`1a-computertechnik.de`

DNSSEC	⚠️ Not signed
A	81.88.34.189^{🇩🇪 CLOUDPIT81.88.32.0/20}
		PTR	`host326.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	`1acomputertechnik-de0e.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::2^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du2pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::6^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::a^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du0pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.5^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du2pr03cu00105.inbound.protection.outlook.com`
		A	52.101.68.10^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dbbpr03cu00102.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`MS=ms45109418`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
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=1776096054

Subdomains

mail.1a-computertechnik.de

Same first word

1a-computertechnik.de

DNS History

7 records (5 active, 2 former)

●NScns1.alfahosting.info2015-06-29 → 2026-04-13 · 2 obs

● 2015-06-29 03:22:34
● 2026-04-13 16:31:02

●NScns2.alfahosting.info2015-06-29 → 2026-04-13 · 2 obs

● 2015-06-29 03:22:34
● 2026-04-13 16:31:02

●NScns3.alfahosting.info2015-06-29 → 2026-04-13 · 2 obs

● 2015-06-29 03:22:34
● 2026-04-13 16:31:02

●MX1acomputertechnik-de0e.mail.protection.outlook.com2016-12-31 → 2026-04-13 · 3 obs

○ 2016-04-20 00:00:48
● 2016-12-31 11:35:38
● 2026-04-13 16:31:02

○MXmail.1a-computertechnik.de2015-06-29 → 2016-04-20 · 4 obs

● 2015-06-29 03:22:34
● 2016-04-20 00:00:48
○ 2016-12-31 11:35:38
○ 2026-04-13 16:31:02

○A109.237.134.222015-06-29 → 2018-05-27 · 4 obs

● 2015-06-29 03:22:34
● 2018-05-27 05:15:08
○ 2026-04-13 13:28:40
○ 2026-04-13 16:31:02

●A81.88.34.1892026-04-13 → 2026-04-13 · 3 obs

○ 2018-05-27 05:15:08
● 2026-04-13 13:28:40
● 2026-04-13 16:31:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
1a-computertechnik.de	cns1.alfahosting.info, cns2.alfahosting.info, cns3.alfahosting.info	-

✅ Authoritative Response

Server:109.237.142.8

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1a-computertechnik.de (unsigned zone)

⏱️ Timing

Total: 1177ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.88.34.189`
NS	3	`cns3.alfahosting.info, cns2.alfahosting.info...`
MX	1	`1acomputertechnik-de0e.mail.protection.o`
TXT	2	`MS=ms45109418, v=spf1 include:spf.protection.outlook.co`
SOA	1	`cns1.alfahosting.info hostmaster.alfahos`

Analysis

Hierarchy

1a-computertechnik.de is the parent of mail.1a-computertechnik.de.

IP Addresses

1a-computertechnik.de resolves to a single IP: 81.88.34.189.

Other host names, for instance mail.x3.net, mitochondrion.biz, mail.vektor-resveratrol.biz, mail.goldstein-interieur.de and mail.geisternet.com share IP numbers with 1a-computertechnik.de.

Name Servers

1a-computertechnik.de delegates to three name servers: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.

1a-computertechnik.de shares some name servers with other domains, for example claudiakaufmann.com, polo-landsberg.de, naturheilpraxis-boekels.de, mbg-e.de and westcast.de.

Host names with two IP numbers:

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

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

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

Mail Servers

1a-computertechnik.de is handled by a single mail server, 1acomputertechnik-de0e.mail.protection.outlook.com.

Host 1acomputertechnik-de0e.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::2, 2a01:111:f403:ca04::6, 2a01:111:f403:ca04::a, 2a01:111:f403:ca09::d, 52.101.68.5, 52.101.68.10, 52.101.68.16 and 52.101.73.26.

1a-computertechnik.de - robtex.com