sysmath.com - dns.ninja
sysmath.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 123.57.41.99🇨🇳 Alibaba-Cloud123.57.0.0/16 Alibaba (US) Technology Co., Ltd. | ||||||
| NS | ns1.sfn.cn ⭐ | ||||||
| A | 111.63.77.29🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
| NS | ns2.sfn.cn | ||||||
| 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) | ||||||
| TXT | a78b89401e24d1e9820748b6bbaaf2a5d3861833a671ef159a5f9dd22ba785f3 | ||||||
| SOA | ns1.sfn.cnroot@ns1.sfn.cn 2026-08-07 #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.netnstld@verisign-grs.com serial=1786039814 | ||||||
Same first word
sysmath.com |
Similar names
DNS History
6 records (3 active, 3 former)
●NSns1.sfn.cn2015-11-03 → 2026-08-06 · 3 obs
● 2015-11-03 08:09:58
● 2026-08-06 18:14:50
●NSns2.sfn.cn2015-11-03 → 2026-08-06 · 3 obs
● 2015-11-03 08:09:58
● 2026-08-06 18:14:50
○NSns3.sanfront.com.cn2015-08-14 → 2015-10-12 · 4 obs
● 2015-10-12 16:11:16
○ 2015-11-03 08:09:58
○ 2026-08-06 18:14:50
○NSns5.sanfront.com.cn2015-08-14 → 2015-10-12 · 4 obs
● 2015-10-12 16:11:16
○ 2015-11-03 08:09:58
○ 2026-08-06 18:14:50
●A123.57.41.992017-09-08 → 2026-08-06 · 4 obs
● 2017-09-08 05:37:04
○ 2026-07-13 05:20:38
● 2026-08-06 18:14:50
○A159.226.47.2022015-08-14 → 2016-12-02 · 4 obs
● 2016-12-02 18:20:44
○ 2017-09-08 05:37:04
○ 2026-08-06 18:14:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
| sysmath.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 sysmath.com (unsigned zone)
⏱️ Timing
Total: 1822ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 123.57.41.99 |
| NS | 2 | ns1.sfn.cn, ns2.sfn.cn |
| TXT | 1 | a78b89401e24d1e9820748b6bbaaf2a5d3861833 |
| SOA | 1 | ns1.sfn.cn root.ns1.sfn.cn |
Analysis
IP Addresses
sysmath.com resolves to just one IP address, 123.57.41.99.
Two other host names, along with www.actamath.com, applmath.cjoe.ac.cn and computmath.cjoe.ac.cn, also share IP numbers with sysmath.com.
Name Servers
sysmath.com uses two name servers for its delegation: ns1.sfn.cn and ns2.sfn.cn.
sysmath.com shares its NS records with other domains, for example hubdzj.gov.cn, saas.sh.cn, fseng.com.cn and two others.
sysmath.com and other domains like dlhs24.com.cn, cta.net.cn and bjlot.com.cn share some name servers
Host names that have two IP addresses:
ns2.sfn.cn directs traffic to 101.37.119.99 and 111.63.77.30.
Host names that point to one IP address:
ns1.sfn.cn has the IP address 111.63.77.29.