courseforfree.net - robtex.com
courseforfree.net
| DNSSEC | ⚠️ Not signed | ||||||
net
| 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=1784591877 | ||||||
Same first word
courseforfree.net |
courseforfree.com |
DNS History
13 records (0 active, 13 former)
○NSa.share-dns.com2026-03-25 → 2026-05-05 · 5 obs
○ 2020-02-25 16:04:24
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
○NSa5.share-dns.com2026-03-25 → 2026-05-05 · 5 obs
○ 2020-02-25 16:04:24
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
○NSb.share-dns.net2026-03-25 → 2026-05-05 · 5 obs
○ 2020-02-25 16:04:24
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
○NSb5.share-dns.net2026-03-25 → 2026-05-05 · 5 obs
○ 2020-02-25 16:04:24
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
○NSdns1.namecheaphosting.com2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 16:04:24
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○NSdns2.namecheaphosting.com2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 16:04:24
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○NSns1637.ztomy.com2026-06-02 → 2026-06-07 · 4 obs
○ 2026-05-05 07:28:46
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
○NSns2637.ztomy.com2026-06-02 → 2026-06-07 · 4 obs
○ 2026-05-05 07:28:46
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
○MX~2026-06-02 → 2026-06-07 · 4 obs
○ 2026-03-25 22:09:06
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
○MXmail.courseforfree.net2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 16:04:24
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○A172.87.216.1212026-03-25 → 2026-05-05 · 5 obs
○ 2020-02-25 16:04:24
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
● 2026-03-25 22:09:06
● 2026-05-05 07:28:46
○ 2026-06-02 05:18:40
○ 2026-07-21 00:20:06
○A204.11.56.372026-06-02 → 2026-06-07 · 4 obs
○ 2026-05-05 07:28:46
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
● 2026-06-02 05:18:40
● 2026-06-07 13:09:52
○ 2026-07-21 00:20:06
○A63.250.38.92020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 16:04:24
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
○ 2026-03-25 22:09:06
○ 2026-07-21 00:20:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | k.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.33.14.30
NS records: k.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 560ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|