coursora.com - robtex.com
coursora.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=1778727196 | ||||||
Same first word
coursora.com |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.dnsowl.com2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 02:56:12
●NSns2.dnsowl.com2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 02:56:12
●NSns3.dnsowl.com2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 02:56:12
●MXmail.wabblywabble.com2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 02:56:12
●MXmail.wallywatts.com2026-05-13 → 2026-05-14 · 2 obs
● 2026-05-14 02:56:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net... | - |
| coursora.com | ns1.dnsowl.com, ns2.dnsowl.com, ns3.dnsowl.com | 12 records |
✅ Authoritative Response
Server:162.159.26.49
NS records: ns1.dnsowl.com, ns2.dnsowl.com, ns3.dnsowl.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursora.com (unsigned zone)
⏱️ Timing
Total: 317ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns1.dnsowl.com, ns2.dnsowl.com... |
| MX | 2 | mail.wabblywabble.com (pri: 10), mail.wallywatts.com (pri: 10) |
| TXT | 1 | v=spf1 ip6:fd36:7c64:44d0::/48 -all |
| SOA | 1 | ns1.dnsowl.com hostmaster.dnsowl.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (ns1.dnsowl.com, ns1.dnsowl.com, ns1.dnsowl.com...)
Analysis
Name Servers
coursora.com is delegated to three name servers: ns1.dnsowl.com, ns2.dnsowl.com and ns3.dnsowl.com.
coursora.com at least partially shares name servers with other domains, for instance rocflix.net, fobseo.com, 24169.com, 7mt.org and huisenchina.com.
Host names with four IP numbers:
ns1.dnsowl.com points to: 2400:cb00:2049:1::a29f:1a88, 2400:cb00:2049:1::a29f:1bad, 162.159.26.136 and 162.159.27.173
ns2.dnsowl.com points to: 2400:cb00:2049:1::a29f:1a31, 2400:cb00:2049:1::a29f:1b82, 162.159.26.49 and 162.159.27.130
ns3.dnsowl.com points to: 2400:cb00:2049:1::a29f:1aea, 2400:cb00:2049:1::a29f:1b62, 162.159.26.234 and 162.159.27.98
Mail Servers
coursora.com is handled by two mail servers: mail.wabblywabble.com and mail.wallywatts.com.
coursora.com shares the same mail server setup as other domains, for instance kurstore.com, trysubj.com, acpeak.com, hudisk.com and anwarb.com.
coursora.com shares some mail servers with other domains at least partially, for example wallywatts.com.
Host names with two IP numbers:
mail.wabblywabble.com points to 142.132.166.12 and 188.166.111.252
mail.wallywatts.com points to 46.101.111.206 and 116.202.9.167