sdcs.edu.cn - robtex.com

sdcs.edu.cn

DNSSEC⚠️ Not signed
A42.247.21.188🇨🇳 ERX-CERNET-BKB42.247.0.0/19
NSdns1.sd.edu.cn ⭐
A2001:da8:7002:f801:202:197:97:150🇨🇳 ERX-CERNET-BKB2001:da8:7002::/48
A202.194.97.150🇨🇳 ERX-CERNET-BKB202.194.96.0/22
NSdns2.sd.edu.cn
A2001:da8:7002:f801:202:197:97:151🇨🇳 ERX-CERNET-BKB2001:da8:7002::/48
A202.194.97.151🇨🇳 ERX-CERNET-BKB202.194.96.0/22
SOAdns1.sd.edu.cnad@sdcs.edu.cn serial=1778555471

edu.cn

DNSSEC⚠️ Not signed
NSdns2.edu.cn ⭐
NSdns.edu.cn
NSdns3.edu.cn
NSns2.cernet.net ⚠️ Not in parent delegation
NSns4.cernet.net ⚠️ Not in parent delegation
NSns5.cernet.net ⚠️ Not in parent delegation
SOAdns.edu.cnhostmaster@net.edu.cn 2026-07-16 #79
WOT: SAFE (85/100)

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DNS History

3 records (3 active, 0 former)

NSdns1.sd.edu.cndns2.sd.edu.cnA42.247.21.188
●NSdns1.sd.edu.cn2026-05-16 → 2026-07-18 · 2 obs
● 2026-05-16 18:31:42
● 2026-07-18 20:54:22
●NSdns2.sd.edu.cn2026-05-16 → 2026-07-18 · 2 obs
● 2026-05-16 18:31:42
● 2026-07-18 20:54:22
●A42.247.21.1882026-05-16 → 2026-07-18 · 2 obs
● 2026-05-16 18:31:42
● 2026-07-18 20:54:22

🔍 DNS Trace

Analysis

IP Addresses

sdcs.edu.cn resolves to one IP address: 42.247.21.188.

sdcc.edu.cn is an example of another host name that shares IP numbers with sdcs.edu.cn.

Name Servers

sdcs.edu.cn has two authoritative name servers — dns1.sd.edu.cn and dns2.sd.edu.cn.

sdcs.edu.cn uses the same name servers as several other domains — among them sdpei.edu.cn, sdmcjn.edu.cn, sdcc.edu.cn and two more.

sdcs.edu.cn has at least partial name server overlap with other domains, such as rzpt.edu.cn, sdipct.edu.cn, ytvc.edu.cn and two others.

It is common to find these name servers paired with the name servers dns.sd.edu.cn.

Both dns1.sd.edu.cn and dns2.sd.edu.cn have two IP addresses each. dns1.sd.edu.cn resolves to 202.194.97.150 and 2001:da8:7002:f801:202:197:97:150; dns2.sd.edu.cn resolves to 202.194.97.151 and 2001:da8:7002:f801:202:197:97:151.