linux-admin.com - dns.ninja

`linux-admin.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:c8b2^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:550d^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.85.13^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.200.178^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ns1.ubmdns.com` ⭐
		A	2400:cb00:2049:1::a29f:d0^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.ubmdns.com`
		A	162.159.0.208^{Cloudflare162.159.0.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.ubmdns.com`
		A	2400:cb00:2049:1::a29f:1d0^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.ubmdns.com`
		A	162.159.1.208^{Cloudflare162.159.1.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.ubmdns.com`
TXT	`v=spf1 mx include:spf.ubm-us.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.85.13, 172.67.200.178
		IPv6 hints	2606:4700:3031::ac43:c8b2, 2606:4700:3034::6815:550d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOA	`ns1.ubmdns.com`dns@cloudflare.com serial=2407045814

`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=1782137565

Same first word

linux-admin.at

linux-admin.net.ru

linux-admin.de

linux-admin.ro

linux-admin.com

linux-admin.net

linux-admin.ru

linux-admin.pl

linux-admin.eu

Similar names

admin-linux.net

admin-linux.pro

admin-linux.fr

admin-linux.org

admin-linux.com

DNS History

14 records (6 active, 8 former)

○NSns1.ubm-us.net2015-08-22 → 2016-12-23 · 4 obs

● 2015-08-22 23:34:54
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

●NSns1.ubmdns.com2026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

○NSns2.ubm-us.net2015-08-22 → 2016-12-23 · 4 obs

● 2015-08-22 23:34:54
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

●NSns2.ubmdns.com2026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

○NSns3.ubm-us.net2015-08-22 → 2016-12-23 · 4 obs

● 2015-08-22 23:34:54
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

○MXmailhost.ubm-us.net2015-08-22 → 2016-12-23 · 4 obs

● 2015-08-22 23:34:54
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

●A104.21.85.132026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

●A172.67.200.1782026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

○A192.155.42.932016-12-23 → 2016-12-23 · 4 obs

○ 2016-09-03 21:45:36
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

○A192.155.48.932015-08-22 → 2016-09-03 · 4 obs

● 2015-08-22 23:34:54
● 2016-09-03 21:45:36
○ 2016-12-23 14:59:14
○ 2026-06-22 14:26:52

●A2606:4700:3031::ac43:c8b22026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

●A2606:4700:3034::6815:550d2026-02-26 → 2026-06-22 · 3 obs

○ 2016-12-23 14:59:14
● 2026-02-26 03:54:48
● 2026-06-22 14:26:52

○A2620:103::192:155:48:932015-08-22 → 2016-09-03 · 4 obs

● 2015-08-22 23:34:54
● 2016-09-03 21:45:36
○ 2016-12-23 14:59:14
○ 2026-06-22 14:26:52

○A2620:103:1:1:192:155:42:932016-12-23 → 2016-12-23 · 4 obs

○ 2016-09-03 21:45:36
● 2016-12-23 14:59:14
○ 2026-02-26 03:54:48
○ 2026-06-22 14:26:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, h.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
linux-admin.com	ns1.ubmdns.com, ns2.ubmdns.com	2 records

✅ Authoritative Response

Server:162.159.1.208

NS records: ns1.ubmdns.com, ns2.ubmdns.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 205ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.85.13, 172.67.200.178`
AAAA	2	`2606:4700:3031::ac43:c8b2, 2606:4700:3034::6815:550d`
NS	2	`ns1.ubmdns.com, ns2.ubmdns.com`
TXT	1	`v=spf1 mx include:spf.ubm-us.net -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ns1.ubmdns.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.ubmdns.com, ns2.ubmdns.com)

Analysis

IP Addresses

linux-admin.com points to the four IP addresses 104.21.85.13, 172.67.200.178, 2606:4700:3031::ac43:c8b2 and 2606:4700:3034::6815:550d.

Among the host names that share IP numbers with linux-admin.com are convergentia.com, mail.borealux.com, cop17-cmp7durban.com and two others.

Name Servers

linux-admin.com has two authoritative name servers — ns1.ubmdns.com and ns2.ubmdns.com.

linux-admin.com has the same name server delegation as a number of other domains, such as wallstreetandtech.com, mddionline.com, fi-activenutrition.com and two more.

Both ns1.ubmdns.com and ns2.ubmdns.com have two IP addresses each. ns1.ubmdns.com resolves to 162.159.0.208 and 2400:cb00:2049:1::a29f:d0; ns2.ubmdns.com resolves to 162.159.1.208 and 2400:cb00:2049:1::a29f:1d0.