courses-plus.com - robtex.com
courses-plus.com
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=1777436401 | ||||||
Same first word
courses-plus.com |
DNS History
8 records (5 active, 3 former)
●NSns-1134.awsdns-13.org2026-02-19 → 2026-04-29 · 3 obs
● 2026-02-19 07:29:00
● 2026-04-29 04:44:02
●NSns-2040.awsdns-63.co.uk2026-02-19 → 2026-04-29 · 3 obs
● 2026-02-19 07:29:00
● 2026-04-29 04:44:02
●NSns-37.awsdns-04.com2026-02-19 → 2026-04-29 · 3 obs
● 2026-02-19 07:29:00
● 2026-04-29 04:44:02
●NSns-914.awsdns-50.net2026-02-19 → 2026-04-29 · 3 obs
● 2026-02-19 07:29:00
● 2026-04-29 04:44:02
○NSns01.domaincontrol.com2020-01-10 → 2020-01-10 · 3 obs
○ 2026-02-19 07:29:00
○ 2026-04-29 04:44:02
○NSns02.domaincontrol.com2020-01-10 → 2020-01-10 · 3 obs
○ 2026-02-19 07:29:00
○ 2026-04-29 04:44:02
●A23.227.38.652026-02-19 → 2026-04-29 · 3 obs
● 2026-02-19 07:29:00
● 2026-04-29 04:44:02
○A50.63.202.912020-01-10 → 2020-01-10 · 3 obs
○ 2026-02-19 07:29:00
○ 2026-04-29 04:44:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net... | - |
| courses-plus.com | ns-37.awsdns-04.com, ns-914.awsdns-50.net, ns-1134.awsdns-13.org, ns-2040.awsdns-63.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.199.248
NS records: ns-37.awsdns-04.com, ns-914.awsdns-50.net, ns-1134.awsdns-13.org, ns-2040.awsdns-63.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courses-plus.com (unsigned zone)
⏱️ Timing
Total: 241ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.227.38.65 |
| NS | 4 | ns-1134.awsdns-13.org, ns-2040.awsdns-63.co.uk... |
| TXT | 1 | google-site-verification=QFMloyvviFrsNgn |
| SOA | 1 | ns-37.awsdns-04.com awsdns-hostmaster.am |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-37.awsdns-04.com, ns-37.awsdns-04.com)
Analysis
IP Addresses
courses-plus.com resolves to a single IP address: 23.227.38.65.
Other host names including babypuur.nl, stiiizy.com, www.wearme.com.ua, tiffanylane.net and skinkit.pk share IP numbers with courses-plus.com.
Name Servers
courses-plus.com is delegated to four name servers: ns-37.awsdns-04.com, ns-914.awsdns-50.net, ns-1134.awsdns-13.org and ns-2040.awsdns-63.co.uk.
courses-plus.com at least partially shares name servers with other domains, including wimdu.com, esta-usavisit.com, d7mk3516ixkbd.cloudfront.net, feelsensing.com and asreader.jp.
these name servers are commonly used together with ns-488.awsdns-61.com, ns-782.awsdns-33.net and ns-1851.awsdns-39.co.uk.
Hosts with two IP numbers:
Host ns-37.awsdns-04.com points to 2600:9000:5300:2500::1 and 205.251.192.37
Host ns-914.awsdns-50.net points to 2600:9000:5303:9200::1 and 205.251.195.146
Host ns-1134.awsdns-13.org points to 2600:9000:5304:6e00::1 and 205.251.196.110
Host ns-2040.awsdns-63.co.uk points to 2600:9000:5307:f800::1 and 205.251.199.248