coursemason.com - robtex.com
coursemason.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=1774744977 | ||||||
Same first word
coursemason.com |
DNS History
11 records (10 active, 1 former)
●NSns23.domaincontrol.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●NSns24.domaincontrol.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●MXalt1.aspmx.l.google.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●MXalt2.aspmx.l.google.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●MXaspmx.l.google.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●MXaspmx2.googlemail.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●MXaspmx3.googlemail.com2015-08-22 → 2026-03-29 · 2 obs
● 2026-03-29 00:55:24
●A15.197.142.1732026-02-26 → 2026-03-29 · 3 obs
● 2026-02-26 13:19:44
● 2026-03-29 00:55:24
○A184.168.221.192015-08-22 → 2017-03-26 · 4 obs
● 2017-03-26 23:43:58
○ 2026-02-26 13:19:44
○ 2026-03-29 00:55:24
●A3.33.152.1472026-02-26 → 2026-03-29 · 3 obs
● 2026-02-26 13:19:44
● 2026-03-29 00:55:24
●A52.162.107.402026-02-26 → 2026-03-29 · 3 obs
● 2026-02-26 13:19:44
● 2026-03-29 00:55:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net, i.gtld-servers.net... | - |
| coursemason.com | ns23.domaincontrol.com, ns24.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.101.12
NS records: ns23.domaincontrol.com, ns24.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursemason.com (unsigned zone)
⏱️ Timing
Total: 359ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 15.197.142.173, 3.33.152.147... |
| NS | 2 | ns23.domaincontrol.com, ns24.domaincontrol.com |
| MX | 5 | alt1.aspmx.l.google.com (pri: 20), alt2.aspmx.l.google.com (pri: 30)... |
| TXT | 1 | google-site-verification=pNeB0gWExRvgs0I |
| SOA | 1 | ns23.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns23.domaincontrol.com, ns23.domaincontrol.com, ns24.domaincontrol.com...)
Analysis
IP Addresses
coursemason.com points to three IPs: 3.33.152.147, 15.197.142.173 and 52.162.107.40.
Other host names such as pervpleasures.com, scelicpa.com, campolab.com, albertallenback.com and keithward.net share IPs with coursemason.com.
Name Servers
Two name servers ns23.domaincontrol.com and ns24.domaincontrol.com handle the delegation for coursemason.com.
coursemason.com shares the same name server setup as other domains, for example oracletaxforms.com, ebnds.ca, brianastlefineart.com, webspareparts.eu and allegianceimaging.com.
coursemason.com shares name servers with other domains at least partially, for instance wanbotiyu.com.
Host names with two IP numbers:
ns23.domaincontrol.com points to 2603:5:2151::c and 97.74.101.12.
ns24.domaincontrol.com points to 2603:5:2251::c and 173.201.69.12.
Mail Servers
coursemason.com is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
coursemason.com shares at least partially some mail servers with other domains, for instance ns500671.ns500754.ns500754.ns500671.ns500754.ns500671.ns500705.ns500705.ns500688.ns500678.ns500291.ns500291.ns500291.ns500131.lustychickser.com, ns500754.ns500742.ns500754.ns500742.ns500754.ns500688.ns500705.ns500649.ns500649.ns500649.ns500666.tenderladiesbz.com, mangovoice.com, traititrail.com and kvag.net.
these mail servers are often used together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers: aspmx2.googlemail.com and alt1.aspmx.l.google.com point to 2607:f8b0:4023:2801::1a and 192.178.128.27; aspmx3.googlemail.com points to 2607:f8b0:4023:1015::1b and 172.253.135.26; aspmx.l.google.com points to 2607:f8b0:4004:c23::1b and 172.253.63.26; alt2.aspmx.l.google.com points to 2607:f8b0:4023:1015::1a and 172.253.135.27. Host names that point to 2607:f8b0:4023:2801::1a: aspmx2.googlemail.com and alt1.aspmx.l.google.com. Host names that point to 192.178.128.27: aspmx2.googlemail.com and alt1.aspmx.l.google.com.