booktocourses.com - dns.ninja
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=1785813607 | ||||||
Subdomains
mail.booktocourses.com |
Same first word
booktocourses.com |
DNS History
9 records (9 active, 0 former)
●NSdns1.namecheaphosting.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●NSdns2.namecheaphosting.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXalt1.aspmx.l.google.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXalt2.aspmx.l.google.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXalt3.aspmx.l.google.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXalt4.aspmx.l.google.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXaspmx.l.google.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●MXmail.booktocourses.com2016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
●A198.54.116.502016-12-20 → 2026-08-04 · 2 obs
● 2026-08-04 03:44:16
🔍 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:156.154.132.200
NS records: dns1.namecheaphosting.com, dns2.namecheaphosting.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for booktocourses.com (unsigned zone)
⏱️ Timing
Total: 206ms | 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
booktocourses.com is the parent zone for mail.booktocourses.com.
IP Addresses
booktocourses.com resolves to just one IP address, 198.54.116.50.
Two other host names, along with mike-newton.com, mail.udochiokeke.com and mail.tyhalasz.com, also share IP numbers with booktocourses.com.
Name Servers
booktocourses.com uses two name servers for its delegation: dns1.namecheaphosting.com and dns2.namecheaphosting.com.
booktocourses.com shares its NS records with other domains, for example lienroyal.com, mytexansenergy.com, thesatorilab.com and two others.
Some of booktocourses.com's name servers are also used by other domains, including shiftsmanager.com, sheglam.pk, iptvstream.xyz and oneplus.fr.
The two host names dns1.namecheaphosting.com and dns2.namecheaphosting.com each have a pair of IP addresses: dns1.namecheaphosting.com has 156.154.132.200 and 2610:a1:1024::200, and dns2.namecheaphosting.com has 156.154.133.200 and 2610:a1:1025::200.
Mail Servers
The MX records for booktocourses.com point to 6 mail servers — mail.booktocourses.com, aspmx.l.google.com, alt1.aspmx.l.google.com and 3 other.
There is at least a partial MX overlap between booktocourses.com and 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 and two others.
These mail servers frequently co-occur with the mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and two others.
Host names that have two IP addresses:
aspmx.l.google.com directs traffic to 142.250.31.26 and 2607:f8b0:4004:c19::1b.
alt1.aspmx.l.google.com directs traffic to 108.177.123.26 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1a.
Host names that point to one IP address:
mail.booktocourses.com has the IP address 198.54.116.50.