`triangleacademy.de`

DNSSEC	⚠️ Not signed
A	81.88.34.121^{🇩🇪 CLOUDPIT81.88.32.0/20}
		PTR	`host328.alfahosting-server.de`
NS	`cns1.alfahosting.info` ⭐
		A	2a01:64c0:0:5000::8^{🇩🇪 CLOUDPIT2a01:64c0::/32}
			PTR	`cns1.cloudpit.de`
		A	109.237.142.8^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`cns1.cloudpit.de`
NS	`cns2.alfahosting.info`
		A	2a01:4f8:2b02:a88::105^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`cns2.cloudpit.com`
		A	148.251.254.105^{🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2}
			PTR	`cns2.cloudpit.com`
NS	`cns3.alfahosting.info`
		A	2a02:2b80:101:5000::8^{🇩🇪 CLOUDPIT2a02:2b80:101::/48}
			PTR	`cns3.cloudpit.io`
		A	109.237.143.8^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`cns3.cloudpit.io`
MX	`mx03.secure-mailgate.com` ⭐
		A	46.243.88.174^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node03.secure-mailgate.com`
		A	46.243.88.176^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node04.secure-mailgate.com`
MX	`mx04.secure-mailgate.com` ⭐
		A	46.243.88.175^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node03.secure-mailgate.com`
		A	46.243.88.177^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node04.secure-mailgate.com`
SOA	`cns1.alfahosting.info`hostmaster@alfahosting@de 2026-02-12 #1

`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=1776029889

Subdomains

mail.triangleacademy.de

Same first word

triangleacademy.de

Similar names

integralacademy.de

DNS History

12 records (6 active, 6 former)

●NScns1.alfahosting.info2017-04-20 → 2026-04-12 · 3 obs

○ 2016-10-21 01:46:14
● 2017-04-20 10:43:56
● 2026-04-12 22:06:36

●NScns2.alfahosting.info2017-04-20 → 2026-04-12 · 3 obs

○ 2016-10-21 01:46:14
● 2017-04-20 10:43:56
● 2026-04-12 22:06:36

●NScns3.alfahosting.info2017-04-20 → 2026-04-12 · 3 obs

○ 2016-10-21 01:46:14
● 2017-04-20 10:43:56
● 2026-04-12 22:06:36

○NSns.namespace4you.de2015-07-03 → 2016-10-21 · 4 obs

● 2015-07-03 18:08:22
● 2016-10-21 01:46:14
○ 2017-04-20 10:43:56
○ 2026-04-12 22:06:36

○NSns2.namespace4you.de2015-07-03 → 2016-10-21 · 4 obs

● 2015-07-03 18:08:22
● 2016-10-21 01:46:14
○ 2017-04-20 10:43:56
○ 2026-04-12 22:06:36

○MXmail.triangleacademy.de2017-04-20 → 2017-04-20 · 4 obs

○ 2016-10-21 01:46:14
● 2017-04-20 10:43:56
○ 2026-03-07 14:17:42
○ 2026-04-12 22:06:36

●MXmx03.secure-mailgate.com2026-03-07 → 2026-04-12 · 3 obs

○ 2017-04-20 10:43:56
● 2026-03-07 14:17:42
● 2026-04-12 22:06:36

●MXmx04.secure-mailgate.com2026-03-07 → 2026-04-12 · 3 obs

○ 2017-04-20 10:43:56
● 2026-03-07 14:17:42
● 2026-04-12 22:06:36

○MXmxlb.ispgateway.de2015-07-03 → 2016-10-21 · 4 obs

● 2015-07-03 18:08:22
● 2016-10-21 01:46:14
○ 2017-04-20 10:43:56
○ 2026-04-12 22:06:36

○A109.237.132.102017-04-20 → 2017-04-20 · 4 obs

○ 2016-10-21 01:46:14
● 2017-04-20 10:43:56
○ 2026-03-07 14:17:42
○ 2026-04-12 22:06:36

●A81.88.34.1212026-03-07 → 2026-04-12 · 3 obs

○ 2017-04-20 10:43:56
● 2026-03-07 14:17:42
● 2026-04-12 22:06:36

○A84.38.64.2022015-07-03 → 2016-10-21 · 4 obs

● 2015-07-03 18:08:22
● 2016-10-21 01:46:14
○ 2017-04-20 10:43:56
○ 2026-04-12 22:06:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	z.nic.de, a.nic.de, f.nic.de	-
triangleacademy.de	cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info	-

✅ Authoritative Response

Server:109.237.143.8

NS records: cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for triangleacademy.de (unsigned zone)

⏱️ Timing

Total: 1360ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.88.34.121`
NS	3	`cns2.alfahosting.info, cns1.alfahosting.info...`
MX	2	`mx04.secure-mailgate.com (pri: 10), mx03.secure-mailgate.com (pri: 10)`
SOA	1	`cns1.alfahosting.info hostmaster@alfahos`

Analysis

Hierarchy

The parent of mail.triangleacademy.de is triangleacademy.de.

IP Addresses

triangleacademy.de points to a single IP address: 81.88.34.121.

Other host names such as salon-yassin.de, www.salon-yassin.de, livimo.de, mail.svst.de and sanskritweb.net share IPs with triangleacademy.de.

Name Servers

triangleacademy.de is delegated to three name servers: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.

triangleacademy.de at least partially shares name servers with other domains, for example westibuel.de, betmonitor.com, fliesen-weimer.com, herzoman.de and elephantequity.com.

Host names with two IP numbers:

cns1.alfahosting.info points to 2a01:64c0:0:5000::8 and 109.237.142.8

cns2.alfahosting.info points to 2a01:4f8:2b02:a88::105 and 148.251.254.105

cns3.alfahosting.info points to 2a02:2b80:101:5000::8 and 109.237.143.8

Mail Servers

Two mail servers handle triangleacademy.de: mx03.secure-mailgate.com and mx04.secure-mailgate.com.

triangleacademy.de shares the same mail server setup as other domains, including comprico.at, holger-kumm.de, collie-white-socks.de, worldbright.org and quantified-self.org.

triangleacademy.de shares at least some mail servers with other domains, for example gymnasium-calvarienberg.de and bsc-buederich.de.

Host names with two IP numbers:

mx03.secure-mailgate.com points to 46.243.88.174 and 46.243.88.176.

mx04.secure-mailgate.com points to 46.243.88.175 and 46.243.88.177.

triangleacademy.de - robtex.com