courseoptions.com - dns.ninja
courseoptions.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=1783475626 | ||||||
Same first word
courseoptions.com |
Similar names
DNS History
8 records (6 active, 2 former)
●NSns-1295.awsdns-33.org2026-07-07 → 2026-07-08 · 2 obs
● 2026-07-08 02:20:14
●NSns-1783.awsdns-30.co.uk2026-07-07 → 2026-07-08 · 2 obs
● 2026-07-08 02:20:14
●NSns-54.awsdns-06.com2026-07-07 → 2026-07-08 · 2 obs
● 2026-07-08 02:20:14
●NSns-989.awsdns-59.net2026-07-07 → 2026-07-08 · 2 obs
● 2026-07-08 02:20:14
●MXsmtp.secureserver.net2026-07-07 → 2026-07-08 · 2 obs
● 2026-07-08 02:20:14
●A13.200.227.232026-07-07 → 2026-07-08 · 3 obs
● 2026-07-07 10:05:48
● 2026-07-08 02:20:14
○A207.148.248.1432015-11-17 → 2017-12-02 · 5 obs
● 2015-11-17 11:05:36
● 2017-12-02 18:53:00
○ 2026-07-07 10:05:48
○ 2026-07-08 02:20:14
○A66.151.181.492015-06-10 → 2015-06-10 · 4 obs
● 2015-06-10 17:04:50
○ 2015-11-17 11:05:36
○ 2026-07-08 02:20:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseoptions.com | ns-54.awsdns-06.com, ns-989.awsdns-59.net, ns-1783.awsdns-30.co.uk, ns-1295.awsdns-33.org | 2 records |
✅ Authoritative Response
Server:205.251.197.15
NS records: ns-54.awsdns-06.com, ns-989.awsdns-59.net, ns-1783.awsdns-30.co.uk, ns-1295.awsdns-33.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseoptions.com (unsigned zone)
⏱️ Timing
Total: 345ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 13.200.227.23 |
| NS | 4 | ns-1295.awsdns-33.org, ns-1783.awsdns-30.co.uk... |
| MX | 1 | smtp.secureserver.net (pri: 10) |
| TXT | 2 | google-site-verification=jmWWxfgUXdcSv-D, v=spf1 include:secureserver.net -all |
| SOA | 1 | ns-54.awsdns-06.com awsdns-hostmaster.am |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-54.awsdns-06.com, ns-54.awsdns-06.com)
Analysis
IP Addresses
courseoptions.com directs to one IP number, which is 13.200.227.23.
Name Servers
The domain courseoptions.com is delegated to these four name servers: ns-54.awsdns-06.com, ns-989.awsdns-59.net, ns-1295.awsdns-33.org and ns-1783.awsdns-30.co.uk.
courseoptions.com has at least partial name server overlap with other domains, such as neverboredinc.com, d99978kffv38a.cloudfront.net, eickler.com and two others.
ns-54.awsdns-06.com, ns-989.awsdns-59.net, ns-1295.awsdns-33.org and ns-1783.awsdns-30.co.uk all point to exactly two IP numbers each: ns-54.awsdns-06.com → 205.251.192.54 and 2600:9000:5300:3600::1; ns-989.awsdns-59.net → 205.251.195.221 and 2600:9000:5303:dd00::1; ns-1295.awsdns-33.org → 205.251.197.15 and 2600:9000:5305:f00::1; ns-1783.awsdns-30.co.uk → 205.251.198.247 and 2600:9000:5306:f700::1.
Mail Servers
courseoptions.com routes its mail through a single mail server, smtp.secureserver.net.
courseoptions.com has the same mail server arrangement as a number of other domains, for example datatuning.net, mandgworld.org, egproc.org and two more.
courseoptions.com shares at least some of its mail servers with other domains — for example vrguides.com, philmarshall.co.uk, kennethbonner.com and two more.
It is common to find these mail servers paired with the mail servers mailstore1.secureserver.net.
smtp.secureserver.net points to three IP addresses: 216.69.141.71, 216.69.141.84 and 216.69.141.113.