booktocourses.com - robtex.com
booktocourses.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 | ||||||
Subdomains
mail.booktocourses.com |
Same first word
booktocourses.com |
DNS History
9 records (9 active, 0 former)
●NSdns1.namecheaphosting.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●NSdns2.namecheaphosting.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXalt1.aspmx.l.google.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXalt2.aspmx.l.google.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXalt3.aspmx.l.google.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXalt4.aspmx.l.google.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXaspmx.l.google.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●MXmail.booktocourses.com2016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
●A198.54.116.502016-12-20 → 2026-03-23 · 2 obs
● 2026-03-23 02:57:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| booktocourses.com | dns1.namecheaphosting.com, dns2.namecheaphosting.com | 4 records |
✅ Authoritative Response
Server:156.154.133.200
NS records: dns1.namecheaphosting.com, dns2.namecheaphosting.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for booktocourses.com (unsigned zone)
⏱️ Timing
Total: 219ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 198.54.116.50 |
| NS | 2 | dns1.namecheaphosting.com, dns2.namecheaphosting.com |
| MX | 6 | mail.booktocourses.com (pri: 0), aspmx.l.google.com (pri: 1)... |
| TXT | 1 | google-site-verification=me9wsBO3DZRT6RQ |
| SOA | 1 | dns1.namecheaphosting.com cpanel.tech.na |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (dns1.namecheaphosting.com, dns1.namecheaphosting.com, dns2.namecheaphosting.com...)
Analysis
Hierarchy
The parent of mail.booktocourses.com is booktocourses.com.
IP Addresses
booktocourses.com points to IP number: 198.54.116.50.
Other host names such as mike-newton.com, mail.booktocourses.com, viraproperty.com, mail.sosomodels.com and thesandun.com share IPs with booktocourses.com.
Name Servers
booktocourses.com is delegated to two name servers: dns1.namecheaphosting.com and dns2.namecheaphosting.com.
booktocourses.com shares the same name server setup as lienroyal.com, biggamefishinghawaii.com, ipmp.edu.gh, meinstrom24.com and gravtechnology.com.
booktocourses.com partially shares its name servers with other domains, for example shiftsmanager.com, oneplus.fr and 418194.com.
Host names with two IP numbers: dns1.namecheaphosting.com points to: 2610:a1:1024::200 and 156.154.132.200; dns2.namecheaphosting.com points to: 2610:a1:1025::200 and 156.154.133.200.
Mail Servers
booktocourses.com is handled by six mail servers: mail.booktocourses.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
booktocourses.com shares at least partially some mail servers with other domains, including ns500765.ns500734.ns500734.ns500734.ns500693.ns500693.ns500699.ns500588.ns500699.ns500699.ns500699.ns500699.ns500693.ns500699.ns500602.dtrkdll.com, kee.in, ns500734.ns500734.ns500693.ns500699.ns500693.ns500693.ns500699.ns500588.ns500693.ns500699.ns500693.ns500683.ns500612.ns500588.ns500612.ns500588.ns500110.dtrkdll.com, ns500693.ns500699.ns500699.ns500699.ns500693.ns500693.ns500693.ns500693.ns500699.ns500699.ns500588.ns500699.ns500632.ns500588.ns500588.ns500588.dtrkdll.com and ns500724.ns500737.ns500737.ns500724.ns500737.ns500737.ns500724.ns500599.ns500737.ns500724.ns500737.ns500583.ns500583.ns500583.ns500697.www.yummyflingsfinder.com.
these mail servers are often used together with aspmx2.googlemail.com, aspmx3.googlemail.com and aspmx4.googlemail.com.
Host names with two IP numbers:
Host aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27
Host alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26
Host alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26
Host alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26
Host alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27
Host names with one IP number:
Host mail.booktocourses.com points to 198.54.116.50