`crystal-optech.com`

DNSSEC	⚠️ Not signed
A	120.26.144.170^{🇨🇳 Alibaba-Cloud120.26.0.0/16}
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}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		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,}
		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,}
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}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		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,}
		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,}
MX	`mx1.qiye.aliyun.com` ⭐
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mx2.qiye.aliyun.com`⁽⁵⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
MX	`mx3.qiye.aliyun.com`⁽¹⁰⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
TXT	`MS=ms95416268`
TXT	`v=spf1 include:spf.qiye.aliyun.com -all`
TXT	`MS=ms33556532`
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=1776132117

Subdomains

mail.crystal-optech.com

Same first word

crystal-optech.com

DNS History

14 records (6 active, 8 former)

●NSdns10.hichina.com2017-02-07 → 2026-04-14 · 3 obs

○ 2016-04-30 13:59:06
● 2017-02-07 12:10:14
● 2026-04-14 02:11:38

●NSdns9.hichina.com2017-02-07 → 2026-04-14 · 3 obs

○ 2016-04-30 13:59:06
● 2017-02-07 12:10:14
● 2026-04-14 02:11:38

○NSns11.xincache.com2015-11-18 → 2016-04-30 · 5 obs

○ 2015-07-07 08:21:54
● 2015-11-18 14:59:24
● 2016-04-30 13:59:06
○ 2017-02-07 12:10:14
○ 2026-04-14 02:11:38

○NSns12.xincache.com2015-11-18 → 2016-04-30 · 5 obs

○ 2015-07-07 08:21:54
● 2015-11-18 14:59:24
● 2016-04-30 13:59:06
○ 2017-02-07 12:10:14
○ 2026-04-14 02:11:38

○NSns15.xincache.com2015-07-07 → 2016-04-30 · 4 obs

● 2015-07-07 08:21:54
● 2016-04-30 13:59:06
○ 2017-02-07 12:10:14
○ 2026-04-14 02:11:38

○NSns16.xincache.com2015-07-07 → 2016-04-30 · 4 obs

● 2015-07-07 08:21:54
● 2016-04-30 13:59:06
○ 2017-02-07 12:10:14
○ 2026-04-14 02:11:38

○MXmail.crystal-optech.com2015-07-07 → 2017-02-07 · 4 obs

● 2015-07-07 08:21:54
● 2017-02-07 12:10:14
○ 2026-03-03 03:14:40
○ 2026-04-14 02:11:38

●MXmx1.qiye.aliyun.com2026-03-03 → 2026-04-14 · 3 obs

○ 2017-02-07 12:10:14
● 2026-03-03 03:14:40
● 2026-04-14 02:11:38

●MXmx2.qiye.aliyun.com2026-03-03 → 2026-04-14 · 3 obs

○ 2017-02-07 12:10:14
● 2026-03-03 03:14:40
● 2026-04-14 02:11:38

●MXmx3.qiye.aliyun.com2026-03-03 → 2026-04-14 · 3 obs

○ 2017-02-07 12:10:14
● 2026-03-03 03:14:40
● 2026-04-14 02:11:38

○A112.126.208.1082015-07-07 → 2015-07-07 · 3 obs

● 2015-07-07 08:21:54
○ 2015-11-18 14:59:24
○ 2026-04-14 02:11:38

●A120.26.144.1702026-03-03 → 2026-04-14 · 3 obs

○ 2017-02-07 12:10:14
● 2026-03-03 03:14:40
● 2026-04-14 02:11:38

○A121.42.111.42017-02-07 → 2017-02-07 · 4 obs

○ 2016-04-30 13:59:06
● 2017-02-07 12:10:14
○ 2026-03-03 03:14:40
○ 2026-04-14 02:11:38

○A121.42.127.192015-11-18 → 2016-04-30 · 5 obs

○ 2015-07-07 08:21:54
● 2015-11-18 14:59:24
● 2016-04-30 13:59:06
○ 2017-02-07 12:10:14
○ 2026-04-14 02:11:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net...	-
crystal-optech.com	dns9.hichina.com, dns10.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crystal-optech.com (unsigned zone)

⏱️ Timing

Total: 3563ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`120.26.144.170`
NS	2	`dns10.hichina.com, dns9.hichina.com`
MX	3	`mx1.qiye.aliyun.com (pri: 1), mx3.qiye.aliyun.com (pri: 10)...`
TXT	3	`MS=ms95416268, v=spf1 include:spf.qiye.aliyun.com -all...`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

Hierarchy

The parent of mail.crystal-optech.com is crystal-optech.com.

IP Addresses

crystal-optech.com points to an IP address: 120.26.144.170.

Name Servers

Two name servers dns10.hichina.com and dns9.hichina.com handle the delegation for crystal-optech.com.

crystal-optech.com shares the same name server setup as other domains, for instance loveteria.com, allrightracking.com, bigmaya.com, mwxkj.com and 59star.cn.

crystal-optech.com at least partially shares name servers with other domains, for instance duchamp.cn, lcuz.cn, hnjiuxing.com, hwhao.com and shbangdie.com.

These name servers are commonly used with the following: expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers:

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

Three mail servers handle crystal-optech.com: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

crystal-optech.com shares at least partially some mail servers with other domains, for instance bnlflor.com, guangdongdafu.com, yoni-tech.com, wordstalk.net and shcs.com.cn.