checkmk.com - dns.ninja

`checkmk.com`

DNSSEC	🔒 Signed (DS record present)
A	2a0a:51c1:0:5::4^{🇩🇪 IP-PROJECTS2a0a:51c1::/32}
		PTR	`www.checkmk.com`
A	45.133.11.28^{🇩🇪 IP-PROJECTS45.133.11.0/24}
NS	`ns2.inwx.de` ⭐
		A	2001:67c:10b8::104^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.anycastdns.ch`
			PTR	`ns2.inwx.ch`
			PTR	`ns2.inwx.com`
			PTR	`ns2.inwx.de`
			PTR	`b.xnameserver.de`
			PTR	`ns2.inwx.es`
			PTR	`ns.domrobot.net`
		A	176.97.158.104^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.anycastdns.ch`
			PTR	`ns2.inwx.ch`
			PTR	`ns2.inwx.com`
			PTR	`ns2.inwx.de`
			PTR	`b.xnameserver.de`
			PTR	`ns2.inwx.es`
			PTR	`ns.domrobot.net`
NS	`ns.inwx.de`
		A	2001:67c:1bc::104^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.anycastdns.ch`
			PTR	`ns.inwx.ch`
			PTR	`ns.domrobot.com`
			PTR	`ns.inwx.com`
			PTR	`ns.inwx.de`
			PTR	`a.xnameserver.de`
			PTR	`ns.inwx.es`
		A	192.174.68.104^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.anycastdns.ch`
			PTR	`ns.inwx.ch`
			PTR	`ns.domrobot.com`
			PTR	`ns.inwx.com`
			PTR	`ns.inwx.de`
			PTR	`a.xnameserver.de`
			PTR	`ns.inwx.es`
NS	`ns1.he.net`
		A	2001:470:100::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns1.he.net`
		A	216.218.130.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns1.he.net`
NS	`ns2.he.net`
		A	2001:470:200::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns2.he.net`
		A	216.218.131.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns2.he.net`
NS	`ns3.he.net`
		A	2001:470:300::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns3.he.net`
		A	216.218.132.2^{🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns3.he.net`
NS	`ns4.he.net`
		A	2001:470:400::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns4.he.net`
		A	216.66.1.2^{🇺🇸 HURRICANE216.66.0.0/19 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns4.he.net`
NS	`ns5.he.net`
		A	2001:470:500::2^{🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns5.he.net`
		A	216.66.80.18^{🇺🇸 HURRICANE216.66.80.0/20 Hurricane Electric 55 South Market St San Jose, CA}
			PTR	`ns5.he.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.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::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`ZOOM_verify_wH9fWw6gbQ1VO3o6VS2TfU`
TXT	`amazon-business-verification=8901afee0b8a267d515a4dcbbcc445429a1c71575f052452...`
TXT	`anthropic-domain-verification-0jj92r=Hs7nBXHEThYiHT0TjKTYOT0Ow`
TXT	`apple-domain-verification=FZGTGgsKysdsIqFy`
TXT	`atlassian-domain-verification=aruuh2bN0nNRkAbi7KhvFDev/BX6DWk6qj3cBsASpo67bAL...`
TXT	`google-site-verification=R2GBikiCn07XAzg6ZJ4Z52kBG_CpyZ0aidQCgQefMbY`
TXT	`google-site-verification=o6RjkjJs7Zmf0486_G9WT4byaxkJVq8t5N3Rbiqjd-k`
TXT	`google-site-verification=oCZ7qUrWl9OuRWPRfSeMRmd98dZm4DTxlJ8K2K2Dtcc`
TXT	`google-site-verification=oeeXXZPp7XKGGdVg4bC7VsbShPw6YxWCnUCEgk_d1zQ`
TXT	`google-site-verification=uvg85k2W5vOQvq5ty4rzazdiyKfW1DbS3BuH8stEBOs`
TXT	`have-i-been-pwned-verification=6d97e6572253d7cadcf5af79ceeaeb32`
TXT	`jetbrains-domain-verification=22y0xr7ueeudevw3zjqm3jn3x`
TXT	`slack-domain-verification=QOpNbUdNys7oOI6WEDi0Zz2o7Cm5EplGqB2lN4pP`
TXT	`v=spf1 ip4:45.133.11.0/26 ip6:2a0a:51c1:0:5::/64 include:5202598.spf01.hubspo...`
TXT	`yahoo-verification-key=SfVhTcx9nJbrUwRodJt0r669eRR2TX0G83Gz1beOygo=`
SOA	`ns.inwx.de`admin@checkmk.com 2026-07-30 #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=1785825122

rank #61293 globally
rank #29685 in the tld
🔒 HSTS Preload (+subdomains)
📈 Tranco rank: #106,465

