courseintros.com - robtex.com
courseintros.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=1771291435 | ||||||
Up
sendy.courseintros.com |
Same first word
courseintros.com |
DNS History
8 records (7 active, 1 former)
●NSdns1.registrar-servers.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
●NSdns2.registrar-servers.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
●MXalt1.aspmx.l.google.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
●MXalt2.aspmx.l.google.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
●MXalt3.aspmx.l.google.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
●MXaspmx.l.google.com2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
○A45.79.155.612026-02-24 → 2026-02-24 · 2 obs
○ 2026-02-24 16:58:06
●A45.79.178.1242026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 16:58:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseintros.com | dns1.registrar-servers.com, dns2.registrar-servers.com | 4 records |
✅ Authoritative Response
Server: 156.154.133.200
NS records: dns1.registrar-servers.com, dns2.registrar-servers.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseintros.com (unsigned zone)
⏱️ Timing
Total: 273ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 45.79.178.124 |
| NS | 2 | dns1.registrar-servers.com, dns2.registrar-servers.com |
| MX | 4 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | google-site-verification=AzrZEzalnrpWbHG |
| SOA | 1 | dns1.registrar-servers.com hostmaster.re |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)
AI analysis
courseintros.com is the parent of sendy.courseintros.com.
courseintros.com resolves to one IP number: 45.79.178.124.
Other host names, for instance hesweb.dev, share IP numbers with courseintros.com.
courseintros.com is delegated to two name servers dns1.registrar-servers.com and dns2.registrar-servers.com.
courseintros.com shares the same name server setup as other domains, for instance waluter.com, memorableminiatures.com, sdhealthlink.com, malamacare.com and urinalverse.com.
courseintros.com at least partially shares name servers with other domains, for instance katcharov.com, katiegard.com, greenlee.cc and nlpdev.com.
These name servers are commonly used with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.
Host names with two IP numbers:
The host name dns1.registrar-servers.com points to 2610:a1:1024::200 and 156.154.132.200; the host name dns2.registrar-servers.com points to 2610:a1:1025::200 and 156.154.133.200.
Four mail servers handle courseintros.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.
courseintros.com shares some mail servers with other domains, at least partially, for instance ns500699.ns500693.ns500693.ns500734.ns500693.ns500734.ns500734.ns500734.ns500693.ns500683.ns500693.ns500683.ns500588.dtrkdll.com, ns500758.ns500758.ns500698.ns500758.ns500736.ns500736.ns500735.ns500735.ns500698.ns500735.ns500576.ns500576.ns500686.ns500698.ns500619.ns500619.trackreceptor.com, ns500734.ns500693.ns500734.ns500693.ns500699.ns500699.ns500734.ns500693.ns500693.ns500699.ns500588.ns500699.ns500693.ns500693.ns500602.dtrkdll.com, oxford.us.com and ns500759.ns500759.ns500698.ns500735.ns500736.ns500698.ns500576.ns500686.ns500576.ns500652.ns500576.ns500652.ns500619.ns500652.tracksymphony.com.
these mail servers are often used alongside alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27; alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26; alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26; alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.