`sihc.com.cn`

DNSSEC	⚠️ Not signed
A	183.3.221.100^{🇨🇳 CHINANET-BACKBONE183.0.0.0/10 Mega-II IDC}
		PTR	`sihc.com.cn`
NS	`vip3.alidns.com` ⭐
		A	2408:4009:500::3^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.3^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.5^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.210^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.136^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.26^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.10^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip4.alidns.com`
		A	2408:4009:500::4^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.4^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.6^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.211^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.137^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.27^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.11^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
MX	`sztcg.sihc.com.cn` ⭐
		A	183.3.221.116^{🇨🇳 CHINANET-BACKBONE183.0.0.0/10 Mega-II IDC}
MX	`szwl.sihc.com.cn` ⭐
		A	183.3.221.116^{🇨🇳 CHINANET-BACKBONE183.0.0.0/10 Mega-II IDC}
MX	`mail.sihc.com.cn`⁽¹⁰⁾
		A	183.3.221.116^{🇨🇳 CHINANET-BACKBONE183.0.0.0/10 Mega-II IDC}
TXT	`MS=7614D3035072695745D3491B827F06F8E601AEBB`
TXT	`v=spf1 ip4:183.3.221.100 include:spf.richdt.cn -all`
SOA	`vip3.alidns.com`hostmaster@hichina.com 2025-12-10 #11

`com.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2030510160

WOT: NOT_SAFE (20/100)

Same first word

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DNS History

10 records (6 active, 4 former)

○NSns1.sinet.net.cn2015-08-01 → 2017-05-04 · 4 obs

● 2015-08-01 22:44:30
● 2017-05-04 23:27:36
○ 2026-04-07 06:55:18
○ 2026-04-12 03:53:38

○NSns2.sinet.net.cn2015-08-01 → 2017-05-04 · 4 obs

● 2015-08-01 22:44:30
● 2017-05-04 23:27:36
○ 2026-04-07 06:55:18
○ 2026-04-12 03:53:38

●NSvip3.alidns.com2026-04-07 → 2026-04-12 · 3 obs

○ 2017-05-04 23:27:36
● 2026-04-07 06:55:18
● 2026-04-12 03:53:38

●NSvip4.alidns.com2026-04-07 → 2026-04-12 · 3 obs

○ 2017-05-04 23:27:36
● 2026-04-07 06:55:18
● 2026-04-12 03:53:38

●MXmail.sihc.com.cn2015-08-01 → 2026-04-12 · 2 obs

● 2015-08-01 22:44:30
● 2026-04-12 03:53:38

●MXsztcg.sihc.com.cn2026-04-07 → 2026-04-12 · 3 obs

○ 2015-08-01 22:44:30
● 2026-04-07 06:55:18
● 2026-04-12 03:53:38

●MXszwl.sihc.com.cn2026-04-07 → 2026-04-12 · 3 obs

○ 2015-08-01 22:44:30
● 2026-04-07 06:55:18
● 2026-04-12 03:53:38

●A183.3.221.1002026-04-07 → 2026-04-12 · 3 obs

○ 2017-05-04 23:27:36
● 2026-04-07 06:55:18
● 2026-04-12 03:53:38

○A202.104.147.372015-08-01 → 2016-03-26 · 4 obs

● 2015-08-01 22:44:30
● 2016-03-26 22:19:44
○ 2017-05-04 23:27:36
○ 2026-04-12 03:53:38

○A202.104.147.402017-05-04 → 2017-05-04 · 4 obs

○ 2016-03-26 22:19:44
● 2017-05-04 23:27:36
○ 2026-04-07 06:55:18
○ 2026-04-12 03:53:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	c.dns.cn, e.dns.cn, b.dns.cn, a.dns.cn...	-
sihc.com.cn	vip3.alidns.com, vip4.alidns.com	-

✅ Authoritative Response

Server:170.33.80.10

NS records: vip3.alidns.com, vip4.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sihc.com.cn (unsigned zone)

⏱️ Timing

Total: 860ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.3.221.100`
NS	2	`vip3.alidns.com, vip4.alidns.com`
MX	3	`sztcg.sihc.com.cn (pri: 1), mail.sihc.com.cn (pri: 10)...`
TXT	2	`MS=7614D3035072695745D3491B827F06F8E601A, v=spf1 ip4:183.3.221.100 include:spf.ric`
SOA	1	`vip3.alidns.com hostmaster.hichina.com`

Analysis

IP Addresses

sihc.com.cn points to IP number 183.3.221.100.

Name Servers

sihc.com.cn is delegated to two name servers: vip3.alidns.com and vip4.alidns.com.

sihc.com.cn uses the same name server setup as other domains such as duochang.cc, r93535.com, knetreg.cn, lifemg.cn and etczj.com.

sihc.com.cn shares some name servers with other domains, for example tsingoal.com, lookchem.com, 10ss.net and qian.fm.

These name servers are commonly used with the name servers vip1.alidns.com and vip2.alidns.com.

Hostnames with seven IPs:

vip3.alidns.com points to: 2408:4009:500::3, 8.212.93.3, 140.205.1.5, 170.33.32.210, 170.33.40.136, 170.33.73.26 and 170.33.80.10.

vip4.alidns.com points to: 2408:4009:500::4, 8.212.93.4, 140.205.1.6, 170.33.32.211, 170.33.40.137, 170.33.73.27 and 170.33.80.11.

Mail Servers

sihc.com.cn is served by three mail servers: mail.sihc.com.cn, sztcg.sihc.com.cn and szwl.sihc.com.cn.

Host names with one IP number:

mail.sihc.com.cn points to: 183.3.221.116

sztcg.sihc.com.cn points to: 183.3.221.116

szwl.sihc.com.cn points to: 183.3.221.116

Host names that point to 183.3.221.116: mail.sihc.com.cn, sztcg.sihc.com.cn and szwl.sihc.com.cn

sihc.com.cn - robtex.com

sihc.com.cn

com.cn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`sihc.com.cn`

`com.cn`