ctdcdn.com - robtex.com
ctdcdn.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.ctdcdn.com ⭐ | ||||||
| A | 101.36.129.118🇨🇳 CHINAMOBILE-CN101.36.128.0/20 | ||||||
| A | 203.80.139.97🇯🇵 CTGNet203.80.139.0/24 China Telecom Global networks | ||||||
| NS | ns2.ctdcdn.com | ||||||
| A | 121.46.23.58🇨🇳 AOFEI-HK121.46.20.0/22 OFFEI-HK | ||||||
| A | 202.55.2.69🇭🇰 CTGNet202.55.2.0/24 China Telecom Global Limited 38/F DAH SING Financial Center 108 Gloucester Road Wan Chai | ||||||
| NS | ns3.ctdcdn.com | ||||||
| A | 180.153.82.100🇨🇳 SHANGHAITELECOM180.153.82.0/24 SHIDC | ||||||
| A | 202.55.2.71🇭🇰 CTGNet202.55.2.0/24 China Telecom Global Limited 38/F DAH SING Financial Center 108 Gloucester Road Wan Chai | ||||||
| NS | ns4.ctdcdn.com | ||||||
| A | 240e:f7:4d80:300::57🇨🇳 CHINANET-BACKBONE240e:f6::/31 China Telecom (Zhejiang) Limited | ||||||
| A | 203.80.139.82🇯🇵 CTGNet203.80.139.0/24 China Telecom Global networks | ||||||
| SOA | ns1.ctdcdn.comweb@ctdcdn.com serial=118773350 | ||||||
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=1776019902 | ||||||
Subdomains
Same first word
DNS History
4 records (4 active, 0 former)
●NSns1.ctdcdn.com2026-02-14 → 2026-04-12 · 2 obs
● 2026-04-12 19:00:30
●NSns2.ctdcdn.com2026-02-14 → 2026-04-12 · 2 obs
● 2026-04-12 19:00:30
●NSns3.ctdcdn.com2026-02-14 → 2026-04-12 · 2 obs
● 2026-04-12 19:00:30
●NSns4.ctdcdn.com2026-02-14 → 2026-04-12 · 2 obs
● 2026-04-12 19:00:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ctdcdn.com | ns1.ctdcdn.com, ns2.ctdcdn.com, ns3.ctdcdn.com, ns4.ctdcdn.com | 8 records |
✅ Authoritative Response
Server:101.36.129.118
NS records: ns1.ctdcdn.com, ns2.ctdcdn.com, ns3.ctdcdn.com, ns4.ctdcdn.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctdcdn.com (unsigned zone)
⏱️ Timing
Total: 665ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns4.ctdcdn.com, ns2.ctdcdn.com... |
| SOA | 1 | ns1.ctdcdn.com web.ctdcdn.com |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (ns1.ctdcdn.com, ns1.ctdcdn.com, ns2.ctdcdn.com...)
Analysis
Hierarchy
ctdcdn.com is a parent of ns2.ctdcdn.com, ns1.ctdcdn.com, ns3.ctdcdn.com and ns4.ctdcdn.com.
Name Servers
ctdcdn.com delegates to four name servers: ns1.ctdcdn.com, ns2.ctdcdn.com, ns3.ctdcdn.com and ns4.ctdcdn.com.
Host names with two IP numbers: ns1.ctdcdn.com points to 101.36.129.118 and 203.80.139.97; ns2.ctdcdn.com points to 121.46.23.58 and 202.55.2.69; ns3.ctdcdn.com points to 180.153.82.100 and 202.55.2.71; ns4.ctdcdn.com points to 240e:f7:4d80:300::57 and 203.80.139.82.