cdtm.de - dns.ninja

`cdtm.de`

DNSSEC	🔒 Signed (DS record present)
A	138.246.224.218^{🇩🇪 MWN-AS138.246.0.0/16 LMU-WIFO-INK}
		PTR	`cdtm.com`
		PTR	`cdtm.de`
		PTR	`cdtm.es`
NS	`dns1.lrz.de` ⭐
		A	2001:4ca0:0:100:0:53:1:1^{🇩🇪 MWN-AS2001:4ca0::/29 Leibniz-Rechenzentrum Muenchen}
			PTR	`dns1.lrz.de`
		A	129.187.19.183^{🇩🇪 MWN-AS129.187.0.0/16 LRZ-MUNICH-NET}
			PTR	`dns1.lrz.de`
NS	`dns2.lrz.bayern`
		A	2001:4ca0:0:100:0:53:1:2^{🇩🇪 MWN-AS2001:4ca0::/29 Leibniz-Rechenzentrum Muenchen}
			PTR	`dns2.lrz.bayern`
			PTR	`dns2.lrz.de`
		A	141.40.9.211^{🇩🇪 MWN-AS141.40.0.0/16 DFN-AGG-44}
			PTR	`dns2.lrz.bayern`
			PTR	`dns2.lrz.de`
NS	`dns3.lrz.eu`
		A	2001:718:1:1f:50:56ff:feee:180^{🇨🇿 CESNET2001:718::/32 6-TCZ}
			PTR	`dns3.lrz.eu`
		A	78.128.211.180^{🇨🇿 CESNET78.128.128.0/17 -TCZ}
			PTR	`dns3.lrz.eu`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`HARICA-MAbvkxNlWgsEpmEp5AQ`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`dns1.lrz.de`hostmaster@lrz.de 2025-08-31 #36

`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=1786123114

WOT: SAFE (71/100)

PTR for

218.224.246.138.in-addr.arpa

Subdomains

mailgw.cdtm.de

www.cdtm.de

Same first word

cdtm.co.uk

cdtm.com.br

cdtm.com.vn

cdtm.be

cdtm.ru

cdtm.jp

cdtm.de

cdtm.es

cdtm.edu.vn

cdtm.com

Similar names

dmtc.it

dmct.ru

ctdm.ru

cdmt.ch

dtmc.gov.ae

cmtd.com.br

tdmc.ru

dmtc.net

dmct.dk

dmtc.nl

mdtc.org

dmtc.ac.th

mctd.dk

mtdc.pl

mdtc.org.cn

dctm.edu.in

mcdt.com.cn

cdmt.es

tdcm.pl

mdct.com

mctd.org

cdmt.org

cdmt.de

cmtd.de

mtdc.de

tmcd.fr

cmtd.cn

dmtc.org.cn

dmtc.pro

dmtc.k12.sc.us

dcmt.ru

tcmd.ca

tdmc.jp

dmtc.info

dtcm.de

cmtd.com

mcdt.ch

tmdc.com

mtdc.org

mdct.eu

mcdt.io

mtdc.at

dmtc.cn

tcmd.de

cmtd.pl

dctm.cn

tcmd.com

mtdc.ru

cmtd.com.mx

dctm.fr

dmtc.eu

cmdt.fr

tdmc.es

dtmc.org

tcmd.ru

tmdc.ph

tmdc.eu

tcdm.es

ctmd.org

cmtd.ru

dtcm.org

ctmd.fr

tcmd.org.mo

mtcd.ru

mtdc.in

tdcm.cn

cmdt.ru

ctmd.eu

mtdc.net

cmdt.com

tdcm.in

cmtd.xyz

tmdc.com.ph

cdmt.net

dctm.co.uk

tdmc.com

tmdc.ru

dmct.net

cdmt.cat

dctm.de

tmdc.co

tmcd.ca

tdmc.ae

cdmt.com.au

mcdt.net

dmtc.com

dctm.ru

tdmc.in

tmcd.be

tdcm.com.cn

tmcd.ru

mtcd.de

tdcm.de

ctdm.net

dcmt.com

ctmd.ai

DNS History

25 records (9 active, 16 former)

○NSdeneb.dfn.de2009-01-21 → 2017-09-03 · 4 obs

● 2009-01-21 12:36:46
● 2017-09-03 07:51:48
○ 2021-08-25 15:45:10
○ 2026-08-07 17:25:06

○NSdns1.lrz-muenchen.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

●NSdns1.lrz.de2015-08-22 → 2026-08-07 · 3 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2026-08-07 17:25:06

○NSdns2.lrz-muenchen.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

●NSdns2.lrz.bayern2015-08-22 → 2026-08-07 · 3 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2026-08-07 17:25:06

○NSdns3.lrz-muenchen.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

●NSdns3.lrz.eu2015-08-22 → 2026-08-07 · 3 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2026-08-07 17:25:06

●MXalt1.aspmx.l.google.com2026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

●MXalt2.aspmx.l.google.com2026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

