123course.com - dns.ninja
123course.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 | ns71.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2194::2e🇺🇸 GODADDY-DNS2603:5:2190::/44 | ||||||
| PTR | ns71.domaincontrol.com | ||||||
| A | 97.74.105.46🇺🇸 GODADDY-DNS97.74.104.0/23 | ||||||
| PTR | ns71.domaincontrol.com | ||||||
| NS | ns72.domaincontrol.com | ||||||
| A | 2603:5:2294::2e🇺🇸 GODADDY-DNS2603:5:2290::/44 | ||||||
| PTR | ns72.domaincontrol.com | ||||||
| A | 173.201.73.46🇺🇸 GODADDY-DNS173.201.72.0/23 | ||||||
| PTR | ns72.domaincontrol.com | ||||||
| SOA | ns71.domaincontrol.comdns@jomax.net 2026-04-14 #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=1786605744 | ||||||
Same first word
123course.net |
123course.com |
Similar names
DNS History
12 records (4 active, 8 former)
○NSns1.sedoparking.com2015-08-12 → 2017-02-11 · 4 obs
● 2017-02-11 16:18:36
○ 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
○NSns1.uniregistrymarket.link2018-11-25 → 2018-11-25 · 3 obs
● 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
○NSns2.sedoparking.com2015-08-12 → 2017-02-11 · 4 obs
● 2017-02-11 16:18:36
○ 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
○NSns2.uniregistrymarket.link2018-11-25 → 2018-11-25 · 3 obs
● 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
●NSns71.domaincontrol.com2026-08-13 → 2026-08-13 · 2 obs
● 2026-08-13 07:40:16
●NSns72.domaincontrol.com2026-08-13 → 2026-08-13 · 2 obs
● 2026-08-13 07:40:16
○MXlocalhost2017-02-11 → 2017-02-11 · 4 obs
● 2017-02-11 16:18:36
○ 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
○MXmail.nickstel.com2015-08-12 → 2016-06-20 · 4 obs
● 2016-06-20 09:06:54
○ 2017-02-11 16:18:36
○ 2026-08-13 07:40:16
●A15.197.225.1282026-08-13 → 2026-08-13 · 2 obs
● 2026-08-13 07:40:16
●A3.33.251.1682026-08-13 → 2026-08-13 · 2 obs
● 2026-08-13 07:40:16
○A69.172.201.1532018-11-25 → 2018-11-25 · 3 obs
● 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
○A72.52.4.1212015-08-12 → 2017-02-11 · 4 obs
● 2017-02-11 16:18:36
○ 2018-11-25 23:19:00
○ 2026-08-13 07:40:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net... | - |
| 123course.com | ns71.domaincontrol.com, ns72.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.73.46
NS records: ns71.domaincontrol.com, ns72.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 123course.com (unsigned zone)
⏱️ Timing
Total: 235ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.225.128, 3.33.251.168 |
| NS | 2 | ns71.domaincontrol.com, ns72.domaincontrol.com |
| SOA | 1 | ns71.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns71.domaincontrol.com, ns71.domaincontrol.com, ns72.domaincontrol.com...)
Analysis
IP Addresses
123course.com resolves to the IP addresses 3.33.251.168 and 15.197.225.128
nabrawind.info, calpolytech.org, fishbucklake.ca and two other host names share IP numbers with 123course.com.
Name Servers
DNS delegation for 123course.com points to two name servers: ns71.domaincontrol.com and ns72.domaincontrol.com.
123course.com uses the same name servers as several other domains — among them coutts.tv, wepo.eu, relotorva.com and two more.
ns71.domaincontrol.com directs to 97.74.105.46 and 2603:5:2194::2e. ns72.domaincontrol.com directs to 173.201.73.46 and 2603:5:2294::2e. Each host name carries two IP addresses.