21daycourse.com - robtex.com
21daycourse.com
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=1774569662 | ||||||
Same first word
21daycourse.com |
DNS History
10 records (5 active, 5 former)
●NSns15.domaincontrol.com2026-03-18 → 2026-03-27 · 3 obs
● 2026-03-18 04:25:16
● 2026-03-27 00:09:52
●NSns16.domaincontrol.com2026-03-18 → 2026-03-27 · 3 obs
● 2026-03-18 04:25:16
● 2026-03-27 00:09:52
○NSns39.domaincontrol.com2015-07-07 → 2019-03-23 · 4 obs
● 2019-03-23 08:59:24
○ 2026-03-18 04:25:16
○ 2026-03-27 00:09:52
○NSns40.domaincontrol.com2015-07-07 → 2019-03-23 · 4 obs
● 2019-03-23 08:59:24
○ 2026-03-18 04:25:16
○ 2026-03-27 00:09:52
●MX21daycourse-com.mail.protection.outlook.com2026-03-18 → 2026-03-27 · 3 obs
● 2026-03-18 04:25:16
● 2026-03-27 00:09:52
○MXmailstore1.secureserver.net2015-07-07 → 2019-03-23 · 4 obs
● 2019-03-23 08:59:24
○ 2026-03-18 04:25:16
○ 2026-03-27 00:09:52
○MXsmtp.secureserver.net2015-07-07 → 2019-03-23 · 4 obs
● 2019-03-23 08:59:24
○ 2026-03-18 04:25:16
○ 2026-03-27 00:09:52
●A162.159.142.172026-03-18 → 2026-03-27 · 3 obs
● 2026-03-18 04:25:16
● 2026-03-27 00:09:52
●A172.66.2.132026-03-18 → 2026-03-27 · 3 obs
● 2026-03-18 04:25:16
● 2026-03-27 00:09:52
○A184.168.221.452015-07-07 → 2019-03-23 · 4 obs
● 2019-03-23 08:59:24
○ 2026-03-18 04:25:16
○ 2026-03-27 00:09:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net... | - |
| 21daycourse.com | ns15.domaincontrol.com, ns16.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.107.8
NS records: ns15.domaincontrol.com, ns16.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21daycourse.com (unsigned zone)
⏱️ Timing
Total: 94ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 162.159.142.17, 172.66.2.13 |
| NS | 2 | ns15.domaincontrol.com, ns16.domaincontrol.com |
| MX | 1 | 21daycourse-com.mail.protection.outlook. |
| TXT | 4 | NETORGFT19463103.onmicrosoft.com, zoho-verification=zb73365899.zmverify.zo... |
| SOA | 1 | ns15.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns15.domaincontrol.com, ns15.domaincontrol.com, ns16.domaincontrol.com...)
Analysis
IP Addresses
21daycourse.com points to two IP numbers: 162.159.142.17 and 172.66.2.13.
Other host names such as dbtworkshops.com, thebritishenglishpodcast.com, myfedtrainer.com, xpstartup.com and mykenz.net share IPs with 21daycourse.com.
Name Servers
21daycourse.com is delegated to two name servers: ns15.domaincontrol.com and ns16.domaincontrol.com.
21daycourse.com shares the same name server setup as traneylaw.com, snackrich.com, radioilucan.com, scuddle.com and okautoservice.de.
Host names with two IP numbers: ns15.domaincontrol.com points to: 2603:5:21b0::8 and 97.74.107.8; ns16.domaincontrol.com points to: 2603:5:22b0::8 and 173.201.75.8.
Mail Servers
21daycourse.com is handled by a single mail server, 21daycourse-com.mail.protection.outlook.com.
Host name 21daycourse-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c92c::1, 2a01:111:f403:c92c::4, 2a01:111:f403:f804::3, 2a01:111:f403:f902::1, 52.101.10.8, 52.101.10.14, 52.101.11.3 and 52.101.194.17.