www.pythonforbiologists.com - dns.ninja

www.pythonforbiologists.com

DNSSEC⚠️ Not signed
MXus1-smtp.messagingengine.com ⭐
A103.168.172.216🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-01.messagingengine.com
A103.168.172.217🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-02.messagingengine.com
A103.168.172.218🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-03.messagingengine.com
A103.168.172.219🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-04.messagingengine.com
A103.168.172.220🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-05.messagingengine.com
A103.168.172.221🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-06.messagingengine.com
A103.168.172.222🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-07.messagingengine.com
A103.168.172.223🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-08.messagingengine.com
MXus2-smtp.messagingengine.com(20)
A202.12.124.216FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-01.messagingengine.com
A202.12.124.217FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-02.messagingengine.com
A202.12.124.218FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-03.messagingengine.com
A202.12.124.219FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-04.messagingengine.com

pythonforbiologists.com

DNSSEC⚠️ Not signed
A2001:4b98:dc6:253::8🇫🇷 GANDI-AS-22001:4b98:dc6::/48 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net
A155.133.142.8🇫🇷 GANDI-AS-2155.133.128.0/20 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net
NSns1.messagingengine.com ⭐
NSns2.messagingengine.com
MXus1-smtp.messagingengine.com ⭐
MXus2-smtp.messagingengine.com(20)
TXT@=e190c3adca950672b583da9cd2b77a1a
TXTv=spf1 include:spf.messagingengine.com ?all
SOAns1.messagingengine.compostmaster@messagingengine.com 2026-07-05 #0

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DNS History

6 records (2 active, 4 former)

20192020202120222023202420252026NSns1.messagingengine.comMXus1-smtp.messagingengine.comus2-smtp.messagingengine.comin1-smtp.messagingengine.comin2-smtp.messagingengine.comCNAMEext-cust.squarespace.com
○NSns1.messagingengine.com2018-12-20 → 2018-12-20 · 2 obs
● 2018-12-20 12:55:16
○ 2026-07-19 20:47:34
○MXin1-smtp.messagingengine.com2026-07-19 → 2026-07-19 · 1 obs
○ 2026-07-19 20:47:34
○MXin2-smtp.messagingengine.com2026-07-19 → 2026-07-19 · 1 obs
○ 2026-07-19 20:47:34
●MXus1-smtp.messagingengine.com2026-07-19 → 2026-07-19 · 1 obs
● 2026-07-19 20:47:34
●MXus2-smtp.messagingengine.com2026-07-19 → 2026-07-19 · 1 obs
● 2026-07-19 20:47:34
○CNAMEext-cust.squarespace.com2018-12-20 → 2018-12-20 · 2 obs
● 2018-12-20 12:55:16
○ 2026-07-19 20:47:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, h.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net...-
pythonforbiologists.comns1.messagingengine.com, ns2.messagingengine.com2 records

✅ Authoritative Response

Server:162.159.24.178

NS records: ns1.messagingengine.com, ns2.messagingengine.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pythonforbiologists.com (unsigned zone)

⏱️ Timing

Total: 236ms | Queries: -

📄 Records

TypeCountSample Data
MX2us1-smtp.messagingengine.com (pri: 10), us2-smtp.messagingengine.com (pri: 20)

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.messagingengine.com, ns2.messagingengine.com)

Analysis

Mail Servers

www.pythonforbiologists.com uses two mail servers, us1-smtp.messagingengine.com and us2-smtp.messagingengine.com.

The mail server setup of www.pythonforbiologists.com matches that of other domains such as netcert.org, 151e.ai, ingby.com and two others.

Hosts with 8 IP addresses each:

us1-smtp.messagingengine.com resolves to 103.168.172.216, 103.168.172.217 and 103.168.172.218 among others, with 5 other IP addresses in total.

Host names with four IP addresses:

us2-smtp.messagingengine.com maps to the following IP addresses: 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.