ctsr.cn - robtex.com
ctsr.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 199.241.3.81🇺🇸 TELX-AS21859199.241.0.0/21 ZL-IDC-LAX-W50523 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1771048639 | ||||||
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=2034595651 | ||||||
Same first word
Similar names
DNS History
12 records (5 active, 7 former)
○NSns1.alidns.com2015-10-13 → 2016-11-20 · 4 obs
● 2016-11-20 10:32:50
○ 2026-03-27 09:58:04
○ 2026-03-27 21:10:00
●NSns1.judns.com2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 09:58:04
● 2026-03-27 21:10:00
●NSns1.julydns.com2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 09:58:04
● 2026-03-27 21:10:00
○NSns2.alidns.com2015-10-13 → 2016-11-20 · 4 obs
● 2016-11-20 10:32:50
○ 2026-03-27 09:58:04
○ 2026-03-27 21:10:00
●NSns2.judns.com2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 09:58:04
● 2026-03-27 21:10:00
●NSns2.julydns.com2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 09:58:04
● 2026-03-27 21:10:00
○MXmail.skrimple.com2015-05-22 → 2017-07-06 · 6 obs
○ 2015-10-13 20:46:52
○ 2016-11-20 10:32:50
● 2017-07-06 15:52:14
○ 2026-03-27 09:58:04
○ 2026-03-27 21:10:00
○A103.232.215.1292017-07-06 → 2017-07-06 · 4 obs
● 2017-07-06 15:52:14
○ 2026-03-27 09:58:04
○ 2026-03-27 21:10:00
○A124.16.31.1522015-10-13 → 2016-11-20 · 5 obs
● 2015-10-13 20:46:52
● 2016-11-20 10:32:50
○ 2017-07-06 15:52:14
○ 2026-03-27 21:10:00
●A199.241.3.812026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 09:58:04
● 2026-03-27 21:10:00
○A205.164.14.672015-05-22 → 2015-05-22 · 3 obs
○ 2015-10-13 20:46:52
○ 2026-03-27 21:10:00
○A205.164.14.762015-05-22 → 2015-05-22 · 3 obs
○ 2017-07-06 15:52:14
○ 2026-03-27 21:10:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, e.dns.cn, d.dns.cn, c.dns.cn... | - |
| ctsr.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctsr.cn (unsigned zone)
⏱️ Timing
Total: 2468ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 199.241.3.81 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
ctsr.cn resolves to one IP number: 199.241.3.81.
Other host names, for instance lx73.com, xinxisy.com, yl.gx.cn, pinjiuzhijia.com and njsym.cn share IP numbers with ctsr.cn.
Name Servers
ctsr.cn delegates to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
ctsr.cn at least partially shares name servers with other domains, including sdguache.cn, jewelrye.com, acgmart.com, siquankeji.cn and lengtianqing.com.
These name servers are commonly used with jm1.dns.com.
Hostnames with a single IP:
ns1.judns.com points to 47.97.51.45.
ns2.judns.com points to 162.159.27.251.
ns1.julydns.com points to 47.97.51.45.
ns2.julydns.com points to 162.159.48.223.
Hostnames that point to 47.97.51.45: ns1.judns.com and ns1.julydns.com.