probooks.com - robtex.com
probooks.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
www.probooks.com |
Same first word
Similar names
DNS History
24 records (11 active, 13 former)
○NSns1.voodoo.com2015-08-06 → 2016-06-20 · 4 obs
● 2016-06-20 17:34:58
○ 2017-02-05 23:11:18
○ 2026-02-28 13:37:10
○NSns1psw.name.com2017-02-05 → 2017-02-05 · 4 obs
● 2017-02-05 23:11:18
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○NSns2.voodoo.com2015-08-06 → 2016-06-20 · 4 obs
● 2016-06-20 17:34:58
○ 2017-02-05 23:11:18
○ 2026-02-28 13:37:10
●NSns25.domaincontrol.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
●NSns26.domaincontrol.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
○NSns2nsy.name.com2017-02-05 → 2017-02-05 · 4 obs
● 2017-02-05 23:11:18
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○NSns3gnv.name.com2017-02-05 → 2017-02-05 · 4 obs
● 2017-02-05 23:11:18
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○NSns4gvx.name.com2017-02-05 → 2017-02-05 · 4 obs
● 2017-02-05 23:11:18
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
●MXalt1.aspmx.l.google.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
●MXalt2.aspmx.l.google.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
●MXalt3.aspmx.l.google.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
●MXalt4.aspmx.l.google.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
●MXaspmx.l.google.com2026-02-20 → 2026-02-28 · 3 obs
● 2026-02-20 21:02:08
● 2026-02-28 13:37:10
○MXmx3.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○MXmx4.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○MXmx5.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○MXmx6.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○MXmx7.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○MXmx8.name.com2017-02-05 → 2017-02-05 · 3 obs
○ 2026-02-20 21:02:08
○ 2026-02-28 13:37:10
○A192.64.147.1902015-08-06 → 2016-06-20 · 4 obs
● 2016-06-20 17:34:58
○ 2017-02-05 23:11:18
○ 2026-02-28 13:37:10
●A216.239.32.212017-02-05 → 2026-02-28 · 3 obs
● 2017-02-05 23:11:18
● 2026-02-28 13:37:10
●A216.239.34.212017-02-05 → 2026-02-28 · 3 obs
● 2017-02-05 23:11:18
● 2026-02-28 13:37:10
●A216.239.36.212017-02-05 → 2026-02-28 · 3 obs
● 2017-02-05 23:11:18
● 2026-02-28 13:37:10
●A216.239.38.212017-02-05 → 2026-02-28 · 3 obs
● 2017-02-05 23:11:18
● 2026-02-28 13:37:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| probooks.com | ns25.domaincontrol.com, ns26.domaincontrol.com | 4 records |
✅ Authoritative Response
Server: 173.201.70.13
NS records: ns25.domaincontrol.com, ns26.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for probooks.com (unsigned zone)
⏱️ Timing
Total: 221ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 216.239.34.21, 216.239.36.21... |
| NS | 2 | ns25.domaincontrol.com, ns26.domaincontrol.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 5 | firebase=popping-fire-5430, globalsign-domain-verification=hL1YyaIXz... |
| SOA | 1 | ns25.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns25.domaincontrol.com, ns25.domaincontrol.com, ns26.domaincontrol.com...)
Analysis
Hierarchy
The parent of www.probooks.com is probooks.com.
IP Addresses
probooks.com resolves to four IP numbers: 216.239.32.21, 216.239.34.21, 216.239.36.21 and 216.239.38.21.
Other host names such as melonpost.com, mrcsol.net, theproperbrewing.com, 8bit.is and karnani.co share IPs with probooks.com.
Name Servers
probooks.com is delegated to two name servers: ns25.domaincontrol.com and ns26.domaincontrol.com.
probooks.com shares the same name server setup as lacesout.org, mail69.de, royalmarine.com, portugal-today.com and garten.media.
probooks.com shares name servers with other domains at least partially, for instance googl3.org and stosur.com.
Host names with two IP numbers: ns25.domaincontrol.com points to: 2603:5:2161::d and 97.74.102.13; ns26.domaincontrol.com points to: 2603:5:2261::d and 173.201.70.13.
Mail Servers
Five mail servers handle probooks.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.
probooks.com shares at least partially some mail servers with other domains, including hpcr.jp, hmr-healthcare.com.au, todicastle.com, ns500754.ns500742.ns500731.ns500754.ns500742.ns500704.ns500705.ns500705.ns500705.ns500705.ns500705.ns500688.ns500671.ns500649.ns500649.lustychickser.com and chenpan.xyz.
these mail servers are commonly used with aspmx2.googlemail.com and aspmx3.googlemail.com.
Host names with two IP numbers:
Hostname aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.
Hostname alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.
Hostname alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.
Hostname alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.
Hostname alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.