400help.cn - robtex.com
400help.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 168.76.252.109🇿🇦 ASLINE-AS-AP168.76.252.0/24 Proxy-registered route object | ||||||
| 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=1766739445 | ||||||
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=2034598105 | ||||||
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
○NSdns19.hichina.com2015-07-14 → 2017-08-16 · 4 obs
● 2017-08-16 06:31:14
○ 2026-03-04 09:24:10
○ 2026-03-28 08:51:18
○NSdns20.hichina.com2015-07-14 → 2017-08-16 · 4 obs
● 2017-08-16 06:31:14
○ 2026-03-04 09:24:10
○ 2026-03-28 08:51:18
●NSns1.judns.com2026-03-04 → 2026-03-28 · 3 obs
● 2026-03-04 09:24:10
● 2026-03-28 08:51:18
●NSns1.julydns.com2026-03-04 → 2026-03-28 · 3 obs
● 2026-03-04 09:24:10
● 2026-03-28 08:51:18
●NSns2.judns.com2026-03-04 → 2026-03-28 · 3 obs
● 2026-03-04 09:24:10
● 2026-03-28 08:51:18
●NSns2.julydns.com2026-03-04 → 2026-03-28 · 3 obs
● 2026-03-04 09:24:10
● 2026-03-28 08:51:18
○A121.199.1.402016-03-13 → 2017-08-16 · 5 obs
● 2016-03-13 21:43:22
● 2017-08-16 06:31:14
○ 2026-03-04 09:24:10
○ 2026-03-28 08:51:18
●A168.76.252.1092026-03-04 → 2026-03-28 · 3 obs
● 2026-03-04 09:24:10
● 2026-03-28 08:51:18
○A223.4.216.1532015-07-14 → 2015-11-18 · 4 obs
● 2015-11-18 08:42:36
○ 2016-03-13 21:43:22
○ 2026-03-28 08:51:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| 400help.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 400help.cn (unsigned zone)
⏱️ Timing
Total: 3343ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 168.76.252.109 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
400help.cn points to a single IP number: 168.76.252.109.
other host names for instance dt-jx56.com, www.nksyjj.net, ml801.com, 04oe.cn and qihaomen.com share IP numbers with 400help.cn.
Name Servers
400help.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
400help.cn at least partially shares name servers with other domains, for instance xewnd.cn, bjtcsx.com, xandaitech.com, csxhbxw.cn and waiyuqinggan.com.
These name servers are often used with jm1.dns.com and jm2.dns.com.
Host names with one IP number:
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.
Host names pointing to 47.97.51.45: ns1.judns.com and ns1.julydns.com.