mail.calculusbook.net - robtex.com

mail.calculusbook.net

DNSSEC⚠️ Not signed
A192.252.146.28🇺🇸 ICDSoft192.252.144.0/20 SURESUPPORT LLC Waltham, MA, USA
PTRs466.sureserver.com

calculusbook.net

DNSSEC⚠️ Not signed
A192.252.146.28🇺🇸 ICDSoft192.252.144.0/20 SURESUPPORT LLC Waltham, MA, USA
NSns1.s466.sureserver.com ⭐
NSns2.s466.sureserver.com
MXmail.calculusbook.net ⭐
TXTv=spf1 a mx include:s466.smtp-spf.sureserver.com ~all
SOAns1.s466.sureserver.comhostmaster@calculusbook.net serial=1777091651

MX for

calculusbook.net

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A192.252.146.2864.14.78.39
●A192.252.146.282026-02-23 → 2026-04-25 · 3 obs
○ 2016-11-27 16:11:22
● 2026-02-23 09:40:56
● 2026-04-25 05:24:48
○A64.14.78.392015-07-21 → 2016-11-27 · 4 obs
● 2015-07-21 21:00:24
● 2016-11-27 16:11:22
○ 2026-02-23 09:40:56
○ 2026-04-25 05:24:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
netg.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...-
calculusbook.netns1.s466.sureserver.com, ns2.s466.sureserver.com-

✅ Authoritative Response

Server:192.252.147.28

NS records: ns1.s466.sureserver.com, ns2.s466.sureserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for calculusbook.net (unsigned zone)

⏱️ Timing

Total: 880ms | Queries: -

📄 Records

TypeCountSample Data
A1192.252.146.28

Analysis

Mail Server Role

mail.calculusbook.net serves as the mail server for calculusbook.net.

IP Addresses

mail.calculusbook.net points to a single IP address: 192.252.146.28.

Other host names such as bodytypetests.com, mail.lisawilkins.com, mail.nitcherbuilds.com, mail.chvad.com and hostmaster.ergo-online.net share IP numbers with mail.calculusbook.net.