firstbooks.com - robtex.com
firstbooks.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=1774689722 | ||||||
Subdomains
www.firstbooks.com |
Same first word
firstbooks.net |
firstbooks.com |
firstbooks.org |
firstbooks.ru |
Similar names
DNS History
8 records (5 active, 3 former)
○NSns1.shopfirstbooks.com2015-07-04 → 2017-04-18 · 3 obs
● 2017-04-18 17:22:48
○ 2026-03-28 09:47:16
○NSns2.shopfirstbooks.com2015-07-04 → 2017-04-18 · 3 obs
● 2017-04-18 17:22:48
○ 2026-03-28 09:47:16
●NSns31.domaincontrol.com2026-03-28 → 2026-03-28 · 2 obs
● 2026-03-28 09:47:16
●NSns32.domaincontrol.com2026-03-28 → 2026-03-28 · 2 obs
● 2026-03-28 09:47:16
●MXfirstbooks-com.mail.protection.outlook.com2015-07-04 → 2026-03-28 · 2 obs
● 2026-03-28 09:47:16
●A15.197.148.332026-03-28 → 2026-03-28 · 2 obs
● 2026-03-28 09:47:16
○A192.232.243.92015-07-04 → 2017-04-18 · 3 obs
● 2017-04-18 17:22:48
○ 2026-03-28 09:47:16
●A3.33.130.1902026-03-28 → 2026-03-28 · 2 obs
● 2026-03-28 09:47:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| firstbooks.com | ns31.domaincontrol.com, ns32.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.73.16
NS records: ns31.domaincontrol.com, ns32.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstbooks.com (unsigned zone)
⏱️ Timing
Total: 86ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.33.130.190, 15.197.148.33 |
| NS | 2 | ns31.domaincontrol.com, ns32.domaincontrol.com |
| MX | 1 | firstbooks-com.mail.protection.outlook.c |
| TXT | 1 | v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns31.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns31.domaincontrol.com, ns31.domaincontrol.com, ns32.domaincontrol.com...)
Analysis
Hierarchy
The parent of www.firstbooks.com is firstbooks.com.
IP Addresses
firstbooks.com points to two IP numbers: 3.33.130.190 and 15.197.148.33.
Other host names such as tomdemille.com, rahimclan.com, workingsection.com, sealicks.com and andrewssport.com share IPs with firstbooks.com.
Name Servers
Two name servers ns31.domaincontrol.com and ns32.domaincontrol.com handle the delegation for firstbooks.com.
firstbooks.com shares the same name server setup as other domains, for example phoenician.org, com2m.com, loelectronics.com, snapkong.com and eraldo.com.
Host names with two IP numbers:
ns31.domaincontrol.com points to 2603:5:2191::10 and 97.74.105.16.
ns32.domaincontrol.com points to 2603:5:2291::10 and 173.201.73.16.
Mail Servers
The firstbooks-com.mail.protection.outlook.com mail server handles firstbooks.com.
firstbooks-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c91d::b, 2a01:111:f403:c92c::2, 2a01:111:f403:c92c::4, 2a01:111:f403:f802::3, 40.93.192.4, 52.101.9.17, 52.101.40.2 and 52.101.194.19.