courses-u.com - robtex.com
courses-u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.70.184.38🇫🇷 GANDI-AS217.70.184.0/24 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net | ||||||
| PTR | webredir.vip.gandi.net | ||||||
| NS | ns1.gandi.net ⭐ | ||||||
| A | 2001:4b98:aaaa::2🇫🇷 GANDI-LIVEDNS2001:4b98:aaaa::/48 GANDI is an ICANN accredited registrar and Cloud services provider | ||||||
| PTR | ns-1-a.gandi.net | ||||||
| A | 173.246.100.2🇺🇸 GANDI-LIVEDNS173.246.100.0/24 Gandi LiveDNS A | ||||||
| PTR | ns-1-a.gandi.net | ||||||
| NS | ns-11-c.gandi.net | ||||||
| A | 2604:3400:aaac::c🇺🇸 GANDI-LIVEDNS2604:3400:aaac::/48 Gandi US Inc. | ||||||
| PTR | ns-11-c.gandi.net | ||||||
| A | 217.70.187.12🇫🇷 GANDI-LIVEDNS217.70.187.0/24 GANDI is an ICANN accredited registrar and Cloud services provider | ||||||
| PTR | ns-11-c.gandi.net | ||||||
| NS | ns-120-a.gandi.net | ||||||
| A | 2001:4b98:aaaa::79🇫🇷 GANDI-LIVEDNS2001:4b98:aaaa::/48 GANDI is an ICANN accredited registrar and Cloud services provider | ||||||
| PTR | ns-120-a.gandi.net | ||||||
| A | 173.246.100.121🇺🇸 GANDI-LIVEDNS173.246.100.0/24 Gandi LiveDNS A | ||||||
| PTR | ns-120-a.gandi.net | ||||||
| NS | ns-67-b.gandi.net | ||||||
| A | 2001:4b98:aaab::44🇫🇷 GANDI-LIVEDNS2001:4b98:aaab::/48 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net | ||||||
| PTR | ns-67-b.gandi.net | ||||||
| A | 213.167.230.68🇫🇷 GANDI-LIVEDNS213.167.230.0/24 GANDI is an ICANN accredited registrar and Cloud services provider | ||||||
| PTR | ns-67-b.gandi.net | ||||||
| SOA | ns1.gandi.nethostmaster@gandi.net serial=1775692800 | ||||||
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=1776128457 | ||||||
Subdomains
www.courses-u.com |
Same first word
courses-u.com |
courses-u.eu |
courses-u.fr |
DNS History
11 records (5 active, 6 former)
●NSns-11-c.gandi.net2026-02-17 → 2026-04-14 · 3 obs
● 2026-02-17 11:47:14
● 2026-04-14 01:16:48
●NSns-120-a.gandi.net2026-02-17 → 2026-04-14 · 3 obs
● 2026-02-17 11:47:14
● 2026-04-14 01:16:48
●NSns-67-b.gandi.net2026-02-17 → 2026-04-14 · 3 obs
● 2026-02-17 11:47:14
● 2026-04-14 01:16:48
○NSns0.netbenefit.co.uk2008-03-07 → 2008-03-07 · 3 obs
○ 2015-07-14 10:34:00
○ 2026-04-14 01:16:48
●NSns1.gandi.net2026-02-17 → 2026-04-14 · 3 obs
● 2026-02-17 11:47:14
● 2026-04-14 01:16:48
○NSns1.netbenefit.co.uk2008-03-07 → 2008-03-07 · 3 obs
○ 2015-07-14 10:34:00
○ 2026-04-14 01:16:48
○NSns1.rrpproxy.net2015-07-14 → 2016-07-21 · 5 obs
● 2015-07-14 10:34:00
● 2016-07-21 16:39:08
○ 2026-02-17 11:47:14
○ 2026-04-14 01:16:48
○NSns2.rrpproxy.net2015-07-14 → 2016-07-21 · 5 obs
● 2015-07-14 10:34:00
● 2016-07-21 16:39:08
○ 2026-02-17 11:47:14
○ 2026-04-14 01:16:48
○NSns3.rrpproxy.net2015-07-14 → 2016-07-21 · 5 obs
● 2015-07-14 10:34:00
● 2016-07-21 16:39:08
○ 2026-02-17 11:47:14
○ 2026-04-14 01:16:48
○A212.53.65.862008-03-07 → 2016-07-21 · 4 obs
● 2016-07-21 16:39:08
○ 2026-02-17 11:47:14
○ 2026-04-14 01:16:48
●A217.70.184.382026-02-17 → 2026-04-14 · 3 obs
● 2026-02-17 11:47:14
● 2026-04-14 01:16:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, g.gtld-servers.net, m.gtld-servers.net, h.gtld-servers.net... | - |
| courses-u.com | ns-120-a.gandi.net, ns-67-b.gandi.net, ns-11-c.gandi.net | - |
✅ Authoritative Response
Server:173.246.100.121
NS records: ns-120-a.gandi.net, ns-67-b.gandi.net, ns-11-c.gandi.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courses-u.com (unsigned zone)
⏱️ Timing
Total: 749ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.70.184.38 |
| NS | 3 | ns-120-a.gandi.net, ns-67-b.gandi.net... |
| SOA | 1 | ns1.gandi.net hostmaster.gandi.net |
Analysis
Hierarchy
courses-u.com is parent of www.courses-u.com.
IP Addresses
courses-u.com points to a single IP: 217.70.184.38.
Other host names, for instance nbunce.com, nrjregies.fr, enparler.com, gammaaudit.pro and ochsnersport.sk share IP numbers with courses-u.com.
Name Servers
courses-u.com is delegated to four name servers: ns-11-c.gandi.net, ns-120-a.gandi.net, ns-67-b.gandi.net and ns1.gandi.net.
courses-u.com at least partially shares its name servers with other domains, for instance buyme.be, ch-arras.fr, smartystore.fr, drasa.eu and estimmo.fr.
These name servers are often used together with the name servers ns-76-c.gandi.net.
Host names with two IPs: ns-11-c.gandi.net points to 2604:3400:aaac::c and 217.70.187.12; ns-120-a.gandi.net points to 2001:4b98:aaaa::79 and 173.246.100.121; ns-67-b.gandi.net points to 2001:4b98:aaab::44 and 213.167.230.68; ns1.gandi.net points to 2001:4b98:aaaa::2 and 173.246.100.2.