7classroom.com - robtex.com
7classroom.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786046784 | ||||||
Same first word
7classroom.com |
DNS History
10 records (7 active, 3 former)
●NSdns11.hichina.com2026-08-03 → 2026-08-06 · 3 obs
● 2026-08-03 02:27:30
● 2026-08-06 20:27:20
●NSdns12.hichina.com2026-08-03 → 2026-08-06 · 3 obs
● 2026-08-03 02:27:30
● 2026-08-06 20:27:20
○NSdns7.hichina.com2015-04-22 → 2015-04-22 · 3 obs
○ 2015-10-12 18:28:10
○ 2026-08-06 20:27:20
○NSdns8.hichina.com2015-04-22 → 2015-04-22 · 3 obs
○ 2015-10-12 18:28:10
○ 2026-08-06 20:27:20
●MXmxn.mxhichina.com2026-08-03 → 2026-08-06 · 2 obs
● 2026-08-06 20:27:20
●MXmxw.mxhichina.com2026-08-03 → 2026-08-06 · 2 obs
● 2026-08-06 20:27:20
○A103.27.110.1712015-04-22 → 2015-04-22 · 3 obs
○ 2015-10-12 18:28:10
○ 2026-08-06 20:27:20
●A47.111.221.1042026-08-03 → 2026-08-06 · 3 obs
● 2026-08-03 02:27:30
● 2026-08-06 20:27:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net... | - |
| 7classroom.com | dns11.hichina.com, dns12.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.41
NS records: dns11.hichina.com, dns12.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 7classroom.com (unsigned zone)
⏱️ Timing
Total: 514ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 47.111.221.104 |
| NS | 2 | dns12.hichina.com, dns11.hichina.com |
| MX | 4 | mxbiz2.qq.com (pri: 10), mxw.mxhichina.com (pri: 10)... |
| SOA | 1 | dns11.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns11.hichina.com, dns11.hichina.com, dns11.hichina.com...)
Analysis
IP Addresses
7classroom.com resolves to one IP address: 47.111.221.104.
ua-api.7net.cc is an example of another host name that shares IP numbers with 7classroom.com.
Name Servers
7classroom.com has two authoritative name servers — dns11.hichina.com and dns12.hichina.com.
7classroom.com uses the same name servers as several other domains — among them nciic.org.cn, xinxzn.com, bonpro.net and two more.
The name servers for 7classroom.com are partially shared with other domains like sendaicorp.com, estack.net and lubanmall.com
Hostnames that resolve to 9 IP addresses:
dns11.hichina.com points to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 other IP addresses.
dns12.hichina.com points to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 other IP addresses.
Mail Servers
Four mail servers handle email for 7classroom.com: mxn.mxhichina.com, mxw.mxhichina.com, mxbiz1.qq.com and mxbiz2.qq.com.
7classroom.com has at least partial mail server overlap with other domains such as hyhuade.com, hongchengweixin.com, polarwin.cn and two more.
This set of mail servers commonly appears together with the mail servers mxdomain.qq.com.
Hostnames that resolve to two IP addresses:
mxn.mxhichina.com resolves to 47.246.136.231 and 47.246.137.47.
Hosts with just one IP address:
mxw.mxhichina.com resolves to 47.246.99.195.