Subdomains

forum.checkmk.com

kb.checkmk.com

play.checkmk.com

analytics.checkmk.com

www.checkmk.com

Same first word

checkmk.com

checkmk.cloud

DNS History

21 records (14 active, 7 former)

●NSns.inwx.de2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

○NSns1.dsredirection.com2016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

●NSns1.he.net2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

○NSns2.dsredirection.com2016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

●NSns2.he.net2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●NSns2.inwx.de2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●NSns3.he.net2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●NSns4.he.net2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●NSns5.he.net2026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●MXalt1.aspmx.l.google.com2026-02-24 → 2026-08-04 · 2 obs

● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●MXalt2.aspmx.l.google.com2026-02-24 → 2026-08-04 · 2 obs

● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●MXalt3.aspmx.l.google.com2026-02-24 → 2026-08-04 · 2 obs

● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●MXalt4.aspmx.l.google.com2026-02-24 → 2026-08-04 · 2 obs

● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●MXaspmx.l.google.com2026-02-24 → 2026-08-04 · 2 obs

● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

○A208.73.210.2002016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

○A208.73.210.2142016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

○A208.73.210.2172016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

○A208.73.211.1782016-08-08 → 2017-03-27 · 4 obs

● 2016-08-08 21:16:34
● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

●A2a0a:51c1:0:5::42026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

●A45.133.11.282026-02-24 → 2026-08-04 · 3 obs

○ 2017-03-27 05:32:08
● 2026-02-24 16:20:16
● 2026-08-04 06:44:40

○PTRns1.dsredirection.com2017-03-27 → 2017-03-27 · 3 obs

● 2017-03-27 05:32:08
○ 2026-02-24 16:20:16
○ 2026-08-04 06:44:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
checkmk.com	ns1.he.net, ns2.he.net, ns3.he.net, ns2.inwx.de...	-

✅ Authoritative Response

Server:216.218.130.2

NS records: ns1.he.net, ns2.he.net, ns3.he.net, ns2.inwx.de, ns.inwx.de, ns4.he.net, ns5.he.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1188ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.133.11.28`
AAAA	1	`2a0a:51c1:0:5::4`
NS	7	`ns2.inwx.de, ns1.he.net...`
MX	5	`aspmx.l.google.com (pri: 1), alt4.aspmx.l.google.com (pri: 10)...`
TXT	15	`ZOOM_verify_wH9fWw6gbQ1VO3o6VS2TfU, amazon-business-verification=8901afee0b8...`
SOA	1	`ns.inwx.de admin.checkmk.com`

Analysis

Hierarchy

checkmk.com is a parent domain of forum.checkmk.com, kb.checkmk.com, play.checkmk.com, analytics.checkmk.com and www.checkmk.com.

IP Addresses

checkmk.com resolves to the IP addresses 45.133.11.28 and 2a0a:51c1:0:5::4

Additional host names — check-mk.com, www.tribe29.com, www.checkmk.com and two others — share IP numbers with checkmk.com.

Name Servers

checkmk.com is served by 7 authoritative name servers — among them ns2.inwx.de, ns.inwx.de, ns1.he.net and 4 others.

checkmk.com shares at least some of its name servers with other domains, including rak.ca, ewhof.de, haus-glasella.at and two others.

These name servers are frequently seen alongside ns3.he.net, ns2.he.net, ns5.he.net and 3 other name servers.

Host names with two IP numbers:

ns2.inwx.de resolves to two addresses: 176.97.158.104 and 2001:67c:10b8::104.

ns.inwx.de resolves to two addresses: 192.174.68.104 and 2001:67c:1bc::104.

ns1.he.net resolves to two addresses: 216.218.130.2 and 2001:470:100::2.

ns2.he.net resolves to two addresses: 216.218.131.2 and 2001:470:200::2.

ns3.he.net resolves to two addresses: 216.218.132.2 and 2001:470:300::2.

ns4.he.net resolves to two addresses: 216.66.1.2 and 2001:470:400::2.

ns5.he.net resolves to two addresses: 216.66.80.18 and 2001:470:500::2.

Mail Servers

checkmk.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

checkmk.com shares mail servers — at least in part — with other domains, including ns500731.ns500754.ns500742.ns500671.ns500704.ns500688.ns500678.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com, ns500742.ns500671.ns500754.ns500742.ns500754.ns500704.ns500704.ns500704.ns500688.ns500704.ns500704.ns500704.ns500649.ns500649.ns500649.lustychickser.com, ns500693.ns500693.ns500734.ns500699.ns500693.ns500699.ns500693.ns500699.ns500632.ns500612.ns500588.ns500588.ns500588.ns500612.ns500588.ns500578.ns500110.dtrkdll.com and two others.

These mail servers are frequently paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com resolves to two addresses: 142.250.31.26 and 2607:f8b0:4004:c07::1b.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1a.