`contactsystems.info`

DNSSEC	⚠️ Not signed
A	2a01:238:20a:202:1163::^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
A	81.169.145.163^{🇩🇪 STRATO81.169.144.0/22 AG}
NS	`docks20.rzone.de` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:20^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks20.rzone.de`
		A	217.160.80.147^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks20.rzone.de`
NS	`shades11.rzone.de`
		A	2607:f1c0:fe:53:185:132:34:138^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`shades11.rzone.de`
		A	185.132.34.138^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades11.rzone.de`
MX	`smtpin.rzone.de` ⭐
		A	2a01:238:20a:202:50f0::1097^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
			PTR	`smtpin.rzone.de`
		A	81.169.145.97^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`smtpin.rzone.de`
TXT	`v=spf1 mx a ip4:46.237.226.153 ip4:80.152.173.209 ~all`
SOA	`docks20.rzone.de`hostmaster@strato-rz.de 2020-09-22 #88

`info`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.info.afilias-nst.info` ⭐
	NS	`a2.info.afilias-nst.info`
	NS	`b0.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`b2.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`c0.info.afilias-nst.info`
	NS	`d0.info.afilias-nst.org` ⚠️ Not in parent delegation
	SOA	`a0.info.afilias-nst.info`hostmaster@donuts.email serial=1773555327

Subdomains

mail.contactsystems.info

Same first word

contactsystems.info

contactsystems.org

contactsystems.com

contactsystems.co.uk

DNS History

14 records (5 active, 9 former)

●NSdocks20.rzone.de2015-07-03 → 2026-03-23 · 2 obs

● 2015-07-03 02:19:32
● 2026-03-23 05:42:26

●NSshades11.rzone.de2015-07-03 → 2026-03-23 · 2 obs

● 2015-07-03 02:19:32
● 2026-03-23 05:42:26

○MXmail.contactsystems.info2019-12-28 → 2019-12-28 · 4 obs

○ 2017-02-20 01:07:18
● 2019-12-28 01:48:56
○ 2026-03-21 09:19:42
○ 2026-03-23 05:42:26

○MXmail02.csisit.de2016-06-23 → 2017-02-20 · 5 obs

○ 2016-02-11 04:45:58
● 2016-06-23 15:42:24
● 2017-02-20 01:07:18
○ 2019-12-28 01:48:56
○ 2026-03-23 05:42:26

○MXmail1.contactsystems.info2015-07-03 → 2016-02-11 · 4 obs

● 2015-07-03 02:19:32
● 2016-02-11 04:45:58
○ 2016-06-23 15:42:24
○ 2026-03-23 05:42:26

○MXmail2.contactsystems.info2015-07-03 → 2016-02-11 · 4 obs

● 2015-07-03 02:19:32
● 2016-02-11 04:45:58
○ 2016-06-23 15:42:24
○ 2026-03-23 05:42:26

○MXrelay.rzone.de2015-07-03 → 2019-12-28 · 4 obs

● 2015-07-03 02:19:32
● 2019-12-28 01:48:56
○ 2026-03-21 09:19:42
○ 2026-03-23 05:42:26

●MXsmtpin.rzone.de2026-03-21 → 2026-03-23 · 3 obs

○ 2019-12-28 01:48:56
● 2026-03-21 09:19:42
● 2026-03-23 05:42:26

○A193.141.3.692019-12-28 → 2019-12-28 · 4 obs

○ 2017-02-20 01:07:18
● 2019-12-28 01:48:56
○ 2026-03-21 09:19:42
○ 2026-03-23 05:42:26

○A2a01:238:20a:202:1069::2019-12-28 → 2019-12-28 · 4 obs

○ 2017-02-20 01:07:18
● 2019-12-28 01:48:56
○ 2026-03-21 09:19:42
○ 2026-03-23 05:42:26

○A2a01:238:20a:202:1076::2015-07-03 → 2017-02-20 · 4 obs

● 2015-07-03 02:19:32
● 2017-02-20 01:07:18
○ 2019-12-28 01:48:56
○ 2026-03-23 05:42:26

●A2a01:238:20a:202:1163::2026-03-21 → 2026-03-23 · 3 obs

○ 2019-12-28 01:48:56
● 2026-03-21 09:19:42
● 2026-03-23 05:42:26

●A81.169.145.1632026-03-21 → 2026-03-23 · 3 obs

○ 2019-12-28 01:48:56
● 2026-03-21 09:19:42
● 2026-03-23 05:42:26

○A81.169.145.762015-07-03 → 2017-02-20 · 4 obs

● 2015-07-03 02:19:32
● 2017-02-20 01:07:18
○ 2019-12-28 01:48:56
○ 2026-03-23 05:42:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
info	a0.info.afilias-nst.info, c0.info.afilias-nst.info, a2.info.afilias-nst.info	-
contactsystems.info	docks20.rzone.de, shades11.rzone.de	-

✅ Authoritative Response

Server:217.160.80.147

NS records: docks20.rzone.de, shades11.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contactsystems.info (unsigned zone)

⏱️ Timing

Total: 801ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.169.145.163`
AAAA	1	`2a01:238:20a:202:1163::`
NS	2	`docks20.rzone.de, shades11.rzone.de`
MX	1	`smtpin.rzone.de (pri: 5)`
TXT	1	`v=spf1 mx a ip4:46.237.226.153 ip4:80.15`
SOA	1	`docks20.rzone.de hostmaster.strato-rz.de`

Analysis

Hierarchy

contactsystems.info is a parent of mail.contactsystems.info.

IP Addresses

contactsystems.info points to two IP numbers: 2a01:238:20a:202:1163:: and 81.169.145.163.

Other host names, for instance dipax.com, eastlive.de, merger.email, ski-depot.de and turningpointband.de share IP numbers with contactsystems.info.

Name Servers

Delegation for contactsystems.info rests with two name servers, docks20.rzone.de and shades11.rzone.de.

contactsystems.info shares the same name server setup as other domains, including diem.de, arthur-klein.com, nothilfe-polarhunde.org, studiobotanic.de and gausler.eu.

contactsystems.info at least partially shares name servers with other domains, for instance illias.nl, xplasma.de, pfalz-24.de, myrta.eu and rentplanet.de.

These name servers are commonly used together with the name servers shades16.rzone.de, docks13.rzone.de, shades01.rzone.de, shades02.rzone.de, shades07.rzone.de, docks08.rzone.de, docks05.rzone.de, shades19.rzone.de, shades20.rzone.de and docks17.rzone.de.

Host names with two IP numbers: docks20.rzone.de points to 2001:8d8:fe:53:5747:2a74:d:20 and 217.160.80.147; shades11.rzone.de points to 2607:f1c0:fe:53:185:132:34:138 and 185.132.34.138.

Mail Servers

contactsystems.info is handled by a single mail server, smtpin.rzone.de.

contactsystems.info uses the same mail server configuration as other domains, such as grdxkn.com, jht-de.com, teichfolie.org, pecina.de and aldiss.de.

smtpin.rzone.de resolves to two IP numbers: 2a01:238:20a:202:50f0::1097 and 81.169.145.97.

contactsystems.info - robtex.com