ko-computer.com - dns.ninja

`ko-computer.com`

DNSSEC	⚠️ Not signed
A	81.88.34.80^{🇩🇪 CLOUDPIT81.88.32.0/20}
		PTR	`host231.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 2026-01-22 #1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1781849295

Subdomains

mail.ko-computer.com

Same first word

ko-computer.com

Similar names

computer-ok.net

ok-computer.es

ok-computer.eu

ok-computer.org

computer-ok.de

ok-computer.net

ok-computer.com.mx

computer-ok.it

computer-ok.ru

ok-computer.at

ok-computer.com

computer-ok.com

DNS History

12 records (6 active, 6 former)

●NScns1.alfahosting.info2015-08-07 → 2026-06-19 · 3 obs

○ 2008-03-13 03:39:32
● 2015-08-07 02:42:44
● 2026-06-19 06:32:52

●NScns2.alfahosting.info2015-08-07 → 2026-06-19 · 3 obs

○ 2008-03-13 03:39:32
● 2015-08-07 02:42:44
● 2026-06-19 06:32:52

●NScns3.alfahosting.info2015-08-07 → 2026-06-19 · 3 obs

○ 2008-03-13 03:39:32
● 2015-08-07 02:42:44
● 2026-06-19 06:32:52

○NSns10.alfahosting.info2008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 03:39:32
○ 2015-08-07 02:42:44
○ 2026-06-19 06:32:52

○NSns8.alfahosting.info2008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 03:39:32
○ 2015-08-07 02:42:44
○ 2026-06-19 06:32:52

○NSns9.alfahosting.info2008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 03:39:32
○ 2015-08-07 02:42:44
○ 2026-06-19 06:32:52

○MXmail.ko-computer.com2008-03-13 → 2020-03-08 · 4 obs

● 2008-03-13 03:39:32
● 2020-03-08 12:34:14
○ 2026-04-10 09:50:16
○ 2026-06-19 06:32:52

●MXmx03.secure-mailgate.com2026-04-10 → 2026-06-19 · 3 obs

○ 2020-03-08 12:34:14
● 2026-04-10 09:50:16
● 2026-06-19 06:32:52

●MXmx04.secure-mailgate.com2026-04-10 → 2026-06-19 · 3 obs

○ 2020-03-08 12:34:14
● 2026-04-10 09:50:16
● 2026-06-19 06:32:52

○A109.237.138.342015-08-07 → 2020-03-08 · 5 obs

○ 2008-03-13 03:39:32
● 2015-08-07 02:42:44
● 2020-03-08 12:34:14
○ 2026-04-10 09:50:16
○ 2026-06-19 06:32:52

●A81.88.34.802026-04-10 → 2026-06-19 · 3 obs

○ 2020-03-08 12:34:14
● 2026-04-10 09:50:16
● 2026-06-19 06:32:52

○A85.214.57.1952008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 03:39:32
○ 2015-08-07 02:42:44
○ 2026-06-19 06:32:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ko-computer.com	cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info	-

✅ Authoritative Response

Server:148.251.254.105

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ko-computer.com (unsigned zone)

⏱️ Timing

Total: 1773ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.88.34.80`
NS	3	`cns3.alfahosting.info, cns1.alfahosting.info...`
MX	2	`mx03.secure-mailgate.com (pri: 10), mx04.secure-mailgate.com (pri: 10)`
SOA	1	`cns1.alfahosting.info hostmaster.alfahos`

Analysis

Hierarchy

mail.ko-computer.com is delegated beneath ko-computer.com.

IP Addresses

ko-computer.com resolves to one IP address: 81.88.34.80.

salsa4ever.com, neworleansoriginals.de, mail.delor.de and two other host names share IP numbers with ko-computer.com.

Name Servers

The authoritative name servers for ko-computer.com are cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info — three in total.

There is at least partial name server overlap between ko-computer.com and other domains — krumbeinmed.de, printednature.com, cappet.at and two more among them.

cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info all resolve to exactly two IP numbers apiece: cns1.alfahosting.info → 109.237.142.8 and 2a01:64c0:0:5000::8; cns2.alfahosting.info → 148.251.254.105 and 2a01:4f8:2b02:a88::105; cns3.alfahosting.info → 109.237.143.8 and 2a02:2b80:101:5000::8.

Mail Servers

Mail for ko-computer.com is handled by two mail servers — mx03.secure-mailgate.com and mx04.secure-mailgate.com.

ko-computer.com uses an identical mail server configuration to several other domains — among them buergerschule.eu, 4yourego.de, tischlerei-guenther.net and two more.

ko-computer.com and other domains — viveri-shop.de for instance — share at least some mail servers.

The two host names mx03.secure-mailgate.com and mx04.secure-mailgate.com each have a pair of IP addresses: mx03.secure-mailgate.com has 46.243.88.174 and 46.243.88.176, and mx04.secure-mailgate.com has 46.243.88.175 and 46.243.88.177.