linuxsysadmin.co.uk - dns.ninja

`linuxsysadmin.co.uk`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4e41^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:d970^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.78.65^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.217.112^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dee.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a5d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dee.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c05d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dee.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:205d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dee.ns.cloudflare.com`
		A	108.162.192.93^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dee.ns.cloudflare.com`
		A	172.64.32.93^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dee.ns.cloudflare.com`
		A	173.245.58.93^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dee.ns.cloudflare.com`
NS	`ethan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ce8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ethan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3e8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ethan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23e8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ethan.ns.cloudflare.com`
		A	108.162.195.232^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ethan.ns.cloudflare.com`
		A	162.159.44.232^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ethan.ns.cloudflare.com`
		A	172.64.35.232^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ethan.ns.cloudflare.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`v=spf1 include:spf.messagingengine.com ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.78.65, 172.67.217.112
		IPv6 hints	2606:4700:3030::6815:4e41, 2606:4700:3034::ac43:d970
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=177, name=cloudflare-ech.com
SOA	`dee.ns.cloudflare.com`dns@cloudflare.com serial=2406231016

`co.uk`

	DNSSEC	⚠️ Not signed
	NS	`dns1.nic.uk` ⭐ ⚠️ Not in parent delegation
	NS	`dns2.nic.uk` ⚠️ Not in parent delegation
	NS	`dns3.nic.uk` ⚠️ Not in parent delegation
	NS	`dns4.nic.uk` ⚠️ Not in parent delegation
	NS	`nsa.nic.uk` ⚠️ Not in parent delegation
	NS	`nsb.nic.uk` ⚠️ Not in parent delegation
	NS	`nsc.nic.uk` ⚠️ Not in parent delegation
	NS	`nsd.nic.uk` ⚠️ Not in parent delegation
	SOA	`dns1.nic.uk`hostmaster@nominet.org.uk serial=1781310790

rank #131434 globally
rank #5281 in the tld
WOT: SAFE (74/100)

Same first word

linuxsysadmin.com

linuxsysadmin.info

linuxsysadmin.net

linuxsysadmin.io

linuxsysadmin.de

linuxsysadmin.biz

linuxsysadmin.co.uk

Similar names

sysadminlinux.com

DNS History

25 records (8 active, 17 former)

●NSdee.ns.cloudflare.com2026-03-04 → 2026-06-13 · 3 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
● 2026-06-13 00:47:40

●NSethan.ns.cloudflare.com2026-03-04 → 2026-06-13 · 3 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
● 2026-06-13 00:47:40

○NSns0.gradwell.com2015-05-14 → 2016-03-22 · 4 obs

● 2015-05-14 14:47:12
● 2016-03-22 23:18:14
○ 2016-07-12 02:54:44
○ 2026-06-13 00:47:40

○NSns1.gradwell.net2015-05-14 → 2016-03-22 · 4 obs

● 2015-05-14 14:47:12
● 2016-03-22 23:18:14
○ 2016-07-12 02:54:44
○ 2026-06-13 00:47:40

○NSns1.softlayer.com2016-07-12 → 2020-02-22 · 5 obs

○ 2016-03-22 23:18:14
● 2016-07-12 02:54:44
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

○NSns2.gradwell.net2015-05-14 → 2016-03-22 · 4 obs

● 2015-05-14 14:47:12
● 2016-03-22 23:18:14
○ 2016-07-12 02:54:44
○ 2026-06-13 00:47:40

○NSns2.softlayer.com2016-07-12 → 2020-02-22 · 5 obs

○ 2016-03-22 23:18:14
● 2016-07-12 02:54:44
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

○NSnyc.r96.com2015-05-14 → 2020-02-22 · 4 obs

● 2015-05-14 14:47:12
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

○NSnyc.r97.com2015-05-14 → 2020-02-22 · 4 obs

● 2015-05-14 14:47:12
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

●MXin1-smtp.messagingengine.com2026-03-04 → 2026-06-13 · 3 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
● 2026-06-13 00:47:40

●MXin2-smtp.messagingengine.com2026-03-04 → 2026-06-13 · 3 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
● 2026-06-13 00:47:40

○MXmail.linuxsysadmin.co.uk2015-05-14 → 2020-02-22 · 4 obs

● 2015-05-14 14:47:12
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

○MXmxbackup.gradwell.net2015-05-14 → 2016-03-22 · 4 obs

● 2015-05-14 14:47:12
● 2016-03-22 23:18:14
○ 2016-07-12 02:54:44
○ 2026-06-13 00:47:40

