html-courses.com - robtex.com
html-courses.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=1774400362 | ||||||
Same first word
html-courses.com |
Similar names
DNS History
14 records (0 active, 14 former)
○NSns03.domaincontrol.com2007-11-07 → 2017-06-03 · 4 obs
● 2007-11-07 01:01:44
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○NSns04.domaincontrol.com2007-11-07 → 2017-06-03 · 4 obs
● 2007-11-07 01:01:44
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○NSns11.domaincontrol.com2026-02-19 → 2026-02-19 · 4 obs
○ 2017-06-03 00:59:38
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
○NSns12.domaincontrol.com2026-02-19 → 2026-02-19 · 4 obs
○ 2017-06-03 00:59:38
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
○NSns3.afternic.com2026-02-19 → 2026-03-25 · 2 obs
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○ 2026-03-25 01:22:50
○NSns4.afternic.com2026-02-19 → 2026-03-25 · 2 obs
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○ 2026-03-25 01:22:50
○MX.2026-02-19 → 2026-03-25 · 2 obs
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○ 2026-03-25 01:22:50
○A13.248.169.482026-02-19 → 2026-03-25 · 2 obs
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○ 2026-03-25 01:22:50
○A13.248.213.452026-02-19 → 2026-02-19 · 4 obs
○ 2017-06-03 00:59:38
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
○A209.216.0.122007-11-07 → 2007-11-07 · 3 obs
● 2007-11-07 01:01:44
○ 2015-08-08 00:51:16
○ 2026-03-25 01:22:50
○ 2015-08-08 00:51:16
○ 2026-03-25 01:22:50
○A216.248.195.2292015-11-30 → 2017-06-03 · 5 obs
○ 2015-08-08 00:51:16
● 2015-11-30 09:36:50
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
● 2015-11-30 09:36:50
● 2017-06-03 00:59:38
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○A76.12.17.2522015-08-08 → 2015-08-08 · 4 obs
○ 2007-11-07 01:01:44
● 2015-08-08 00:51:16
○ 2015-11-30 09:36:50
○ 2026-03-25 01:22:50
● 2015-08-08 00:51:16
○ 2015-11-30 09:36:50
○ 2026-03-25 01:22:50
○A76.223.54.1462026-02-19 → 2026-03-25 · 2 obs
○ 2026-02-19 21:55:38
○ 2026-03-25 01:22:50
○ 2026-03-25 01:22:50
○A76.223.67.1892026-02-19 → 2026-02-19 · 4 obs
○ 2017-06-03 00:59:38
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
● 2026-02-19 21:55:38
○ 2026-03-25 01:22:48
○ 2026-03-25 01:22:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.31.80.30
NS records: d.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 113ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|