docourses.com - dns.ninja
docourses.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=1780881176 | ||||||
Subdomains
Same first word
docourses.com |
Similar names
DNS History
26 records (0 active, 26 former)
○NSalla.ns.cloudflare.com2017-02-16 → 2019-02-06 · 5 obs
○ 2016-06-27 13:52:16
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○NSmark.ns.cloudflare.com2017-02-16 → 2019-02-06 · 5 obs
○ 2016-06-27 13:52:16
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○NSns0.phase8.net2015-08-03 → 2016-06-27 · 4 obs
● 2015-08-03 16:33:18
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
○NSns1.namebrightdns.com2026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○NSns1.parklogic.com2026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○NSns1.phase8.net2015-08-03 → 2016-06-27 · 4 obs
● 2015-08-03 16:33:18
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
○NSns1.rr585.parklogic.com2026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○NSns2.namebrightdns.com2026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○NSns2.parklogic.com2026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○NSns2.phase8.net2015-08-03 → 2016-06-27 · 4 obs
● 2015-08-03 16:33:18
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
○NSns2.rr585.parklogic.com2026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○MXmail.docourses.com2015-08-03 → 2016-06-27 · 4 obs
● 2015-08-03 16:33:18
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
● 2016-06-27 13:52:16
○ 2017-02-16 10:39:02
○ 2026-06-08 01:40:48
○MXmx156.hostedmxserver.com2026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○MXmxa.mailgun.org2017-02-16 → 2019-02-06 · 5 obs
○ 2016-06-27 13:52:16
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○MXmxb.mailgun.org2017-02-16 → 2019-02-06 · 5 obs
○ 2016-06-27 13:52:16
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2017-02-16 10:39:02
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○A172.233.219.1232026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A172.233.219.492026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A172.233.219.782026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A172.237.146.252026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A172.237.146.382026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A172.237.146.82026-04-02 → 2026-06-08 · 2 obs
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○ 2026-06-08 01:40:48
○A2600:1f18:4ae:c607:5974:bfa8:d54b:7fe52026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○A2600:1f18:4ae:c608:1ae1:9fc3:6ee2:84dd2026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○A44.208.83.1802026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○A54.84.240.2352026-04-02 → 2026-04-02 · 3 obs
○ 2019-02-06 17:55:12
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
○A88.80.191.1752015-08-03 → 2019-02-06 · 4 obs
● 2015-08-03 16:33:18
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
● 2019-02-06 17:55:12
○ 2026-04-02 15:00:14
○ 2026-06-08 01:40:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.35.51.30
NS records: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 225ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|