21sj.net - robtex.com
21sj.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 180.96.11.12🇨🇳 CHINATELECOM-JIANGSU-NANJING-IDC180.96.8.0/21 CTJS-NJIDC | ||||||
| NS | dns17.hichina.com ⭐ | ||||||
| A | 2408:4009:501::25🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.100🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.110🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | dns18.hichina.com | ||||||
| A | 2408:4009:501::26🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.98🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.108🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| MX | mail.21sj.net ⭐ | ||||||
| A | 218.30.103.83🇨🇳 CHINA-1218.30.96.0/19 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| MX | 21sj.net(10) | ||||||
| A | 180.96.11.12🇨🇳 CHINATELECOM-JIANGSU-NANJING-IDC180.96.8.0/21 CTJS-NJIDC | ||||||
| SOA | dns17.hichina.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1784692257 | ||||||
MX for
21sj.net |
Subdomains
mail.21sj.net |
Same first word
Similar names
21js.cn |
js12.cc |
12js.org |
21js.org |
sj12.net |
j12s.com |
2j1s.com |
12js.com |
js12.com |
12sj.cn |
sj12.info |
js21.nl |
21js.com |
sj12.com |
DNS History
5 records (5 active, 0 former)
●NSdns17.hichina.com2015-08-09 → 2026-07-22 · 2 obs
● 2026-07-22 04:13:04
●NSdns18.hichina.com2015-08-09 → 2026-07-22 · 2 obs
● 2026-07-22 04:13:04
●MX21sj.net2015-08-09 → 2026-07-22 · 2 obs
● 2026-07-22 04:13:04
●MXmail.21sj.net2015-08-09 → 2026-07-22 · 2 obs
● 2026-07-22 04:13:04
●A180.96.11.122015-08-09 → 2026-07-22 · 2 obs
● 2026-07-22 04:13:04
🔍 DNS Trace
Analysis
Hierarchy
21sj.net serves as the parent of mail.21sj.net.
Mail Server Role
21sj.net acts as its own mail server.
As mail servers, mail.21sj.net and 21sj.net are regularly found together.
IP Addresses
21sj.net points to a single IP number: 180.96.11.12.
Name Servers
21sj.net uses two name servers for its delegation: dns17.hichina.com and dns18.hichina.com.
21sj.net shares its name server setup with other domains, including yiyou666.com, guomaodian.com, rend.cn and two others.
The name servers for 21sj.net are at least partly shared with other domains such as shuangchen.com, homeandgo.com, dagefan.com and aibentu.com.
Host names with 9 IP numbers:
Hostname dns17.hichina.com directs to 39.96.153.40, 39.96.153.60 and 47.118.199.200 along with 6 other IP addresses.
Hostname dns18.hichina.com directs to 39.96.153.38, 39.96.153.61 and 47.118.199.198 along with 6 other IP addresses.
Mail Servers
The domain 21sj.net has two mail servers: 21sj.net and mail.21sj.net.
21sj.net directs to 180.96.11.12 and mail.21sj.net directs to 218.30.103.83; each host name points to exactly one IP number.