course2go.com - robtex.com
course2go.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.213.45🇺🇸 Amazon13.248.208.0/20 | ||||||
| PTR | a67c48129651a0940.awsglobalaccelerator.com | ||||||
| A | 76.223.67.189🇺🇸 Amazon76.223.64.0/20 | ||||||
| NS | ns37.domaincontrol.com ⭐ | ||||||
| A | 2603:5:21c1::13🇺🇸 GODADDY-DNS2603:5:21c0::/44 | ||||||
| PTR | ns37.domaincontrol.com | ||||||
| A | 97.74.108.19🇺🇸 GODADDY-DNS97.74.108.0/23 | ||||||
| PTR | ns37.domaincontrol.com | ||||||
| NS | ns38.domaincontrol.com | ||||||
| A | 2603:5:22c1::13🇺🇸 GODADDY-DNS2603:5:22c0::/44 | ||||||
| PTR | ns38.domaincontrol.com | ||||||
| A | 173.201.76.19🇺🇸 GODADDY-DNS173.201.76.0/23 | ||||||
| PTR | ns38.domaincontrol.com | ||||||
| SOA | ns37.domaincontrol.comdns@jomax.net 2026-02-09 #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=1776202047 | ||||||
Same first word
course2go.com |
DNS History
19 records (4 active, 15 former)
○NSamy.ns.cloudflare.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○NSdion.ns.cloudflare.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○NSkai.ns.cloudflare.com2015-12-07 → 2015-12-07 · 4 obs
● 2015-12-07 14:39:36
○ 2016-09-17 09:02:18
○ 2026-04-14 21:54:10
●NSns37.domaincontrol.com2026-03-19 → 2026-04-14 · 3 obs
● 2026-03-19 09:47:26
● 2026-04-14 21:54:10
●NSns38.domaincontrol.com2026-03-19 → 2026-04-14 · 3 obs
● 2026-03-19 09:47:26
● 2026-04-14 21:54:10
○NSrita.ns.cloudflare.com2015-12-07 → 2015-12-07 · 4 obs
● 2015-12-07 14:39:36
○ 2016-09-17 09:02:18
○ 2026-04-14 21:54:10
○MXalt1.aspmx.l.google.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXalt2.aspmx.l.google.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXaspmx.l.google.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXaspmx2.googlemail.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXaspmx3.googlemail.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXaspmx4.googlemail.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○MXaspmx5.googlemail.com2015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
○A104.31.82.912015-12-07 → 2015-12-07 · 4 obs
● 2015-12-07 14:39:36
○ 2016-09-17 09:02:18
○ 2026-04-14 21:54:10
○A104.31.83.912015-12-07 → 2015-12-07 · 4 obs
● 2015-12-07 14:39:36
○ 2016-09-17 09:02:18
○ 2026-04-14 21:54:10
●A13.248.213.452026-03-19 → 2026-04-14 · 3 obs
● 2026-03-19 09:47:26
● 2026-04-14 21:54:10
○A23.21.224.2182015-08-02 → 2015-08-02 · 3 obs
○ 2017-05-16 06:47:48
○ 2026-04-14 21:54:10
○A23.23.78.1282015-08-02 → 2015-08-02 · 3 obs
○ 2015-12-07 14:39:36
○ 2026-04-14 21:54:10
●A76.223.67.1892026-03-19 → 2026-04-14 · 3 obs
● 2026-03-19 09:47:26
● 2026-04-14 21:54:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| course2go.com | ns37.domaincontrol.com, ns38.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.108.19
NS records: ns37.domaincontrol.com, ns38.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for course2go.com (unsigned zone)
⏱️ Timing
Total: 117ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.67.189, 13.248.213.45 |
| NS | 2 | ns37.domaincontrol.com, ns38.domaincontrol.com |
| SOA | 1 | ns37.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns37.domaincontrol.com, ns37.domaincontrol.com, ns38.domaincontrol.com...)
Analysis
IP Addresses
course2go.com points to two IP numbers: 13.248.213.45 and 76.223.67.189.
Other host names, for instance myaztecblood.com, summitsled.com, 076138.com, kingofkindergarden.org and teeks.be share IP numbers with course2go.com.
Name Servers
course2go.com's delegation is to two name servers ns37.domaincontrol.com and ns38.domaincontrol.com.
course2go.com shares the same name server configuration as other domains, such as hattersupplyhouse.com, buyfinehomes.com, charitycharlotte.com, thebeardededitor.com and neuquen.eu.
Host names with two IP numbers: ns37.domaincontrol.com points to 2603:5:21c1::13 and 97.74.108.19; ns38.domaincontrol.com points to 2603:5:22c1::13 and 173.201.76.19