system-instruments.com - dns.ninja
system-instruments.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.sfn.cn ⚠️ Not in zone NS records | ||||||
| A | 111.63.77.29🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
| NS | ns2.sfn.cn ⚠️ Not in zone NS records | ||||||
| A | 101.37.119.99🇨🇳 Alibaba-Cloud101.37.0.0/17 | ||||||
| A | 111.63.77.30🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
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.netnstld@verisign-grs.com serial=1786900344 | ||||||
Same first word
system-instruments.com |
DNS History
9 records (2 active, 7 former)
●NSns1.sfn.cn2016-11-23 → 2026-08-16 · 3 obs
● 2016-11-23 17:58:38
● 2026-08-16 17:19:54
●NSns2.sfn.cn2016-11-23 → 2026-08-16 · 3 obs
● 2016-11-23 17:58:38
● 2026-08-16 17:19:54
○NSns57.worldnic.com2015-06-29 → 2016-04-28 · 4 obs
● 2016-04-28 03:14:24
○ 2016-11-23 17:58:38
○ 2026-08-16 17:19:54
○NSns58.worldnic.com2015-06-29 → 2016-04-28 · 4 obs
● 2016-04-28 03:14:24
○ 2016-11-23 17:58:38
○ 2026-08-16 17:19:54
○MXmx605.now.net.cn2017-07-01 → 2017-07-01 · 4 obs
● 2017-07-01 19:58:48
○ 2026-02-18 18:35:44
○ 2026-08-16 17:19:54
○MXmx620.now.net.cn2015-06-29 → 2016-11-23 · 4 obs
● 2016-11-23 17:58:38
○ 2017-07-01 19:58:48
○ 2026-08-16 17:19:54
○MXmx650.now.net.cn2026-02-18 → 2026-02-18 · 3 obs
● 2026-02-18 18:35:44
○ 2026-08-16 17:19:54
○A116.255.246.1242026-02-18 → 2026-02-18 · 3 obs
● 2026-02-18 18:35:44
○ 2026-08-16 17:19:54
○A119.146.223.1442015-06-29 → 2017-07-01 · 4 obs
● 2017-07-01 19:58:48
○ 2026-02-18 18:35:44
○ 2026-08-16 17:19:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| system-instruments.com | ns1.sfn.cn, ns2.sfn.cn | - |
✅ Authoritative Response
Server:101.37.119.99
NS records: ns1.sfn.cn, ns2.sfn.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for system-instruments.com (unsigned zone)
⏱️ Timing
Total: 1237ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 116.255.246.124 |
| NS | 2 | ns1.sfn.cn, ns2.sfn.cn |
| MX | 1 | mx650.now.net.cn (pri: 5) |
| TXT | 1 | v=spf1include:speedmail.cn -all |
| SOA | 1 | ns1.sfn.cn root.ns1.sfn.cn |
Analysis
Name Servers
DNS delegation for system-instruments.com points to two name servers: ns1.sfn.cn and ns2.sfn.cn.
The name server configuration of system-instruments.com is shared with other domains, for instance 84.com.cn, mj.org.cn, nwse.com.cn and two others.
system-instruments.com shares at least some of its name servers with domains including bozhou.cn, tobaccoinfo.com.cn and portsoft.cn
It is common to find these name servers paired with the name servers dns1.tobaccoinfo.com.cn.
Host names pointing to two IP addresses:
ns2.sfn.cn has two IP addresses: 101.37.119.99 and 111.63.77.30.
Host names resolving to a single IP address:
ns1.sfn.cn directs to 111.63.77.29.