btechclasses.com - robtex.com
btechclasses.com
| DNSSEC | ⚠️ Not signed | ||||||
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=1790534609 | ||||||
Previous names
Next names
DNS History
14 records (0 active, 14 former)
○NSns1.linode.com2015-08-27 → 2016-01-24 · 5 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○NSns2.linode.com2015-08-27 → 2016-01-24 · 5 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○NSns3.linode.com2015-08-27 → 2016-01-24 · 5 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○NSns4.linode.com2015-08-27 → 2016-01-24 · 5 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○NSns45.domaincontrol.com2015-09-24 → 2015-09-24 · 4 obs
○ 2015-08-27 12:29:06
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
○NSns46.domaincontrol.com2015-09-24 → 2015-09-24 · 4 obs
○ 2015-08-27 12:29:06
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
○NSns5.linode.com2015-08-27 → 2016-01-24 · 5 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○MXmail.btechclasses.com2015-08-27 → 2015-08-27 · 3 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
○ 2026-09-27 19:04:44
○MXmailstore1.secureserver.net2015-09-24 → 2015-09-24 · 4 obs
○ 2015-08-27 12:29:06
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
○MXsmtp.secureserver.net2015-09-24 → 2015-09-24 · 4 obs
○ 2015-08-27 12:29:06
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
○A173.230.145.2282015-08-27 → 2015-08-27 · 3 obs
● 2015-08-27 12:29:06
○ 2015-09-24 01:23:46
○ 2026-09-27 19:04:44
○ 2015-09-24 01:23:46
○ 2026-09-27 19:04:44
○A184.168.221.332015-09-24 → 2015-09-24 · 4 obs
○ 2015-08-27 12:29:06
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
● 2015-09-24 01:23:46
○ 2016-01-24 19:47:26
○ 2026-09-27 19:04:44
○A2600:3c00::f03c:91ff:fef1:a89c2016-01-24 → 2016-01-24 · 4 obs
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
○A45.33.29.732016-01-24 → 2016-01-24 · 4 obs
○ 2015-09-24 01:23:46
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
● 2016-01-24 19:47:26
○ 2016-04-28 17:44:22
○ 2026-09-27 19:04:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.31.80.30
NS records: l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net, e.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 197ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|