`21datasheet.com`

DNSSEC	⚠️ Not signed
A	121.196.192.171^{🇨🇳 Alibaba-Cloud121.196.0.0/16}
NS	`dns9.hichina.com` ⭐
		A	2408:4009:501::17^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-42.defastlink.net`
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-52.defastlink.net`
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-202.defastlink.net`
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-212.defastlink.net`
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-42.defastlink.net`
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-52.defastlink.net`
		A	139.224.142.112^{🇨🇳 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,}
			PTR	`ip-139-224-142-112.defastlink.net`
		A	139.224.142.122^{🇨🇳 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,}
			PTR	`ip-139-224-142-122.defastlink.net`
NS	`dns10.hichina.com`
		A	2408:4009:501::18^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-41.defastlink.net`
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-51.defastlink.net`
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-201.defastlink.net`
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-211.defastlink.net`
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-41.defastlink.net`
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-51.defastlink.net`
		A	139.224.142.111^{🇨🇳 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,}
			PTR	`ip-139-224-142-111.defastlink.net`
		A	139.224.142.121^{🇨🇳 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,}
			PTR	`ip-139-224-142-121.defastlink.net`
MX	`mx.ym.163.com` ⭐
		A	111.124.200.35^{🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19}
SOA	`dns9.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`com`

	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.net`nstld@verisign-grs.com serial=1771291435

Subdomains

www.21datasheet.com

Same first word

21datasheet.com

DNS History

5 records (4 active, 1 former)

●NSdns10.hichina.com2015-12-18 → 2026-03-22 · 2 obs

● 2015-12-18 14:11:36
● 2026-03-22 14:07:02

●NSdns9.hichina.com2015-12-18 → 2026-03-22 · 2 obs

● 2015-12-18 14:11:36
● 2026-03-22 14:07:02

●MXmx.ym.163.com2026-02-17 → 2026-03-22 · 2 obs

● 2026-02-17 09:57:58
● 2026-03-22 14:07:02

●A121.196.192.1712026-02-17 → 2026-03-22 · 3 obs

○ 2017-04-21 03:25:22
● 2026-02-17 09:57:58
● 2026-03-22 14:07:02

○A42.81.86.822016-04-02 → 2017-04-21 · 4 obs

● 2016-04-02 20:39:52
● 2017-04-21 03:25:22
○ 2026-02-17 09:57:58
○ 2026-03-22 14:07:02

🔍 DNS Trace

Analysis

Hierarchy

The parent of www.21datasheet.com is 21datasheet.com.

IP Addresses

21datasheet.com points to IP number: 121.196.192.171.

Other host names such as 21dianyuan.com, www.21datasheet.com, bbs.21dianyuan.com, meeting.21dianyuan.com and news.21dianyuan.com share IPs with 21datasheet.com.

Name Servers

21datasheet.com is delegated to two name servers: dns10.hichina.com and dns9.hichina.com.

21datasheet.com shares the same name server setup as phstudy.com, bcloudauto.com, yxzxyy.com, d-bigdata.com and shibeiyun.com.

21datasheet.com partially shares its name servers with other domains, for example lkqg.cn, ultradns.xyz and chuanghuidianqi.com.

These name servers are commonly used with expirens3.hichina.com and expirens4.hichina.com.

Nine IP numbers per host:

dns10.hichina.com points to: 2408:4009:501::18, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

dns9.hichina.com points to: 2408:4009:501::17, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

Mail Servers

21datasheet.com is handled by a single mail server, mx.ym.163.com.

The mail server setup for 21datasheet.com matches that of other domains, for instance sdtwoo.com, xindacore.com, suisms.com, qslighting.com and biaodashi.com.

21datasheet.com shares at least partially some mail servers with other domains, including whga.cn, wellnessbracelet.com, viivin.cn, 52xgzy.com and flyiu.com.

these mail servers are commonly used with mxn.mxhichina.com and mxbiz1.qq.com.

mx.ym.163.com points to a single IP: 111.124.200.35.

21datasheet.com - robtex.com

21datasheet.com

com