○MXr96.com2015-05-14 → 2020-02-22 · 4 obs

● 2015-05-14 14:47:12
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

○MXr97.com2015-05-14 → 2020-02-22 · 4 obs

● 2015-05-14 14:47:12
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

●A104.21.78.652026-03-21 → 2026-06-13 · 3 obs

○ 2026-03-04 13:52:04
● 2026-03-21 10:57:08
● 2026-06-13 00:47:40

○A169.55.84.2062020-02-22 → 2020-02-22 · 4 obs

○ 2017-03-21 09:13:16
● 2020-02-22 14:04:14
○ 2026-03-04 13:52:04
○ 2026-06-13 00:47:40

●A172.67.217.1122026-03-21 → 2026-06-13 · 3 obs

○ 2026-03-04 13:52:04
● 2026-03-21 10:57:08
● 2026-06-13 00:47:40

○A188.114.96.02026-03-04 → 2026-03-04 · 4 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
○ 2026-03-21 10:57:08
○ 2026-06-13 00:47:40

○A188.114.97.02026-03-04 → 2026-03-04 · 4 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
○ 2026-03-21 10:57:08
○ 2026-06-13 00:47:40

●A2606:4700:3030::6815:4e412026-03-21 → 2026-06-13 · 3 obs

○ 2026-03-04 13:52:04
● 2026-03-21 10:57:08
● 2026-06-13 00:47:40

●A2606:4700:3034::ac43:d9702026-03-21 → 2026-06-13 · 3 obs

○ 2026-03-04 13:52:04
● 2026-03-21 10:57:08
● 2026-06-13 00:47:40

○A2a06:98c1:3120::2026-03-04 → 2026-03-04 · 4 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
○ 2026-03-21 10:57:08
○ 2026-06-13 00:47:40

○A2a06:98c1:3121::2026-03-04 → 2026-03-04 · 4 obs

○ 2020-02-22 14:04:14
● 2026-03-04 13:52:04
○ 2026-03-21 10:57:08
○ 2026-06-13 00:47:40

○A67.18.156.1382015-05-14 → 2017-03-21 · 4 obs

● 2015-05-14 14:47:12
● 2017-03-21 09:13:16
○ 2020-02-22 14:04:14
○ 2026-06-13 00:47:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
uk	nsa.nic.uk, nsb.nic.uk, nsc.nic.uk, nsd.nic.uk...	-
linuxsysadmin.co.uk	ethan.ns.cloudflare.com, dee.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.232

NS records: ethan.ns.cloudflare.com, dee.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxsysadmin.co.uk (unsigned zone)

⏱️ Timing

Total: 1095ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.217.112, 104.21.78.65`
AAAA	2	`2606:4700:3034::ac43:d970, 2606:4700:3030::6815:4e41`
NS	2	`dee.ns.cloudflare.com, ethan.ns.cloudflare.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	1	`v=spf1 include:spf.messagingengine.com ?`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dee.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

linuxsysadmin.co.uk points to four IP numbers: 104.21.78.65, 172.67.217.112, 2606:4700:3030::6815:4e41 and 2606:4700:3034::ac43:d970.

klappbett.de.com, gasshowroom.com.au, jaspeproject.com plus two other host names have IP numbers in common with linuxsysadmin.co.uk.

Name Servers

linuxsysadmin.co.uk has two authoritative name servers — dee.ns.cloudflare.com and ethan.ns.cloudflare.com.

The name server configuration of linuxsysadmin.co.uk is shared with other domains, for instance repo-game.org, 82-0-challenge.com, vo3ai.com and two others.

linuxsysadmin.co.uk partially shares its NS delegation with several other domains, including hanifagroup.kz, evarazdin.hr, soul-t.com and two others.

These name servers are regularly seen alongside buck.ns.cloudflare.com and brit.ns.cloudflare.com as name servers.

Hosts with 6 IP addresses each:

dee.ns.cloudflare.com points to 108.162.192.93, 172.64.32.93, 173.245.58.93 and 3 other IP addresses.

ethan.ns.cloudflare.com points to 108.162.195.232, 162.159.44.232, 172.64.35.232 and 3 other IP addresses.

Mail Servers

linuxsysadmin.co.uk uses two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

The mail server setup of linuxsysadmin.co.uk matches that of other domains such as svss.net, blog.mp, evride.au and two others.

linuxsysadmin.co.uk partially shares its mail servers with other domains, 30minuteseder.com and hgm89.com being examples.

Hosts with 8 IP addresses each:

in1-smtp.messagingengine.com points to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 other IP addresses.

Host names with four IP numbers:

in2-smtp.messagingengine.com maps to the following IP addresses: 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.