●MXalt3.aspmx.l.google.com2026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

●MXalt4.aspmx.l.google.com2026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

●MXaspmx.l.google.com2026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

○MXfang.cdtm.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

○MXfluffy.cdtm.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

○MXmailgw.cdtm.de2015-08-22 → 2017-09-03 · 5 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2017-09-03 07:51:48
○ 2021-08-25 15:45:10
○ 2026-08-07 17:25:06

○MXmailrelay1.lrz-muenchen.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

○MXmailrelay1.lrz.de2015-08-22 → 2017-09-03 · 5 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2017-09-03 07:51:48
○ 2021-08-25 15:45:10
○ 2026-08-07 17:25:06

○MXmailrelay2.lrz-muenchen.de2009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

○MXmailrelay2.lrz.de2015-08-22 → 2017-09-03 · 5 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2017-09-03 07:51:48
○ 2021-08-25 15:45:10
○ 2026-08-07 17:25:06

○MXpostrelay1.lrz.de2021-08-25 → 2021-08-25 · 4 obs

○ 2017-09-03 07:51:48
● 2021-08-25 15:45:10
○ 2026-02-20 07:09:46
○ 2026-08-07 17:25:06

○MXpostrelay2.lrz.de2021-08-25 → 2021-08-25 · 4 obs

○ 2017-09-03 07:51:48
● 2021-08-25 15:45:10
○ 2026-02-20 07:09:46
○ 2026-08-07 17:25:06

○A129.187.150.752015-08-22 → 2016-10-22 · 5 obs

○ 2009-01-21 12:36:46
● 2015-08-22 13:05:22
● 2016-10-22 22:24:34
○ 2016-11-07 22:50:34
○ 2026-08-07 17:25:06

○A129.187.150.822009-01-21 → 2009-01-21 · 3 obs

● 2009-01-21 12:36:46
○ 2015-08-22 13:05:22
○ 2026-08-07 17:25:06

○A129.187.254.2282016-11-07 → 2021-08-25 · 5 obs

○ 2016-10-22 22:24:34
● 2016-11-07 22:50:34
● 2021-08-25 15:45:10
○ 2026-02-20 07:09:46
○ 2026-08-07 17:25:06

●A138.246.224.2182026-02-20 → 2026-08-07 · 3 obs

○ 2021-08-25 15:45:10
● 2026-02-20 07:09:46
● 2026-08-07 17:25:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
cdtm.de	dns2.lrz.bayern, dns3.lrz.eu, dns1.lrz.de	2 records

✅ Authoritative Response

Server:78.128.211.180

NS records: dns2.lrz.bayern, dns3.lrz.eu, dns1.lrz.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1313ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`138.246.224.218`
NS	3	`dns1.lrz.de, dns3.lrz.eu...`
MX	5	`aspmx.l.google.com (pri: 1), alt2.aspmx.l.google.com (pri: 5)...`
TXT	2	`v=spf1 include:_spf.google.com ~all, HARICA-MAbvkxNlWgsEpmEp5AQ`
SOA	1	`dns1.lrz.de hostmaster.lrz.de`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.lrz.de, dns1.lrz.de)

Analysis

Hierarchy

cdtm.de serves as the parent of mailgw.cdtm.de and www.cdtm.de.

IP Addresses

cdtm.de has exactly one IP address — 138.246.224.218.

Host names such as cdtm.es, cdtm.com and tupecdt-website.srv.mwn.de share their IP numbers with cdtm.de.

Name Servers

cdtm.de is served by three name servers: dns2.lrz.bayern, dns1.lrz.de and dns3.lrz.eu.

At least some of cdtm.de's name servers are shared with other domains, for example 66.84.141.in-addr.arpa, bwl.lmu.de, cdtm.es and two more.

These name servers tend to appear together with the name servers dns2.lrz.de, dns3.lrz.de and susi.med.tu-muenchen.de, plus two others.

The hostnames dns2.lrz.bayern, dns1.lrz.de and dns3.lrz.eu each direct to two IP addresses — dns2.lrz.bayern to 141.40.9.211 and 2001:4ca0:0:100:0:53:1:2, dns1.lrz.de to 129.187.19.183 and 2001:4ca0:0:100:0:53:1:1, and dns3.lrz.eu to 78.128.211.180 and 2001:718:1:1f:50:56ff:feee:180.

Mail Servers

Five mail servers handle cdtm.de: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by cdtm.de are shared with other domains: shanethomson.uk, ns500754.ns500754.ns500731.ns500742.ns500731.ns500688.ns500678.ns500671.ns500678.ns500688.ns500671.ns500649.lustychickser.com, ns500698.ns500758.ns500759.ns500759.ns500698.ns500698.ns500735.ns500698.ns500708.ns500698.ns500576.ns500698.ns500686.ns500652.ns500619.trackreceptor.com and two others among them.

These mail servers often appear in conjunction with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names pointing to two IP addresses:

The A records for aspmx.l.google.com return 192.178.155.27 and 2607:f8b0:4004:c21::1b.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.