gtdedu.com - robtex.com
gtdedu.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=1785200692 | ||||||
Subdomains
mail.gtdedu.com |
Same first word
gtdedu.com |
DNS History
12 records (4 active, 8 former)
●NSns1.cnolnic.net2026-07-12 → 2026-07-28 · 3 obs
● 2026-07-12 00:25:52
● 2026-07-28 01:10:26
●NSns2.cnolnic.net2026-07-12 → 2026-07-28 · 3 obs
● 2026-07-12 00:25:52
● 2026-07-28 01:10:26
○NSns87.worldnic.com2008-03-14 → 2017-09-22 · 4 obs
● 2017-09-22 15:39:24
○ 2026-07-12 00:25:52
○ 2026-07-28 01:10:26
○NSns88.worldnic.com2008-03-14 → 2017-09-22 · 4 obs
● 2017-09-22 15:39:24
○ 2026-07-12 00:25:52
○ 2026-07-28 01:10:26
●MXgtdedu-com.mail.protection.outlook.com2026-07-12 → 2026-07-28 · 3 obs
● 2026-07-12 00:25:52
● 2026-07-28 01:10:26
○MXmail.gtdedu.com2008-03-14 → 2008-03-14 · 3 obs
○ 2015-07-23 10:10:48
○ 2026-07-28 01:10:26
○MXmxcom.263xmail.com2015-07-23 → 2017-09-22 · 5 obs
● 2015-07-23 10:10:48
● 2017-09-22 15:39:24
○ 2026-07-12 00:25:52
○ 2026-07-28 01:10:26
○MXmxwcom.263xmail.com2015-07-23 → 2017-09-22 · 5 obs
● 2015-07-23 10:10:48
● 2017-09-22 15:39:24
○ 2026-07-12 00:25:52
○ 2026-07-28 01:10:26
●A103.40.192.1322026-07-12 → 2026-07-28 · 3 obs
● 2026-07-12 00:25:52
● 2026-07-28 01:10:26
○A222.73.173.602016-08-08 → 2017-09-22 · 5 obs
● 2016-08-08 17:03:52
● 2017-09-22 15:39:24
○ 2026-07-12 00:25:52
○ 2026-07-28 01:10:26
○A61.152.105.82008-03-14 → 2008-03-14 · 3 obs
○ 2015-07-23 10:10:48
○ 2026-07-28 01:10:26
○A61.152.93.342015-07-23 → 2015-11-16 · 5 obs
● 2015-07-23 10:10:48
● 2015-11-16 03:57:40
○ 2016-08-08 17:03:52
○ 2026-07-28 01:10:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| gtdedu.com | ns1.cnolnic.net, ns2.cnolnic.net | - |
✅ Authoritative Response
Server:106.12.41.177
NS records: ns1.cnolnic.net, ns2.cnolnic.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gtdedu.com (unsigned zone)
⏱️ Timing
Total: 1109ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.40.192.132 |
| NS | 2 | ns2.cnolnic.net, ns1.cnolnic.net |
| MX | 1 | gtdedu-com.mail.protection.outlook.com ( |
| TXT | 2 | v=spf1 include:spf.protection.outlook.co, MS=ms38172748 |
| SOA | 1 | ns1.cnolnic.net root.cnolnic.net |
Analysis
Hierarchy
mail.gtdedu.com is delegated beneath gtdedu.com.
IP Addresses
gtdedu.com points to a single IP number: 103.40.192.132.
Additional host names — bikenano.com, pu-en.cn, shqiaowang.com and two others — share IP numbers with gtdedu.com.
Name Servers
The NS records for gtdedu.com delegate to ns1.cnolnic.net and ns2.cnolnic.net.
gtdedu.com shares its name server setup with other domains, including pmgz.cc, nam.cn, oxi-tech.com and two others.
ns1.cnolnic.net points to 106.13.136.254, 182.61.7.97 and 240c:4082:0:5d80::2. ns2.cnolnic.net points to 106.12.41.177, 180.76.132.69 and 240c:4081:8000:1702::3. Both hosts resolve to three IP numbers.
Mail Servers
gtdedu.com has one mail server: gtdedu-com.mail.protection.outlook.com.
gtdedu-com.mail.protection.outlook.com points to 6 IP numbers: 52.101.124.117, 52.101.137.0, 52.101.157.80 and 3 other.