classbook.com - dns.ninja

classbook.com

DNSSEC⚠️ Not signed
NSdns1.follett.com ⚠️ Not in zone NS records
A209.65.14.51🇺🇸 AS2386209.65.14.0/24 Prolexic Technologies, Inc.
NSdns2.follett.com ⚠️ Not in zone NS records
A209.65.14.51🇺🇸 AS2386209.65.14.0/24 Prolexic Technologies, Inc.
NSdns3.follett.com ⚠️ Not in zone NS records
A209.65.14.53🇺🇸 AS2386209.65.14.0/24 Prolexic Technologies, Inc.
NSdns4.follett.com ⚠️ Not in zone NS records
NSdns5.follett.com ⚠️ Not in zone NS records

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1786270844

Subdomains

email.classbook.com
www.classbook.com
ftp.classbook.com

Same first word

classbook.net
classbook.org
classbook.com
classbook.de
classbook.co.uk
classbook.vn
classbook.it
classbook.ie
classbook.co
classbook.us

Similar names

bookclass.com
blockasso.com

DNS History

12 records (5 active, 7 former)

20162017201820192020202120222023202420252026NSdns1.follett.comdns2.follett.comdns3.follett.comdns4.follett.comdns5.follett.comns1.logical.netns2.logical.netns3.logical.netMXmx1.smtp.exch080.serverdata.netmx2.smtp.exch080.serverdata.netA209.23.126.179209.65.14.17
●NSdns1.follett.com2016-07-11 → 2026-08-09 · 3 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2026-08-09 10:38:12
●NSdns2.follett.com2016-07-11 → 2026-08-09 · 3 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2026-08-09 10:38:12
●NSdns3.follett.com2016-07-11 → 2026-08-09 · 3 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2026-08-09 10:38:12
●NSdns4.follett.com2016-07-11 → 2026-08-09 · 3 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2026-08-09 10:38:12
●NSdns5.follett.com2016-07-11 → 2026-08-09 · 3 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2026-08-09 10:38:12
○NSns1.logical.net2015-08-14 → 2016-03-17 · 4 obs
● 2015-08-14 01:24:46
● 2016-03-17 09:16:48
○ 2016-07-11 17:19:46
○ 2026-08-09 10:38:12
○NSns2.logical.net2015-08-14 → 2016-03-17 · 4 obs
● 2015-08-14 01:24:46
● 2016-03-17 09:16:48
○ 2016-07-11 17:19:46
○ 2026-08-09 10:38:12
○NSns3.logical.net2015-08-14 → 2016-03-17 · 4 obs
● 2015-08-14 01:24:46
● 2016-03-17 09:16:48
○ 2016-07-11 17:19:46
○ 2026-08-09 10:38:12
○MXmx1.smtp.exch080.serverdata.net2015-08-14 → 2026-06-21 · 6 obs
● 2015-08-14 01:24:46
● 2026-04-04 06:49:00
○ 2026-05-24 13:42:26
● 2026-06-21 02:50:24
○ 2026-07-15 17:50:30
○ 2026-08-09 10:38:12
○MXmx2.smtp.exch080.serverdata.net2015-08-14 → 2026-06-21 · 6 obs
● 2015-08-14 01:24:46
● 2026-04-04 06:49:00
○ 2026-05-24 13:42:26
● 2026-06-21 02:50:24
○ 2026-07-15 17:50:30
○ 2026-08-09 10:38:12
○A209.23.126.1792015-08-14 → 2016-03-17 · 4 obs
● 2015-08-14 01:24:46
● 2016-03-17 09:16:48
○ 2016-07-11 17:19:46
○ 2026-08-09 10:38:12
○A209.65.14.172016-07-11 → 2017-04-20 · 5 obs
○ 2016-03-17 09:16:48
● 2016-07-11 17:19:46
● 2017-04-20 01:58:42
○ 2026-07-15 17:50:30
○ 2026-08-09 10:38:12

🔍 DNS Trace

Analysis

Hierarchy

email.classbook.com, www.classbook.com and ftp.classbook.com each fall under the parent domain classbook.com.

Name Servers

Delegation for classbook.com is to five name servers: dns1.follett.com, dns2.follett.com, dns3.follett.com and two others.

classbook.com partially shares its NS delegation with several other domains, including wneshop.com, chamberlaincollegestore.com, devryphoenixshop.com and two others.

In DNS configurations, these name servers often share authority with dns4.follett.com, dns5.follett.com, a1-227.akam.net and 5 other name servers.

dns1.follett.com, dns2.follett.com and dns3.follett.com each resolve to one IP address: dns1.follett.com and dns2.follett.com both point to 209.65.14.51, while dns3.follett.com points to 209.65.14.53.

Host names pointing to 209.65.14.51 IP addresses: dns1.follett.com and dns2.follett.com.