ctans.cn - robtex.com
ctans.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.cnolnic.net ⭐ | ||||||
| A | 240c:4082:0:5d80::2🇨🇳 Baidu240c:4082::/32 | ||||||
| A | 106.13.136.254🇨🇳 Baidu106.13.128.0/19 AS38365 | ||||||
| A | 182.61.7.97🇨🇳 Baidu182.61.0.0/19 | ||||||
| NS | ns2.cnolnic.net | ||||||
| A | 240c:4081:8000:1702::3🇨🇳 Baidu240c:4081::/32 | ||||||
| A | 106.12.41.177🇨🇳 Baidu106.12.32.0/19 | ||||||
| A | 180.76.132.69🇨🇳 Baidu180.76.128.0/19 | ||||||
| SOA | ns1.cnolnic.netroot@cnolnic.net 2006-11-24 #1 | ||||||
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=2035044964 | ||||||
Same first word
Similar names
DNS History
3 records (2 active, 1 former)
●NSns1.cnolnic.net2015-06-17 → 2026-07-16 · 2 obs
● 2015-06-17 14:54:56
● 2026-07-16 00:58:28
● 2026-07-16 00:58:28
●NSns2.cnolnic.net2015-06-17 → 2026-07-16 · 2 obs
● 2015-06-17 14:54:56
● 2026-07-16 00:58:28
● 2026-07-16 00:58:28
○A61.139.126.212015-06-17 → 2017-12-13 · 4 obs
● 2015-06-17 14:54:56
● 2017-12-13 19:28:56
○ 2026-05-22 09:25:16
○ 2026-07-16 00:58:28
● 2017-12-13 19:28:56
○ 2026-05-22 09:25:16
○ 2026-07-16 00:58:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ctans.cn | ns1.cnolnic.net, ns2.cnolnic.net | - |
✅ Authoritative Response
Server:106.13.136.254
NS records: ns1.cnolnic.net, ns2.cnolnic.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctans.cn (unsigned zone)
⏱️ Timing
Total: 1666ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.cnolnic.net, ns2.cnolnic.net |
| SOA | 1 | ns1.cnolnic.net root.cnolnic.net |
Analysis
Name Servers
ctans.cn is served by two delegated name servers, ns1.cnolnic.net and ns2.cnolnic.net.
ctans.cn shares its NS records with other domains, for example fzpet.com, ppyan.com, jutuo025.com and two others.
Both ns1.cnolnic.net and ns2.cnolnic.net point to three IP numbers: ns1.cnolnic.net points to 106.13.136.254, 182.61.7.97 and 240c:4082:0:5d80::2, while ns2.cnolnic.net points to 106.12.41.177, 180.76.132.69 and 240c:4081:8000:1702::3.