coursesaver.com - dns.ninja
coursesaver.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=1783679157 | ||||||
Same first word
coursesaver.com |
coursesaver.org |
Similar names
DNS History
12 records (11 active, 1 former)
●NSns1.dreamhost.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●NSns2.dreamhost.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●NSns3.dreamhost.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXalt1.aspmx.l.google.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXalt2.aspmx.l.google.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXaspmx.l.google.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXaspmx2.googlemail.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXaspmx3.googlemail.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXaspmx4.googlemail.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
●MXaspmx5.googlemail.com2015-06-11 → 2026-07-10 · 2 obs
● 2026-07-10 10:36:32
○A184.107.174.822015-06-11 → 2015-11-02 · 4 obs
● 2015-11-02 05:45:42
○ 2016-02-04 18:38:30
○ 2026-07-10 10:36:32
●A206.130.99.32016-02-04 → 2026-07-10 · 3 obs
● 2016-02-04 18:38:30
● 2026-07-10 10:36:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| coursesaver.com | ns1.dreamhost.com, ns2.dreamhost.com | 2 records |
✅ Authoritative Response
Server:162.159.26.14
NS records: ns1.dreamhost.com, ns2.dreamhost.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursesaver.com (unsigned zone)
⏱️ Timing
Total: 178ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 206.130.99.3 |
| NS | 3 | ns2.dreamhost.com, ns3.dreamhost.com... |
| MX | 7 | ASPMX3.GOOGLEMAIL.com (pri: 0), ASPMX5.GOOGLEMAIL.com (pri: 0)... |
| TXT | 2 | v=spf1 include:spf.mandrillapp.com ?all, google-site-verification=W8hjFaBUviTEsNy |
| SOA | 1 | ns1.dreamhost.com hostmaster.dreamhost.c |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dreamhost.com, ns2.dreamhost.com)
Analysis
IP Addresses
coursesaver.com resolves to just one IP address, 206.130.99.3.
Name Servers
coursesaver.com is delegated to three name servers: ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com.
coursesaver.com partially shares its NS delegation with several other domains, including jade.pro, mediciroasting.com, jvcanetassessors.com and two others.
ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com each resolve to a single IP address: ns1.dreamhost.com resolves to 162.159.26.14, ns2.dreamhost.com resolves to 162.159.26.81 and ns3.dreamhost.com resolves to 162.159.27.84.
Mail Servers
The MX records for coursesaver.com point to 7 mail servers — aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.
There is at least a partial MX overlap between coursesaver.com and other domains, including knuckleheads.net, toptaxconsultant.com, theradin.com and two others.
These mail servers tend to appear in combination with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 others.
Host names that have two IP addresses:
aspmx2.googlemail.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a.
aspmx4.googlemail.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1a.
aspmx5.googlemail.com points to 172.253.157.27 and 2a00:1450:400c:c23::1a.
aspmx.l.google.com points to 142.250.31.26 and 2607:f8b0:4004:c1b::1b.
alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a.
aspmx2.googlemail.com and alt1.aspmx.l.google.com are host names that each point to 108.177.123.26 IP addresses.
aspmx3.googlemail.com and alt2.aspmx.l.google.com are host names that each point to 2a00:1450:400b:c02::1a IP addresses.
aspmx3.googlemail.com and alt2.aspmx.l.google.com are host names that each point to 172.253.116.26 IP addresses.