suredoc.cn - robtex.com
suredoc.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 119.91.84.80🇨🇳 TENCENT-NET-AP119.91.64.0/18 CTJS-NJJS-IDC-tencent | ||||||
| NS | dns27.hichina.com ⭐ | ||||||
| A | 2408:4009:501::35🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.39🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.59🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.199🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.219🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.39🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.59🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.99🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.109🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | dns28.hichina.com | ||||||
| A | 2408:4009:501::36🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.37🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.62🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.197🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.221🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.37🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.62🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.102🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.107🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| MX | mxbiz1.qq.com ⭐ | ||||||
| MX | mxbiz2.qq.com(10) | ||||||
| SOA | dns27.hichina.comhostmaster@hichina.com 2026-05-28 #9 | ||||||
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=2035026809 | ||||||
Subdomains
cdn.suredoc.cn |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSdns27.hichina.com2026-06-29 → 2026-07-10 · 2 obs
● 2026-07-10 23:07:28
●NSdns28.hichina.com2026-06-29 → 2026-07-10 · 2 obs
● 2026-07-10 23:07:28
●A119.91.84.802026-07-08 → 2026-07-10 · 2 obs
● 2026-07-10 23:07:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| suredoc.cn | dns27.hichina.com, dns28.hichina.com | - |
✅ Authoritative Response
Server:139.224.142.107
NS records: dns27.hichina.com, dns28.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for suredoc.cn (unsigned zone)
⏱️ Timing
Total: 4091ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 119.91.84.80 |
| NS | 2 | dns28.hichina.com, dns27.hichina.com |
| MX | 2 | mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5) |
| SOA | 1 | dns27.hichina.com hostmaster.hichina.com |
Analysis
Hierarchy
cdn.suredoc.cn is a subdomain of suredoc.cn.
IP Addresses
suredoc.cn resolves to just one IP address, 119.91.84.80.
Name Servers
Two name servers handle the delegation for suredoc.cn: dns27.hichina.com and dns28.hichina.com.
suredoc.cn shares its NS records with other domains, for example opentidechina.com.cn, facs.com.cn, jnpush.com and two others.
The name servers of suredoc.cn overlap at least partially with those of other domains — among them wqzm.com, iliwei.com, 97yxt.com and two more.
These name servers commonly co-occur with the name servers ns1.alidns.com, expirens3.hichina.com, expirens4.hichina.com and dns30.hichina.com.
DNS names with 9 IP addresses:
dns27.hichina.com resolves to 39.96.153.39, 39.96.153.59 and 47.118.199.199 among others, with 6 other IP addresses in total.
dns28.hichina.com resolves to 39.96.153.37, 39.96.153.62 and 47.118.199.197 among others, with 6 other IP addresses in total.
Mail Servers
suredoc.cn is served by two mail servers, mxbiz1.qq.com and mxbiz2.qq.com.
Among the domains sharing a mail server setup with suredoc.cn are baiyunair.com, cctvdiy.com.au, imiker.com and two others.
There is at least a partial MX overlap between suredoc.cn and other domains, including kond.com.cn, mcapi.cn, 365soft.com and two others.