letsopen.com - dns.ninja

`letsopen.com`

DNSSEC	⚠️ Not signed
A	138.91.235.8^{🇺🇸 Microsoft138.91.0.0/16 MICROSOFT}
NS	`dns23.hichina.com` ⭐
		A	2408:4009:501::31^{🇨🇳 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	`dns24.hichina.com`
		A	2408:4009:501::32^{🇨🇳 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	`hzmx01.mxmail.netease.com` ⭐
MX	`hzmx02.mxmail.netease.com`⁽¹⁰⁾
		A	47.251.71.119^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
		A	47.251.84.126^{🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object}
TXT	`v=spf1 include:spf.163.com ~all`
TXT	`google-site-verification=dHQYXCDScdAmWm0sWWENVheJlg10o-3Ud7AiR-QVN74`
TXT	`google-site-verification=GR5YYEy2y4uAo2VNhI9daDr5A1ZoT0nkUOTzB-1_W2s`
SOA	`dns23.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=1782914246

Subdomains

mail.letsopen.com

Same first word

letsopen.com

Similar names

DNS History

17 records (5 active, 12 former)

○NSbuy.internettraffic.com2015-11-24 → 2016-05-30 · 5 obs

○ 2015-07-25 21:35:42
● 2015-11-24 15:52:26
● 2016-05-30 00:27:16
○ 2017-02-05 21:49:10
○ 2026-07-01 13:58:26

●NSdns23.hichina.com2026-03-12 → 2026-07-01 · 3 obs

○ 2017-02-05 21:49:10
● 2026-03-12 20:05:50
● 2026-07-01 13:58:26

●NSdns24.hichina.com2026-03-12 → 2026-07-01 · 3 obs

○ 2017-02-05 21:49:10
● 2026-03-12 20:05:50
● 2026-07-01 13:58:26

○NSns1.uniregistrymarket.link2017-02-05 → 2017-02-05 · 4 obs

○ 2016-05-30 00:27:16
● 2017-02-05 21:49:10
○ 2026-03-12 20:05:50
○ 2026-07-01 13:58:26

○NSns1hwy.name.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

○NSns2.uniregistrymarket.link2017-02-05 → 2017-02-05 · 4 obs

○ 2016-05-30 00:27:16
● 2017-02-05 21:49:10
○ 2026-03-12 20:05:50
○ 2026-07-01 13:58:26

○NSns2fjz.name.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

○NSns3fgh.name.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

○NSns4ksy.name.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

○NSsell.internettraffic.com2015-11-24 → 2016-05-30 · 5 obs

○ 2015-07-25 21:35:42
● 2015-11-24 15:52:26
● 2016-05-30 00:27:16
○ 2017-02-05 21:49:10
○ 2026-07-01 13:58:26

●MXhzmx01.mxmail.netease.com2026-03-12 → 2026-07-01 · 3 obs

○ 2015-11-24 15:52:26
● 2026-03-12 20:05:50
● 2026-07-01 13:58:26

●MXhzmx02.mxmail.netease.com2026-03-12 → 2026-07-01 · 3 obs

○ 2015-11-24 15:52:26
● 2026-03-12 20:05:50
● 2026-07-01 13:58:26

○MXmail.letsopen.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

●A138.91.235.82026-03-12 → 2026-07-01 · 3 obs

○ 2017-02-05 21:49:10
● 2026-03-12 20:05:50
● 2026-07-01 13:58:26

○A65.98.2.1252015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 21:35:42
○ 2015-11-24 15:52:26
○ 2026-07-01 13:58:26

○A69.172.201.1532016-05-30 → 2017-02-05 · 5 obs

○ 2016-02-23 08:50:40
● 2016-05-30 00:27:16
● 2017-02-05 21:49:10
○ 2026-03-12 20:05:50
○ 2026-07-01 13:58:26

○A69.172.201.2082015-11-24 → 2016-02-23 · 5 obs

○ 2015-07-25 21:35:42
● 2015-11-24 15:52:26
● 2016-02-23 08:50:40
○ 2016-05-30 00:27:16
○ 2026-07-01 13:58:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
letsopen.com	dns23.hichina.com, dns24.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.40

NS records: dns23.hichina.com, dns24.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for letsopen.com (unsigned zone)

⏱️ Timing

Total: 4109ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`138.91.235.8`
NS	2	`dns23.hichina.com, dns24.hichina.com`
MX	2	`hzmx02.mxmail.netease.com (pri: 10), hzmx01.mxmail.netease.com (pri: 5)`
TXT	3	`google-site-verification=GR5YYEy2y4uAo2V, google-site-verification=dHQYXCDScdAmWm0...`
SOA	1	`dns23.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns23.hichina.com, dns23.hichina.com, dns23.hichina.com...)

Analysis

Hierarchy

letsopen.com serves as the parent of mail.letsopen.com.

IP Addresses

letsopen.com resolves to one IP address: 138.91.235.8.

yomesorb.com, ciybio.com, bioetp.net and two other host names share IP numbers with letsopen.com.

Name Servers

letsopen.com is delegated to two name servers: dns23.hichina.com and dns24.hichina.com.

letsopen.com uses the same name servers as several other domains — among them zhuanfan.com, rdlsmile.com, nwvdi.com and two more.

letsopen.com has at least partial name server overlap with other domains, such as rbsic-sisic.com, hotchip.cn, tykjtzlsx.com and two others.

expirens3.hichina.com, expirens4.hichina.com and ns1.alidns.com — plus 3 other name servers — are commonly paired with these name servers.

Hostnames that resolve to 9 IP addresses:

dns23.hichina.com resolves to 39.96.153.40, 39.96.153.60, 47.118.199.200 and 6 other IP addresses.

dns24.hichina.com resolves to 39.96.153.38, 39.96.153.61, 47.118.199.198 and 6 other IP addresses.

Mail Servers

Mail for letsopen.com is handled by two mail servers — hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.

letsopen.com uses an identical mail server configuration to several other domains — among them xzw.com, fireson-tech.com, sayok.cc and two more.

The mail servers of letsopen.com are at least partially shared with other domains, including peopledaily.com.cn.cdn.cloudflare.net.

Hostnames that resolve to two IP addresses:

hzmx02.mxmail.netease.com points to 47.251.71.119 and 47.251.84.126.