onlineprepcourses.com - dns.ninja
onlineprepcourses.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=1786097954 | ||||||
Subdomains
mx.onlineprepcourses.com |
Same first word
onlineprepcourses.com |
DNS History
9 records (4 active, 5 former)
●NSns1.fatcow.com2026-03-02 → 2026-08-07 · 3 obs
● 2026-03-02 12:26:56
● 2026-08-07 10:28:28
○NSns19.domaincontrol.com2016-12-18 → 2018-07-16 · 4 obs
● 2018-07-16 15:12:56
○ 2026-03-02 12:26:56
○ 2026-08-07 10:28:28
●NSns2.fatcow.com2026-03-02 → 2026-08-07 · 3 obs
● 2026-03-02 12:26:56
● 2026-08-07 10:28:28
○NSns20.domaincontrol.com2016-12-18 → 2018-07-16 · 4 obs
● 2018-07-16 15:12:56
○ 2026-03-02 12:26:56
○ 2026-08-07 10:28:28
○MXmailstore1.secureserver.net2016-12-18 → 2018-07-16 · 4 obs
● 2018-07-16 15:12:56
○ 2026-03-02 12:26:56
○ 2026-08-07 10:28:28
●MXmx.onlineprepcourses.com2026-03-02 → 2026-08-07 · 3 obs
● 2026-03-02 12:26:56
● 2026-08-07 10:28:28
○MXsmtp.secureserver.net2016-12-18 → 2018-07-16 · 4 obs
● 2018-07-16 15:12:56
○ 2026-03-02 12:26:56
○ 2026-08-07 10:28:28
○A132.148.20.2282016-12-18 → 2018-07-16 · 4 obs
● 2018-07-16 15:12:56
○ 2026-03-02 12:26:56
○ 2026-08-07 10:28:28
●A65.254.248.1282026-03-02 → 2026-08-07 · 3 obs
● 2026-03-02 12:26:56
● 2026-08-07 10:28:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net... | - |
| onlineprepcourses.com | ns1.fatcow.com, ns2.fatcow.com | 2 records |
✅ Authoritative Response
Server:65.254.254.101
NS records: ns1.fatcow.com, ns2.fatcow.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for onlineprepcourses.com (unsigned zone)
⏱️ Timing
Total: 241ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 65.254.248.128 |
| NS | 2 | ns1.fatcow.com, ns2.fatcow.com |
| MX | 1 | mx.onlineprepcourses.com (pri: 30) |
| TXT | 1 | v=spf1 ip4:38.113.1.0/24 ip4:38.113.20.0 |
| SOA | 1 | ns1.fatcow.com dnsadmin.fatcow.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.fatcow.com, ns2.fatcow.com)
Analysis
Hierarchy
onlineprepcourses.com is the parent zone for mx.onlineprepcourses.com.
IP Addresses
onlineprepcourses.com resolves to one IP address: 65.254.248.128.
alternaterealityfarm.com, agentron.com, mx.2get.email and two other host names share IP numbers with onlineprepcourses.com.
Name Servers
DNS delegation for onlineprepcourses.com points to two name servers: ns1.fatcow.com and ns2.fatcow.com.
onlineprepcourses.com uses the same name servers as several other domains — among them nfehr.com, websiteanchorage.com, joystickgamebar.com and two more.
onlineprepcourses.com partially shares its NS delegation with several other domains, including thenerls.com, zpcinc.com, swfireconsortium.com and two others.
These name servers regularly co-occur with the name servers ns1.yourhostingaccount.com, ns2.yourhostingaccount.com and ns3.fatcow.com.
ns1.fatcow.com resolves to 65.254.254.100. ns2.fatcow.com resolves to 65.254.254.101. Both host names point to a single IP number.
Mail Servers
Mail for onlineprepcourses.com is handled by a single mail server, mx.onlineprepcourses.com.
mx.onlineprepcourses.com resolves to 6 IP addresses — 65.254.254.50, 65.254.254.51, 65.254.254.52 and 3 others.