gradschool.us - robtex.com
gradschool.us
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1785789332 | ||||||
Subdomains
www.gradschool.us |
Same first word
gradschool.tv |
gradschool.co |
gradschool.com |
gradschool.jp |
gradschool.info |
gradschool.ca |
gradschool.de |
gradschool.net |
gradschool.us |
Similar names
DNS History
13 records (6 active, 7 former)
○NSns.rackspace.com2015-05-22 → 2016-07-20 · 4 obs
● 2016-07-20 15:21:42
○ 2017-03-28 18:51:30
○ 2026-08-03 20:51:22
○NSns2.rackspace.com2015-05-22 → 2016-07-20 · 4 obs
● 2016-07-20 15:21:42
○ 2017-03-28 18:51:30
○ 2026-08-03 20:51:22
○NSns57.domaincontrol.com2017-03-28 → 2017-03-28 · 4 obs
● 2017-03-28 18:51:30
○ 2020-01-07 15:22:36
○ 2026-08-03 20:51:22
○NSns58.domaincontrol.com2017-03-28 → 2017-03-28 · 4 obs
● 2017-03-28 18:51:30
○ 2020-01-07 15:22:36
○ 2026-08-03 20:51:22
●NSpdns03.domaincontrol.com2020-01-07 → 2026-08-03 · 3 obs
● 2020-01-07 15:22:36
● 2026-08-03 20:51:22
●NSpdns04.domaincontrol.com2020-01-07 → 2026-08-03 · 3 obs
● 2020-01-07 15:22:36
● 2026-08-03 20:51:22
○MXmail.studyabroad.com2015-05-22 → 2016-07-20 · 4 obs
● 2016-07-20 15:21:42
○ 2017-03-28 18:51:30
○ 2026-08-03 20:51:22
●MXmailstore1.secureserver.net2017-03-28 → 2026-08-03 · 3 obs
● 2017-03-28 18:51:30
● 2026-08-03 20:51:22
●MXsmtp.secureserver.net2017-03-28 → 2026-08-03 · 3 obs
● 2017-03-28 18:51:30
● 2026-08-03 20:51:22
○A147.31.204.1392015-05-22 → 2016-07-20 · 4 obs
● 2016-07-20 15:21:42
○ 2017-03-28 18:51:30
○ 2026-08-03 20:51:22
●A15.197.148.332026-06-11 → 2026-08-03 · 3 obs
● 2026-06-11 05:06:54
● 2026-08-03 20:51:22
●A3.33.130.1902026-06-11 → 2026-08-03 · 3 obs
● 2026-06-11 05:06:54
● 2026-08-03 20:51:22
○A50.63.202.542017-03-28 → 2020-01-07 · 5 obs
● 2017-03-28 18:51:30
● 2020-01-07 15:22:36
○ 2026-06-11 05:06:54
○ 2026-08-03 20:51:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | k.cctld.us, m.cctld.us, b.cctld.us, x.cctld.us... | - |
| gradschool.us | pdns03.domaincontrol.com, pdns04.domaincontrol.com | - |
✅ Authoritative Response
Server:173.201.79.51
NS records: pdns03.domaincontrol.com, pdns04.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gradschool.us (unsigned zone)
⏱️ Timing
Total: 420ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.33.130.190, 15.197.148.33 |
| NS | 2 | pdns03.domaincontrol.com, pdns04.domaincontrol.com |
| MX | 2 | smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10) |
| SOA | 1 | pdns03.domaincontrol.com dns.jomax.net |
Analysis
Hierarchy
gradschool.us is a parent domain of www.gradschool.us.
IP Addresses
gradschool.us directs to two IP numbers, 3.33.130.190 and 15.197.148.33
agroecou.com, techrrc.com, boxcino.com and two other host names share IP numbers with gradschool.us.
Name Servers
gradschool.us has two authoritative name servers — pdns03.domaincontrol.com and pdns04.domaincontrol.com.
gradschool.us uses the same name servers as several other domains — among them radiustoday.com, dosomethingexceptional.com, spatialweb.com and two more.
The name servers for gradschool.us are partially shared with other domains like lacura.es, focushs.com and eperrotta.com
Both pdns03.domaincontrol.com and pdns04.domaincontrol.com have two IP addresses each. pdns03.domaincontrol.com resolves to 97.74.111.51 and 2603:5:21f0::33; pdns04.domaincontrol.com resolves to 173.201.79.51 and 2603:5:22f0::33.
Mail Servers
Mail for gradschool.us is handled by two mail servers — mailstore1.secureserver.net and smtp.secureserver.net.
gradschool.us uses an identical mail server configuration to several other domains — among them advantage-property-management.com, wowbrandsdev.com, charter-bus.org and two more.
gradschool.us shares at least some of its mail servers with other domains, such as neurocurso.com.
mailstore1.secureserver.net and smtp.secureserver.net each resolve to three IP addresses. mailstore1.secureserver.net resolves to 216.69.141.78, 216.69.141.114 and 216.69.141.162. smtp.secureserver.net resolves to 216.69.141.71, 216.69.141.84 and 216.69.141.113.