4sw.org - robtex.com

4sw.org

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
NSns1.messagingengine.com ⭐
A162.159.24.178Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.messagingengine.com
NSns2.messagingengine.com
A162.159.25.191Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.messagingengine.com
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
SOAns1.messagingengine.compostmaster@messagingengine.com 2026-04-13 #0

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1778353162

Subdomains

ns1.4sw.org

Same first word

4sw.de
4sw.in
4sw.app
4sw.org
4sw.net
4sw.us
4sw.pl
4sw.com
4sw.eu

Similar names

s4w.xyz
w4s.dk
ws4.net
s4w.nl
ws4.nl
4ws.ch
s4w.ch
w4s.net
4ws.com
w4s.cloud
s4w.co
4ws.fr
4ws.com.au
w4s.eu
s4w.cn
s4w.de
ws4.ru
4ws.info
s4w.it
s4w.uk
4ws.it
w4s.ca
s4w.in
w4s.info
w4s.cn
s4w.ru
s4w.com.hr
w4s.de
s4w.com
4ws.cc
4ws.net
ws4.at
ws4.in
s4w.cz
ws4.com
s4w.tech
s4w.us
s4w.co.uk
w4s.com
w4s.biz
4ws.eu
ws4.us
sw4.com
s4w.at
sw4.de
w4s.org
4ws.pl
s4w.org
4ws.cz
sw4.us
ws4.pages.dev
s4w.net
sw4.pl
sw4.net
ws4.org
sw4.co.uk
4ws.org
ws4.cc

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSns1.messagingengine.comns2.messagingengine.comns1.4sw.orgns2.4sw.orgMXin1-smtp.messagingengine.comin2-smtp.messagingengine.commail.4sw.orgA103.168.172.37103.168.172.5272.52.81.12472.52.81.31
○NSns1.4sw.org2015-08-21 → 2016-11-09 · 4 obs
● 2015-08-21 08:38:28
● 2016-11-09 14:23:32
○ 2026-05-09 09:46:00
○ 2026-05-09 19:28:30
●NSns1.messagingengine.com2026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
○NSns2.4sw.org2015-08-21 → 2016-11-09 · 4 obs
● 2015-08-21 08:38:28
● 2016-11-09 14:23:32
○ 2026-05-09 09:46:00
○ 2026-05-09 19:28:30
●NSns2.messagingengine.com2026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
●MXin1-smtp.messagingengine.com2026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
●MXin2-smtp.messagingengine.com2026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
○MXmail.4sw.org2015-08-21 → 2016-11-09 · 4 obs
● 2015-08-21 08:38:28
● 2016-11-09 14:23:32
○ 2026-05-09 09:46:00
○ 2026-05-09 19:28:30
●A103.168.172.372026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
●A103.168.172.522026-05-09 → 2026-05-09 · 3 obs
○ 2016-11-09 14:23:32
● 2026-05-09 09:46:00
● 2026-05-09 19:28:30
○A72.52.81.1242015-08-21 → 2016-11-09 · 4 obs
● 2015-08-21 08:38:28
● 2016-11-09 14:23:32
○ 2026-05-09 09:46:00
○ 2026-05-09 19:28:30
○A72.52.81.312015-08-21 → 2015-08-21 · 3 obs
● 2015-08-21 08:38:28
○ 2015-12-15 15:02:04
○ 2026-05-09 19:28:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
4sw.orgns2.messagingengine.com, ns1.messagingengine.com-

✅ Authoritative Response

Server:162.159.25.191

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4sw.org (unsigned zone)

⏱️ Timing

Total: 289ms | Queries: -

📄 Records

TypeCountSample Data
A2103.168.172.37, 103.168.172.52
NS2ns1.messagingengine.com, ns2.messagingengine.com
MX2in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)
TXT1v=spf1 include:spf.messagingengine.com ?
SOA1ns1.messagingengine.com postmaster.messa

Analysis

Hierarchy

4sw.org is the parent of ns1.4sw.org.

IP Addresses

4sw.org resolves to two IP numbers: 103.168.172.37 and 103.168.172.52.

other host names including reustp.mailc.net, kntic.com, electrictext.com, kaiwells.me and mailslot.net share IP numbers with 4sw.org.

Name Servers

4sw.org is delegated to two name servers ns1.messagingengine.com and ns2.messagingengine.com.

4sw.org shares the same name server setup as other domains, for instance villagegrovehoa.com, interim-global.com, simpledocs.co, telekore.com and ivanderamos.net.

4sw.org shares name servers with other domains at least partially, for example fairgroundhire.co.uk and claremorrisbouncingcastles.com.

These name servers are commonly used alongside ns1.bouncycastlenetwork.co.uk and ns2.bouncycastlenetwork.co.uk.

Host names with one IP number:

ns1.messagingengine.com points to 162.159.24.178

ns2.messagingengine.com points to 162.159.25.191

Mail Servers

Two mail servers handle 4sw.org: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

4sw.org shares the same mail server setup as other domains, for instance iwaprint.com, ns.lonn.org, intrepid.space, nialto.com and massassi.net.

Host names with eight IPs:

in1-smtp.messagingengine.com points to 103.168.172.216103.168.172.217103.168.172.218103.168.172.219103.168.172.220103.168.172.221103.168.172.222 and 103.168.172.223.

Host names with four IPs:

in2-smtp.messagingengine.com points to 202.12.124.216202.12.124.217202.12.124.218 and 202.12.124.219.