stdoctors.cn - robtex.com
stdoctors.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.240.24.136🇭🇰 USZNI-AS-AP156.240.16.0/20 Megalayer | ||||||
| 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 | ||||||
| PTR | ip-218-98-111-138.defastlink.net | ||||||
| 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=1760612497 | ||||||
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=2034598192 | ||||||
Subdomains
www.stdoctors.cn |
Same first word
stdoctors.cn |
DNS History
10 records (3 active, 7 former)
○NSf1g1ns1.dnspod.net2015-07-11 → 2017-06-18 · 4 obs
● 2017-06-18 03:41:54
○ 2026-03-23 14:17:38
○ 2026-03-28 09:37:44
○NSf1g1ns2.dnspod.net2015-07-11 → 2017-06-18 · 4 obs
● 2017-06-18 03:41:54
○ 2026-03-23 14:17:38
○ 2026-03-28 09:37:44
●NSns1.nowcndns.com2026-03-23 → 2026-03-28 · 3 obs
● 2026-03-23 14:17:38
● 2026-03-28 09:37:44
●NSns2.nowcndns.com2026-03-23 → 2026-03-28 · 3 obs
● 2026-03-23 14:17:38
● 2026-03-28 09:37:44
●A156.240.24.1362026-03-23 → 2026-03-28 · 3 obs
● 2026-03-23 14:17:38
● 2026-03-28 09:37:44
○A206.225.84.1612015-11-25 → 2015-11-25 · 4 obs
● 2015-11-25 00:31:06
○ 2016-03-03 02:20:26
○ 2026-03-28 09:37:44
○A66.226.72.2002015-07-11 → 2015-07-11 · 3 obs
○ 2017-06-18 03:41:54
○ 2026-03-28 09:37:44
○A66.226.75.1362016-03-03 → 2016-09-14 · 5 obs
● 2016-03-03 02:20:26
● 2016-09-14 00:07:02
○ 2026-03-23 14:17:38
○ 2026-03-28 09:37:44
○CNAMEdns54.xiaoyida.com2015-07-11 → 2015-07-11 · 3 obs
○ 2015-11-25 00:31:06
○ 2026-03-28 09:37:44
○CNAMEdns54.xiaoyida.net2015-11-25 → 2017-06-18 · 5 obs
● 2015-11-25 00:31:06
● 2017-06-18 03:41:54
○ 2026-03-23 14:17:38
○ 2026-03-28 09:37:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, d.dns.cn, b.dns.cn, c.dns.cn... | - |
| stdoctors.cn | ns1.nowcndns.com, ns2.nowcndns.com | - |
✅ Authoritative Response
Server:183.253.57.202
NS records: ns1.nowcndns.com, ns2.nowcndns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for stdoctors.cn (unsigned zone)
⏱️ Timing
Total: 1879ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.240.24.136 |
| NS | 2 | ns1.nowcndns.com, ns2.nowcndns.com |
| SOA | 1 | ns1.nowcndns.com admin.nowcndns.com |
Analysis
Hierarchy
The parent of www.stdoctors.cn is stdoctors.cn.
IP Addresses
stdoctors.cn points to a single IP: 156.240.24.136.
Other host names such as aqbt.cn and gdzsqj.cn share IP numbers with stdoctors.cn.
Name Servers
Two name servers ns1.nowcndns.com and ns2.nowcndns.com handle delegation for stdoctors.cn.
stdoctors.cn uses the same name server setup as other domains, for example lnnet.com.cn, siliconebottle.cn, ywxjms.cn, jyjxzz.cn and haojc.cn.
Host names with three IP numbers:
ns1.nowcndns.com points to 1.193.216.204, 218.98.111.129 and 218.98.111.138.
ns2.nowcndns.com points to 61.158.128.11, 183.253.57.202 and 211.99.99.38.