cat0.de - dns.ninja

`cat0.de`

DNSSEC	⚠️ Not signed
A	103.168.172.37^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
		PTR	`www.messagingengine.com`
A	103.168.172.52^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
NS	`ns1.messagingengine.com` ⭐
		A	162.159.24.178^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.messagingengine.com`
NS	`ns2.messagingengine.com`
		A	162.159.25.191^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.messagingengine.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`v=spf1 include:spf.messagingengine.com ?all`
SOA	`ns1.messagingengine.com`postmaster@messagingengine.com 2026-06-04 #0

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1781797419

Subdomains

www.cat0.de

proxima.cat0.de

mail.cat0.de

ns.cat0.de

Same first word

cat0.com

cat0.net

cat0.de

Similar names

tac0.com

tca0.nl

a0ct.mobi

0cat.top

0act.com

0cta.com

ca0t.pro

0cat.com

act0.com

tac0.net

DNS History

14 records (6 active, 8 former)

○NSltw.loris.tv2015-05-25 → 2017-02-14 · 5 obs

○ 2008-09-29 20:14:00
● 2015-05-25 11:00:52
● 2017-02-14 22:24:42
○ 2020-03-24 01:01:08
○ 2026-06-18 15:57:46

○NSns.cat0.de2015-05-25 → 2017-02-14 · 5 obs

○ 2008-09-29 20:14:00
● 2015-05-25 11:00:52
● 2017-02-14 22:24:42
○ 2020-03-24 01:01:08
○ 2026-06-18 15:57:46

○NSns1.canexpert.de2008-09-29 → 2008-09-29 · 3 obs

● 2008-09-29 20:14:00
○ 2015-05-25 11:00:52
○ 2026-06-18 15:57:46

●NSns1.messagingengine.com2020-03-24 → 2026-06-18 · 3 obs

○ 2017-02-14 22:24:42
● 2020-03-24 01:01:08
● 2026-06-18 15:57:46

○NSns2.canexpert.de2008-09-29 → 2008-09-29 · 3 obs

● 2008-09-29 20:14:00
○ 2015-05-25 11:00:52
○ 2026-06-18 15:57:46

●NSns2.messagingengine.com2020-03-24 → 2026-06-18 · 3 obs

○ 2017-02-14 22:24:42
● 2020-03-24 01:01:08
● 2026-06-18 15:57:46

●MXin1-smtp.messagingengine.com2020-03-24 → 2026-06-18 · 3 obs

○ 2017-02-14 22:24:42
● 2020-03-24 01:01:08
● 2026-06-18 15:57:46

●MXin2-smtp.messagingengine.com2020-03-24 → 2026-06-18 · 3 obs

○ 2017-02-14 22:24:42
● 2020-03-24 01:01:08
● 2026-06-18 15:57:46

○MXmail.cat0.de2008-09-29 → 2017-02-14 · 4 obs

● 2008-09-29 20:14:00
● 2017-02-14 22:24:42
○ 2020-03-24 01:01:08
○ 2026-06-18 15:57:46

●A103.168.172.372026-02-19 → 2026-06-18 · 3 obs

○ 2020-03-24 01:01:08
● 2026-02-19 08:47:14
● 2026-06-18 15:57:46

●A103.168.172.522026-02-19 → 2026-06-18 · 3 obs

○ 2020-03-24 01:01:08
● 2026-02-19 08:47:14
● 2026-06-18 15:57:46

○A66.111.4.532020-03-24 → 2020-03-24 · 4 obs

○ 2015-05-25 11:00:52
● 2020-03-24 01:01:08
○ 2026-02-19 08:47:14
○ 2026-06-18 15:57:46

○A66.111.4.542020-03-24 → 2020-03-24 · 4 obs

○ 2015-05-25 11:00:52
● 2020-03-24 01:01:08
○ 2026-02-19 08:47:14
○ 2026-06-18 15:57:46

○A87.118.102.882008-09-29 → 2008-09-29 · 3 obs

● 2008-09-29 20:14:00
○ 2015-05-25 11:00:52
○ 2026-06-18 15:57:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
cat0.de	ns1.messagingengine.com, ns2.messagingengine.com	-

✅ Authoritative Response

Server:162.159.24.178

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cat0.de (unsigned zone)

⏱️ Timing

Total: 668ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`103.168.172.37, 103.168.172.52`
NS	2	`ns1.messagingengine.com, ns2.messagingengine.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	1	`v=spf1 include:spf.messagingengine.com ?`
SOA	1	`ns1.messagingengine.com postmaster.messa`

Analysis

Hierarchy

cat0.de is the parent domain of www.cat0.de, proxima.cat0.de, mail.cat0.de and ns.cat0.de.

IP Addresses

cat0.de resolves to the IP addresses 103.168.172.37 and 103.168.172.52

tisdol.com, restoremail.org, iliff.us plus two other host names have IP numbers in common with cat0.de.

Name Servers

Two name servers handle the delegation for cat0.de: ns1.messagingengine.com and ns2.messagingengine.com.

The name server configuration of cat0.de is shared with other domains, for instance akimail.jp, aswin.co, z3.net and two others.

cat0.de at least partially shares name servers with other domains, including bouncing4fun.co.uk, ultimatebounceaz.com, joscastles.com and tumblenbounce.com.

These name servers are frequently paired with the name servers ns1.bouncycastlenetwork.co.uk and ns2.bouncycastlenetwork.co.uk.

ns1.messagingengine.com and ns2.messagingengine.com each resolve to one IP number: ns1.messagingengine.com points to 162.159.24.178 and ns2.messagingengine.com points to 162.159.25.191.

Mail Servers

cat0.de uses two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

The mail server setup of cat0.de matches that of other domains such as driftingsands.com, mistymountainfarm.com, stefan-betz.net and two others.

cat0.de shares at least some of its mail servers with other domains, such as kevinwebb.io.

Hosts with 8 IP addresses each:

in1-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:

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