4course.com - dns.ninja
4course.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=1782630855 | ||||||
Same first word
4course.com |
Similar names
course4.com |
source4.me |
score4u.de |
4source.com |
source4.de |
score4u.com |
4uscore.com |
cores4u.com |
4source.de |
source4.com |
DNS History
8 records (8 active, 0 former)
●NSa.dns.hostway.net2015-06-28 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●NSb.dns.hostway.net2015-06-28 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●MXalt1.aspmx.l.google.com2026-03-17 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●MXalt2.aspmx.l.google.com2026-03-17 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●MXaspmx.l.google.com2026-03-17 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●MXaspmx2.googlemail.com2026-03-17 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●MXaspmx3.googlemail.com2026-03-17 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
●A216.185.130.912015-06-28 → 2026-06-28 · 2 obs
● 2026-06-28 07:33:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 4course.com | a.dns.hostway.net, b.dns.hostway.net | - |
✅ Authoritative Response
Server:64.41.114.10
NS records: a.dns.hostway.net, b.dns.hostway.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4course.com (unsigned zone)
⏱️ Timing
Total: 3535ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.185.130.91 |
| NS | 2 | b.dns.hostway.net, a.dns.hostway.net |
| MX | 5 | ASPMX2.GOOGLEMAIL.com (pri: 10), ALT1.ASPMX.L.GOOGLE.com (pri: 5)... |
| SOA | 1 | a.dns.hostway.net hostmaster.siteprotect |
Analysis
IP Addresses
4course.com has exactly one IP address — 216.185.130.91.
vellm.com, boliantzustorit.com, gradyman.com plus two other host names have IP numbers in common with 4course.com.
Name Servers
4course.com is served by two delegated name servers, a.dns.hostway.net and b.dns.hostway.net.
The name server configuration of 4course.com is shared with other domains, for instance aertours.com, puremoxie.net, silai.net and two others.
4course.com partially shares its NS delegation with several other domains, including 231.113.66.in-addr.arpa, legalawareness.net, sequelinc.comcastbiz.net and two others.
The name servers ns.siteprotect.com, ns2.siteprotect.com, adns.cs.siteprotect.com and bdns.cs.siteprotect.com are often found in use alongside these name servers.
a.dns.hostway.net resolves to 64.41.112.10. b.dns.hostway.net resolves to 64.41.114.10. Both host names point to a single IP number.
Mail Servers
Mail for 4course.com is handled by five mail servers, namely aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
At least some of the mail servers used by 4course.com are shared with other domains: ns500768.ns500698.ns500758.ns500758.ns500698.ns500698.ns500735.ns500576.ns500698.ns500708.ns500619.ns500619.ns500652.ns500576.trackreceptor.com, ns500758.ns500759.ns500758.ns500698.ns500698.ns500735.ns500735.ns500698.ns500735.ns500576.ns500576.ns500619.ns500652.ns500619.trackreceptor.com, ns500728.ns500683.ns500683.ns500588.ns500588.ns500588.ns500588.dtrkdll.com and two others among them.
These mail servers are often deployed together with alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.
Host names pointing to two IP addresses:
aspmx2.googlemail.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1a.
aspmx3.googlemail.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.
aspmx.l.google.com maps to two IP addresses — 142.251.16.27 and 2607:f8b0:4004:c0b::1a.
alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.
These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 2a00:1450:400b:c02::1a IP addresses.
These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 172.253.116.27 IP addresses.