University; Beijing 100038, China; CN
210.31.64.0 - 210.31.79.255 (BNUB-CN) ~{11>)J&764sQ'~}; Beijing Normal University; Beijing 100875, China; CN
210.31.80.0 - 210.31.95.255 (BJUUB-CN) ~{11>)A*:O4sQ'~}; Beijing Union University; Beijing 100101, China; CN
210.31.96.0 - 210.31.99.255 (JDNTC-CN) ~{=z6+DOJ&76W(?FQ'P#~}; The Jindongnan Teachers' College; No.12, Chengbei Street, Changzhi, Shanxi 046011, China; CN
210.31.100.0 - 210.31.103.255 (CANCIT-CN) ~{;*119$Q'T:7VT:~}; The College Attached To North China Institute Of Technology; No.38, Yingxin Street, Caoping District, Taiyuan, Shanxi 030008,; CN
210.31.104.0 - 210.31.111.255 (TYHMI-CN) ~{L+T-VXPM;zP5Q'T:~}; Taiyuan Heavy Machinery Institute; Taiyuan, Shanxi 030024, China; CN
210.31.112.0 - 210.31.127.255 (SXUFE-CN) ~{I=Nw2F>-4sQ'~}; Shanxi University Of Finance & Economics; Taiyuan, Shanxi 030006, China; CN
210.31.128.0 - 210.31.143.255 (TJLIU-CN) ~{Ll=rGa9$R5Q'T:~}; Tianjin University Of Light Industry; Tianjin 300222, China; CN
210.31.144.0 - 210.31.151.255 (TJEC-CN) ~{Ll=r=LN/~}; Tianjin Education Committee; Munan Road 28, Heping District, Tianjin, 300050, China; CN
210.31.152.0 - 210.31.159.255 (TJBMIC-CN) ~{Ll=r=(V~2DAO9$R5Q'P#~}; Tianjin Building Materials Industrial College; Tianjin, 300381, China; CN
210.31.160.0 - 210.31.175.255 (CYC-CN) ~{VP9zG`DjU~VNQ'T:~}; China Youth College For Political Science; Beijing 100089, China; CN
210.31.176.0 - 210.31.191.255 (IMNU-CN) ~{DZCI9EJ&764sQ'~}; Inner Mongolia Normal University; Huhhot, Inner Mongolia 010022, China; CN
210.31.192.0 - 210.31.199.255 (HEBIT-CN) ~{:S11@m9$Q'T:~}; Hebei Institute Of Technology; Tangshan,Hebei 063000,China; CN
210.31.200.0 - 210.31.207.255 (HVTTC-CN) ~{:S11V0R5<<JuJ&76Q'T:~}; Hebei Vacational Technical Teacher's Colloge; Changli, Qinhuangdao, Hebei 066600, China; CN
210.31.208.0 - 210.31.215.255 (CDPC-CN) ~{3P5BJ/SM8_5HW(?FQ'P#~}; Chengde Petroleum College; Chengde, Hebei 067000, China; CN
210.31.216.0 - 210.31.223.255 (HSNC-CN) ~{:S11J!:bK.J&76W(?FQ'P#~}; Hebei Hengshui Normal College; Hengshui, Hebei 053000, China; CN
210.31.224.0 - 210.31.239.255 (NCIAE-CN) ~{;*11:=Ll9$R5Q'T:~}; North China Institute Of Astronautic Engineering; Langfang, Hebei 065000, China; CN
210.31.240.0 - 210.31.247.255 (QHDRTVU-CN) ~{GX;J5:9c2%5gJS4sQ'~}; Qinhuangdao, Radio and Television; Qinhuangdao, Hebei 066001, China; CN
210.31.248.0 - 210.31.255.255 (SJZTC-CN) ~{J/<RW/J&76W(?FQ'P#~}; Shijiazhuang Teachers College; Shijiazhuang, Hebei 050801, China; CN