rtcourses.com - dns.ninja
rtcourses.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.33.251.168🇺🇸 Amazon3.33.240.0/20 | ||||||
| PTR | aec037177372cc6cd.awsglobalaccelerator.com | ||||||
| A | 15.197.225.128🇺🇸 Amazon15.197.224.0/20 | ||||||
| NS | ns21.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2141::b🇺🇸 GODADDY-DNS2603:5:2140::/44 | ||||||
| PTR | ns21.domaincontrol.com | ||||||
| A | 97.74.100.11🇺🇸 GODADDY-DNS97.74.100.0/23 | ||||||
| PTR | ns21.domaincontrol.com | ||||||
| NS | ns22.domaincontrol.com | ||||||
| A | 2603:5:2241::b🇺🇸 GODADDY-DNS2603:5:2240::/44 | ||||||
| PTR | ns22.domaincontrol.com | ||||||
| A | 173.201.68.11🇺🇸 GODADDY-DNS173.201.68.0/23 | ||||||
| PTR | ns22.domaincontrol.com | ||||||
| SOA | ns21.domaincontrol.comdns@jomax.net 2026-05-21 #0 | ||||||
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=1784238857 | ||||||
Same first word
rtcourses.com |
Similar names
truecross.com |
truscores.com |
sursector.com |
trusscore.info |
rusescort.net |
trusscore.org |
truecross.org |
trusscore.com |
sursector.ch |
trusscore.net |
ruscorset.ru |
trusscore.ca |
strcourse.com |
rusescort.com |
DNS History
20 records (4 active, 16 former)
○NSns-cloud-b1.googledomains.com2016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○NSns-cloud-b2.googledomains.com2016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○NSns-cloud-b3.googledomains.com2016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○NSns-cloud-b4.googledomains.com2016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○NSns1.yourhostingaccount.com2015-07-05 → 2015-11-21 · 4 obs
● 2015-07-05 22:18:34
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
○NSns2.yourhostingaccount.com2015-07-05 → 2015-11-21 · 4 obs
● 2015-07-05 22:18:34
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
●NSns21.domaincontrol.com2026-03-23 → 2026-07-16 · 3 obs
○ 2016-09-12 22:12:08
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
●NSns22.domaincontrol.com2026-03-23 → 2026-07-16 · 3 obs
○ 2016-09-12 22:12:08
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
○MXmx.rtcourses.com2015-07-05 → 2016-09-12 · 4 obs
● 2015-07-05 22:18:34
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
●A15.197.225.1282026-03-23 → 2026-07-16 · 3 obs
○ 2016-09-12 22:12:08
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
○A2001:4860:4802:32::152016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A2001:4860:4802:34::152016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A2001:4860:4802:36::152016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A2001:4860:4802:38::152016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A216.239.32.212016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A216.239.34.212016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A216.239.36.212016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
○A216.239.38.212016-02-22 → 2016-09-12 · 5 obs
○ 2015-11-21 04:27:02
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
● 2016-02-22 16:22:36
● 2016-09-12 22:12:08
○ 2026-03-23 14:44:50
○ 2026-07-16 22:19:30
●A3.33.251.1682026-03-23 → 2026-07-16 · 3 obs
○ 2016-09-12 22:12:08
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
● 2026-03-23 14:44:50
● 2026-07-16 22:19:30
○A66.96.163.1302015-07-05 → 2015-11-21 · 4 obs
● 2015-07-05 22:18:34
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
● 2015-11-21 04:27:02
○ 2016-02-22 16:22:36
○ 2026-07-16 22:19:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net... | - |
| rtcourses.com | ns21.domaincontrol.com, ns22.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.68.11
NS records: ns21.domaincontrol.com, ns22.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtcourses.com (unsigned zone)
⏱️ Timing
Total: 95ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.225.128, 3.33.251.168 |
| NS | 2 | ns21.domaincontrol.com, ns22.domaincontrol.com |
| SOA | 1 | ns21.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns21.domaincontrol.com, ns21.domaincontrol.com, ns22.domaincontrol.com...)
Analysis
IP Addresses
rtcourses.com has two IP addresses: 3.33.251.168 and 15.197.225.128
Among the host names that share IP numbers with rtcourses.com are earthtouchgardens.com, giavento.net, avyka.ai and two others.
Name Servers
Two name servers handle the delegation for rtcourses.com: ns21.domaincontrol.com and ns22.domaincontrol.com.
rtcourses.com has the same name server delegation as a number of other domains, such as inalavie.at, tomwalker.photography, satelco.co and two more.
rtcourses.com is at least partially co-delegated on name servers with other domains, such as donttalktomeaboutheroes.com.
ns21.domaincontrol.com and ns22.domaincontrol.com both carry two IP addresses. The A records for ns21.domaincontrol.com are 97.74.100.11 and 2603:5:2141::b; the A records for ns22.domaincontrol.com are 173.201.68.11 and 2603:5:2241::b.