ysdu.cn - robtex.com
ysdu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.188.138.143🇺🇸 PEGTECHINC140.188.128.0/19 PEG TECH INC | ||||||
| NS | ns1.nowcndns.com ⭐ | ||||||
| A | 1.193.216.204🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network | ||||||
| A | 218.98.111.129🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED | ||||||
| A | 218.98.111.138🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED | ||||||
| NS | ns2.nowcndns.com | ||||||
| A | 61.158.128.11🇨🇳 CHINA169-Backbone61.158.128.0/17 CNC Group CHINA169 Henan Province Network | ||||||
| PTR | 11.128.158.61.ha.cnc | ||||||
| A | 183.253.57.202🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route) | ||||||
| A | 211.99.99.38🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object | ||||||
| SOA | ns1.nowcndns.comadmin@nowcndns.com serial=1773327789 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034587591 | ||||||
Same first word
Similar names
DNS History
8 records (3 active, 5 former)
●NSns1.nowcndns.com2026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 02:12:46
●NSns2.nowcndns.com2026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 02:12:46
●A140.188.138.1432026-03-26 → 2026-03-26 · 3 obs
● 2026-03-26 02:12:44
● 2026-03-26 02:12:46
○A38.63.129.712026-03-26 → 2026-03-26 · 2 obs
○ 2026-03-26 02:12:46
○A47.90.14.2322016-09-14 → 2016-09-14 · 4 obs
● 2016-09-14 09:30:34
○ 2017-05-27 08:28:24
○ 2026-03-26 02:12:46
○A47.90.20.172016-09-14 → 2016-09-14 · 4 obs
● 2016-09-14 09:30:34
○ 2017-05-27 08:28:24
○ 2026-03-26 02:12:46
○A64.62.224.2532015-12-04 → 2015-12-04 · 3 obs
○ 2016-09-14 09:30:34
○ 2026-03-26 02:12:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ysdu.cn | ns1.nowcndns.com, ns2.nowcndns.com | - |
✅ Authoritative Response
Server:211.99.99.38
NS records: ns1.nowcndns.com, ns2.nowcndns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ysdu.cn (unsigned zone)
⏱️ Timing
Total: 1216ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 140.188.138.143 |
| NS | 2 | ns1.nowcndns.com, ns2.nowcndns.com |
| SOA | 1 | ns1.nowcndns.com admin.nowcndns.com |
Analysis
IP Addresses
ysdu.cn points to a single IP number: 140.188.138.143.
Other host names, for instance www.yaxuancl.cn, xmfpsg.com, yaxuancl.cn, zghyddc.com and www.xmfpsg.com share IP numbers with ysdu.cn.
Name Servers
Delegation for ysdu.cn rests with two name servers, ns1.nowcndns.com and ns2.nowcndns.com.
ysdu.cn shares the same name server setup as other domains, including eakv.cn, canak.cn, iboxit.cn, taotaowu.cn and qianyoou.cn.
Host names with three IP numbers: The host name ns1.nowcndns.com points to 1.193.216.204, 218.98.111.129 and 218.98.111.138; The host name ns2.nowcndns.com points to 61.158.128.11, 183.253.57.202 and 211.99.99.38.