ctdoor.cn - robtex.com
ctdoor.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 178.107.176.150🇬🇧 BT-UK-AS178.107.128.0/17 Globaldata Investments INC Suite 3346 1055 West 7th street,Los Angeles | ||||||
| NS | ns1.sharesdns.com ⭐ | ||||||
| A | 154.86.21.194🇭🇰 HKCICL-AS-AP154.86.21.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED | ||||||
| A | 177.2.31.194🇧🇷 AS-V177.2.0.0/18 | ||||||
| NS | ns2.sharesdns.com | ||||||
| A | 154.86.21.195🇭🇰 HKCICL-AS-AP154.86.21.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED | ||||||
| A | 177.2.31.195🇧🇷 AS-V177.2.0.0/18 | ||||||
| SOA | ns1.sharesdns.comadmin@sharesdns.com serial=1775115166 | ||||||
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 2035-10-26 #60 | ||||||
Same first word
ctdoor.cn |
Similar names
DNS History
3 records (3 active, 0 former)
●NSns1.sharesdns.com2026-07-05 → 2026-07-28 · 2 obs
● 2026-07-05 04:22:20
● 2026-07-28 20:02:56
● 2026-07-28 20:02:56
●NSns2.sharesdns.com2026-07-05 → 2026-07-28 · 2 obs
● 2026-07-05 04:22:20
● 2026-07-28 20:02:56
● 2026-07-28 20:02:56
●A178.107.176.1502026-07-05 → 2026-07-28 · 2 obs
● 2026-07-05 04:22:20
● 2026-07-28 20:02:56
● 2026-07-28 20:02:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ctdoor.cn | ns1.sharesdns.com, ns2.sharesdns.com | - |
✅ Authoritative Response
Server:177.2.31.194
NS records: ns1.sharesdns.com, ns2.sharesdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctdoor.cn (unsigned zone)
⏱️ Timing
Total: 3185ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 178.107.176.150 |
| NS | 2 | ns1.sharesdns.com, ns2.sharesdns.com |
| SOA | 1 | ns1.sharesdns.com admin.sharesdns.com |
Analysis
IP Addresses
ctdoor.cn resolves to just one IP address, 178.107.176.150.
Name Servers
ctdoor.cn uses two name servers for its delegation: ns1.sharesdns.com and ns2.sharesdns.com.
ctdoor.cn shares its NS records with other domains, for example shyg-magnets.com, nhzx.net.cn, rhvacnet.com and two others.
The two host names ns1.sharesdns.com and ns2.sharesdns.com each have a pair of IP addresses: ns1.sharesdns.com has 154.86.21.194 and 177.2.31.194, and ns2.sharesdns.com has 154.86.21.195 and 177.2.31.195.