1course.com - dns.ninja
1course.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 | ns09.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2180::5🇺🇸 GODADDY-DNS2603:5:2180::/44 | ||||||
| PTR | ns09.domaincontrol.com | ||||||
| A | 97.74.104.5🇺🇸 GODADDY-DNS97.74.104.0/23 | ||||||
| PTR | ns09.domaincontrol.com | ||||||
| NS | ns10.domaincontrol.com | ||||||
| A | 2603:5:2280::5🇺🇸 GODADDY-DNS2603:5:2280::/44 | ||||||
| PTR | ns10.domaincontrol.com | ||||||
| A | 173.201.72.5🇺🇸 GODADDY-DNS173.201.72.0/23 | ||||||
| PTR | ns10.domaincontrol.com | ||||||
| SOA | ns09.domaincontrol.comdns@jomax.net 2025-10-28 #1 | ||||||
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=1782393265 | ||||||
Previously MX for
1course.com |
Same first word
Similar names
DNS History
8 records (4 active, 4 former)
○NSns.inmotionhosting.com2015-06-14 → 2017-11-11 · 4 obs
● 2017-11-11 12:37:30
○ 2026-04-29 00:16:38
○ 2026-06-25 13:39:54
●NSns09.domaincontrol.com2026-04-29 → 2026-06-25 · 3 obs
● 2026-04-29 00:16:38
● 2026-06-25 13:39:54
●NSns10.domaincontrol.com2026-04-29 → 2026-06-25 · 3 obs
● 2026-04-29 00:16:38
● 2026-06-25 13:39:54
○NSns2.inmotionhosting.com2015-06-14 → 2017-11-11 · 4 obs
● 2017-11-11 12:37:30
○ 2026-04-29 00:16:38
○ 2026-06-25 13:39:54
○MX1course.com2015-06-14 → 2017-11-11 · 4 obs
● 2017-11-11 12:37:30
○ 2026-04-29 00:16:38
○ 2026-06-25 13:39:54
●A15.197.225.1282026-04-29 → 2026-06-25 · 3 obs
● 2026-04-29 00:16:38
● 2026-06-25 13:39:54
●A3.33.251.1682026-04-29 → 2026-06-25 · 3 obs
● 2026-04-29 00:16:38
● 2026-06-25 13:39:54
○A70.39.151.1692015-06-14 → 2017-11-11 · 4 obs
● 2017-11-11 12:37:30
○ 2026-04-29 00:16:38
○ 2026-06-25 13:39:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | m.gtld-servers.net, l.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net... | - |
| 1course.com | ns09.domaincontrol.com, ns10.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.104.5
NS records: ns09.domaincontrol.com, ns10.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 1course.com (unsigned zone)
⏱️ Timing
Total: 187ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.225.128, 3.33.251.168 |
| NS | 2 | ns09.domaincontrol.com, ns10.domaincontrol.com |
| SOA | 1 | ns09.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns09.domaincontrol.com, ns09.domaincontrol.com, ns10.domaincontrol.com...)
Analysis
IP Addresses
1course.com points to the IP addresses 3.33.251.168 and 15.197.225.128
Among the host names that share IP numbers with 1course.com are mjauu.com, efsmith.com, entreevents.net and two others.
Name Servers
Two name servers handle the delegation for 1course.com: ns09.domaincontrol.com and ns10.domaincontrol.com.
1course.com has the same name server delegation as a number of other domains, such as metro-marble.com, eskincaremd.com, crazyhelpful.com and two more.
1course.com is at least partially co-delegated on name servers with other domains, such as eiffel-construction.com.
ns09.domaincontrol.com and ns10.domaincontrol.com both carry two IP addresses. The A records for ns09.domaincontrol.com are 97.74.104.5 and 2603:5:2180::5; the A records for ns10.domaincontrol.com are 173.201.72.5 and 2603:5:2280::5.