null.fastmail.com - dns.ninja

null.fastmail.com

DNSSEC⚠️ Not signed
A103.168.172.37🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRwww.messagingengine.com
A103.168.172.52🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
MXin1-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
MXin2-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
TXTv=spf1 include:spf.messagingengine.com ~all

fastmail.com

DNSSEC⚠️ Not signed
A103.168.172.65🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
NSfmns1.messagingengine.com ⭐
NSfmns2.messagingengine.com
MXin1-smtp.messagingengine.com ⭐
MXin2-smtp.messagingengine.com(20)
TXTv=spf1 include:spf.messagingengine.com ~all
SOAfmns1.messagingengine.compostmaster@messagingengine.com 2026-07-07 #0
WOT: SAFE (88/100)
rank #15532 globally
rank #7584 in the tld
🔒 HSTS Preload
WOT: SAFE (92/100)
📈 Tranco rank: #12,338

Same first word

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null.ag
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null.blogspot.com.br
null.omg.lol
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null.servequake.com
null.care
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null.pe
null.blogspot.ug
null.mx
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null.place
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null.s3.eu-central-1.amazonaws.com
null.sg
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null.codes
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null.jpn.com
null.bplaced.de
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null.us.com
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null.ric.jelastic.vps-host.net
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null.blogspot.pt
null.dyndns.org
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null.s3-website.ap-south-1.amazonaws.com
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null.co.za
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DNS History

4 records (4 active, 0 former)

MXin1-smtp.messagingengine.comin2-smtp.messagingengine.comA103.168.172.37103.168.172.52
●MXin1-smtp.messagingengine.com2026-07-06 → 2026-07-12 · 2 obs
● 2026-07-06 02:38:08
● 2026-07-12 15:14:38
●MXin2-smtp.messagingengine.com2026-07-06 → 2026-07-12 · 2 obs
● 2026-07-06 02:38:08
● 2026-07-12 15:14:38
●A103.168.172.372026-07-06 → 2026-07-12 · 2 obs
● 2026-07-06 02:38:08
● 2026-07-12 15:14:38
●A103.168.172.522026-07-06 → 2026-07-12 · 2 obs
● 2026-07-06 02:38:08
● 2026-07-12 15:14:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net...-
fastmail.comfmns1.messagingengine.com, fmns2.messagingengine.com2 records

✅ Authoritative Response

Server:162.159.25.114

NS records: fmns1.messagingengine.com, fmns2.messagingengine.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fastmail.com (unsigned zone)

⏱️ Timing

Total: 283ms | Queries: -

📄 Records

TypeCountSample Data
A2103.168.172.37, 103.168.172.52
MX2in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)
TXT1v=spf1 include:spf.messagingengine.com ~

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (fmns1.messagingengine.com, fmns2.messagingengine.com)

Analysis

IP Addresses

null.fastmail.com points to the IP addresses 103.168.172.37 and 103.168.172.52

comeunitynow.org, peabody.me, mothdust.com plus two other host names have IP numbers in common with null.fastmail.com.

Mail Servers

null.fastmail.com uses two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

The mail server setup of null.fastmail.com matches that of other domains such as yachtcharterturkey.net, mailtome.biz, jxlee.com and two others.

Hosts with 8 IP addresses each:

in1-smtp.messagingengine.com resolves to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 other IP addresses.

Host names with four IP addresses:

in2-smtp.messagingengine.com directs to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.