holdedu.cn - robtex.com
holdedu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 38.147.191.169🇺🇸 XNNET38.147.191.0/24 Proxy-registered route object | ||||||
| NS | ns1.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| NS | ns2.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| MX | mail.happyisp.com ⭐ | ||||||
| A | 5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24 | ||||||
| PTR | mail.happyisp.com | ||||||
| A | 137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean | ||||||
| PTR | mail.happyisp.com | ||||||
| TXT | v=spf1 ip6:fd0d:d741:e183::/48 -all | ||||||
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=2035170697 | ||||||
Same first word
Similar names
DNS History
15 records (4 active, 11 former)
○NSdns29.hichina.com2015-05-14 → 2017-04-18 · 4 obs
● 2017-04-18 16:48:02
○ 2026-06-29 18:45:06
○ 2026-08-12 05:56:22
○NSdns30.hichina.com2015-05-14 → 2017-04-18 · 4 obs
● 2017-04-18 16:48:02
○ 2026-06-29 18:45:06
○ 2026-08-12 05:56:22
●NSns1.exp.4cun.com2026-08-12 → 2026-08-12 · 3 obs
● 2026-08-12 05:56:18
● 2026-08-12 05:56:22
○NSns1.judns.com2026-06-29 → 2026-06-29 · 4 obs
● 2026-06-29 18:45:06
○ 2026-08-12 05:56:18
○ 2026-08-12 05:56:22
○NSns1.julydns.com2026-06-29 → 2026-06-29 · 4 obs
● 2026-06-29 18:45:06
○ 2026-08-12 05:56:18
○ 2026-08-12 05:56:22
●NSns2.exp.4cun.com2026-08-12 → 2026-08-12 · 3 obs
● 2026-08-12 05:56:18
● 2026-08-12 05:56:22
○NSns2.judns.com2026-06-29 → 2026-06-29 · 4 obs
● 2026-06-29 18:45:06
○ 2026-08-12 05:56:18
○ 2026-08-12 05:56:22
○NSns2.julydns.com2026-06-29 → 2026-06-29 · 4 obs
● 2026-06-29 18:45:06
○ 2026-08-12 05:56:18
○ 2026-08-12 05:56:22
●MXmail.happyisp.com2026-08-12 → 2026-08-12 · 3 obs
● 2026-08-12 05:56:18
● 2026-08-12 05:56:22
○MXmx.exmail.sina.com2015-05-14 → 2016-03-24 · 4 obs
● 2016-03-24 09:07:48
○ 2016-08-13 16:53:36
○ 2026-08-12 05:56:22
○MXmxbiz1.qq.com2016-08-13 → 2017-04-18 · 5 obs
● 2016-08-13 16:53:36
● 2017-04-18 16:48:02
○ 2026-06-29 18:45:06
○ 2026-08-12 05:56:22
○MXmxbiz2.qq.com2016-08-13 → 2017-04-18 · 5 obs
● 2016-08-13 16:53:36
● 2017-04-18 16:48:02
○ 2026-06-29 18:45:06
○ 2026-08-12 05:56:22
○A110.76.47.942015-05-14 → 2017-04-18 · 4 obs
● 2017-04-18 16:48:02
○ 2026-06-29 18:45:06
○ 2026-08-12 05:56:22
○A154.220.99.1972026-06-29 → 2026-06-29 · 4 obs
● 2026-06-29 18:45:06
○ 2026-08-12 05:56:18
○ 2026-08-12 05:56:22
●A38.147.191.1692026-08-12 → 2026-08-12 · 3 obs
● 2026-08-12 05:56:18
● 2026-08-12 05:56:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | d.dns.cn, b.dns.cn, a.dns.cn, c.dns.cn... | - |
| holdedu.cn | ns1.exp.4cun.com, ns2.exp.4cun.com | - |
✅ Authoritative Response
Server:43.165.183.246
NS records: ns1.exp.4cun.com, ns2.exp.4cun.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for holdedu.cn (unsigned zone)
⏱️ Timing
Total: 2340ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 38.147.191.169 |
| MX | 1 | mail.happyisp.com (pri: 1) |
| TXT | 1 | v=spf1 ip6:fd0d:d741:e183::/48 -all |
Analysis
IP Addresses
holdedu.cn resolves to just one IP address, 38.147.191.169.
Two other host names, along with wagezx.cn, 74090.cn and qq847.cn, also share IP numbers with holdedu.cn.
Name Servers
holdedu.cn uses two name servers for its delegation: ns1.exp.4cun.com and ns2.exp.4cun.com.
holdedu.cn shares its NS records with other domains, for example wdsyhb.com, lwswgs.com, maccas.cn and two others.
holdedu.cn and other domains like sp69.cn, hcmzw.cn and nxg728.com share some name servers
These name servers are often deployed together with the name servers ns3.exp.4cun.com, ns4.exp.4cun.com, ns5.exp.4cun.com and ns6.exp.4cun.com.
ns1.exp.4cun.com resolves to 43.165.183.246; ns2.exp.4cun.com resolves to the same IP address, 43.165.183.246.
Both ns1.exp.4cun.com and ns2.exp.4cun.com resolve to 43.165.183.246 IP addresses each.
Mail Servers
The sole mail server for holdedu.cn is mail.happyisp.com.
Among the domains sharing a mail server setup with holdedu.cn are anhan.cn, zaohe.cn, dianfa.cn and two others.
mail.happyisp.com directs to two IP numbers, 5.161.49.68 and 137.184.158.105.