`sys-optics.com`

DNSSEC	⚠️ Not signed
A	182.92.155.158^{🇨🇳 Alibaba-Cloud182.92.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`sys-optics.com` ⭐
		A	182.92.155.158^{🇨🇳 Alibaba-Cloud182.92.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`ns1.ndns.cn`
		A	111.229.112.182^{🇨🇳 TENCENT-NET-AP111.229.64.0/18}
NS	`ns2.ndns.cn`
		A	123.58.218.151^{🇭🇰 UCLOUD-1123.58.218.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL,}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
SOA	`sys-optics.com`root@sys-optics.com 2017-11-13 #0

`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=1786276289

NS for

sys-optics.com

Same first word

sys-optics.com

DNS History

8 records (6 active, 2 former)

●NSns1.ndns.cn2017-11-18 → 2026-08-09 · 2 obs

● 2017-11-18 02:36:14
● 2026-08-09 11:53:10

●NSns2.ndns.cn2026-05-25 → 2026-08-09 · 3 obs

○ 2017-11-18 02:36:14
● 2026-05-25 11:27:10
● 2026-08-09 11:53:10

○NSns206.nicecdn.com2017-11-18 → 2017-11-18 · 3 obs

● 2017-11-18 02:36:14
○ 2026-05-25 11:27:10
○ 2026-08-09 11:53:10

●NSsys-optics.com2026-05-25 → 2026-08-09 · 6 obs

○ 2017-11-18 02:36:14
● 2026-05-25 11:27:10
● 2026-06-15 12:27:20
○ 2026-08-04 11:21:36
● 2026-08-04 22:22:12
● 2026-08-09 11:53:10

●MXmxbiz1.qq.com2017-11-18 → 2026-08-09 · 5 obs

● 2017-11-18 02:36:14
● 2026-06-15 12:27:20
○ 2026-08-04 11:21:36
● 2026-08-04 22:22:12
● 2026-08-09 11:53:10

●MXmxbiz2.qq.com2017-11-18 → 2026-08-09 · 5 obs

● 2017-11-18 02:36:14
● 2026-06-15 12:27:20
○ 2026-08-04 11:21:36
● 2026-08-04 22:22:12
● 2026-08-09 11:53:10

○A122.114.18.1662017-11-18 → 2017-11-18 · 3 obs

● 2017-11-18 02:36:14
○ 2026-05-25 11:27:10
○ 2026-08-09 11:53:10

●A182.92.155.1582026-05-25 → 2026-08-09 · 6 obs

○ 2017-11-18 02:36:14
● 2026-05-25 11:27:10
● 2026-06-15 12:27:20
○ 2026-08-04 11:21:36
● 2026-08-04 22:22:12
● 2026-08-09 11:53:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net...	-
sys-optics.com	ns1.ndns.cn, ns2.ndns.cn	-

✅ Authoritative Response

Server:123.58.218.151

NS records: ns1.ndns.cn, ns2.ndns.cn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sys-optics.com (unsigned zone)

⏱️ Timing

Total: 1531ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`182.92.155.158`
NS	2	`ns1.ndns.cn, ns2.ndns.cn`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
SOA	1	`sys-optics.com root.sys-optics.com`

Analysis

Name Server Role

The NS records for sys-optics.com point back to sys-optics.com itself.

It is common to find ns1.ndns.cn and ns2.ndns.cn serving as name servers together with sys-optics.com.

IP Addresses

sys-optics.com resolves to just one IP address, 182.92.155.158.

Other hosts including vucome.com, hh1x.com and dachunet.com share IP addresses with sys-optics.com.

Name Servers

The DNS delegation for sys-optics.com uses three name servers — sys-optics.com, ns1.ndns.cn and ns2.ndns.cn.

There is at least partial name server overlap between sys-optics.com and other domains — k84.cn, icaets.org, citibankverify.live and two more among them.

Each of the three hostnames points to exactly one IP address: sys-optics.com points to 182.92.155.158, ns1.ndns.cn points to 111.229.112.182 and ns2.ndns.cn points to 123.58.218.151.

Mail Servers

sys-optics.com is served by two mail servers, mxbiz1.qq.com and mxbiz2.qq.com.

Among the domains sharing a mail server setup with sys-optics.com are ledtoplite.com, cimai.com.cn, ronghuayxf.com and two others.

There is at least a partial MX overlap between sys-optics.com and other domains, including fsjxzf.com, dtsense.com, logthing.com and two others.

sys-optics.com - robtex.com

sys-optics.com

com