linuxdo.org - dns.ninja

`linuxdo.org`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3032::ac43:ddeb^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:3604^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.54.4^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.221.235^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dahlia.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a59^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c059^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dahlia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2059^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dahlia.ns.cloudflare.com`
		A	108.162.192.89^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	172.64.32.89^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	173.245.58.89^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
NS	`marek.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`marek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`marek.ns.cloudflare.com`
		A	108.162.193.202^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	172.64.33.202^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	173.245.59.202^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽³¹⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁵¹⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`openai-domain-verification=dv-Gn5(0x736578)bdYvvsIjqHlMgTuDOH`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.54.4, 172.67.221.235
		IPv6 hints	2606:4700:3032::ac43:ddeb, 2606:4700:3036::6815:3604
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=19, name=cloudflare-ech.com
SOA	`dahlia.ns.cloudflare.com`dns@cloudflare.com serial=2408095765

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1783248236

Subdomains

invite.linuxdo.org

mail.linuxdo.org

Same first word

linuxdo.edu.rs

linuxdo.blog

linuxdo.org

linuxdo.live

linuxdo.de

Similar names

duxilon.it

indoxul.com

luxindo.eu

dinolux.pt

dinolux.de

dinolux.ru

ludonix.ch

dolinux.blogspot.fr

dolinux.blogspot.com

luxindo.net

ludonix.at

dolinux.com.br

luxodin.com

luxodin.de

dulonix.com

luxidon.com

dolinux.com

duolinx.com

DNS History

15 records (9 active, 6 former)

●NSdahlia.ns.cloudflare.com2026-02-15 → 2026-07-05 · 2 obs

● 2026-02-15 18:44:08
● 2026-07-05 11:21:34

●NSmarek.ns.cloudflare.com2026-02-15 → 2026-07-05 · 2 obs

● 2026-02-15 18:44:08
● 2026-07-05 11:21:34

●MXroute1.mx.cloudflare.net2026-02-15 → 2026-07-05 · 2 obs

● 2026-02-15 18:44:08
● 2026-07-05 11:21:34

●MXroute2.mx.cloudflare.net2026-02-15 → 2026-07-05 · 2 obs

● 2026-02-15 18:44:08
● 2026-07-05 11:21:34

●MXroute3.mx.cloudflare.net2026-02-15 → 2026-07-05 · 2 obs

● 2026-02-15 18:44:08
● 2026-07-05 11:21:34

●A104.21.54.42026-02-15 → 2026-07-05 · 15 obs

● 2026-02-15 18:44:08
● 2026-02-18 13:58:30
○ 2026-02-20 17:37:02
○ 2026-03-03 23:35:30
● 2026-03-11 21:25:32
● 2026-05-03 07:27:10
○ 2026-05-04 22:10:32
● 2026-05-15 01:09:14
● 2026-05-23 02:30:04
○ 2026-05-24 01:13:08
● 2026-05-27 12:42:26
○ 2026-05-27 13:57:58
● 2026-06-06 14:29:54
○ 2026-06-26 13:21:08
● 2026-07-05 11:21:34

●A172.67.221.2352026-02-15 → 2026-07-05 · 15 obs

○A188.114.96.02026-02-20 → 2026-06-26 · 14 obs

○ 2026-02-18 13:58:30
● 2026-02-20 17:37:02
● 2026-03-03 23:35:30
○ 2026-03-11 21:25:32
○ 2026-05-03 07:27:10
● 2026-05-04 22:10:32
○ 2026-05-15 01:09:14
○ 2026-05-23 02:30:04
● 2026-05-24 01:13:08
○ 2026-05-27 12:42:26
● 2026-05-27 13:57:58
○ 2026-06-06 14:29:54
● 2026-06-26 13:21:08
○ 2026-07-05 11:21:34

○A188.114.97.02026-02-20 → 2026-06-26 · 14 obs

○A2606:4700:3031::ac43:ddeb2026-04-01 → 2026-06-06 · 12 obs

○ 2026-03-11 21:25:32
● 2026-04-01 07:29:12
● 2026-05-03 07:27:10
○ 2026-05-04 22:10:32
● 2026-05-15 01:09:14
● 2026-05-23 02:30:04
○ 2026-05-24 01:13:08
● 2026-05-27 12:42:26
○ 2026-05-27 13:57:58
● 2026-06-06 14:29:54
○ 2026-06-23 00:24:32
○ 2026-07-05 11:21:34

●A2606:4700:3032::ac43:ddeb2026-06-23 → 2026-07-05 · 4 obs

○ 2026-06-06 14:29:54
● 2026-06-23 00:24:32
○ 2026-06-26 13:21:08
● 2026-07-05 11:21:34

○A2606:4700:3035::6815:36042026-04-01 → 2026-06-06 · 12 obs

●A2606:4700:3036::6815:36042026-06-23 → 2026-07-05 · 4 obs

○ 2026-06-06 14:29:54
● 2026-06-23 00:24:32
○ 2026-06-26 13:21:08
● 2026-07-05 11:21:34

○A2a06:98c1:3120::2026-05-04 → 2026-06-26 · 10 obs

○ 2026-05-03 07:27:10
● 2026-05-04 22:10:32
○ 2026-05-15 01:09:14
○ 2026-05-23 02:30:04
● 2026-05-24 01:13:08
○ 2026-05-27 12:42:26
● 2026-05-27 13:57:58
○ 2026-06-06 14:29:54
● 2026-06-26 13:21:08
○ 2026-07-05 11:21:34

○A2a06:98c1:3121::2026-05-04 → 2026-06-26 · 10 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
linuxdo.org	marek.ns.cloudflare.com, dahlia.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.202

NS records: marek.ns.cloudflare.com, dahlia.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 367ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.54.4, 172.67.221.235`
AAAA	2	`2606:4700:3032::ac43:ddeb, 2606:4700:3036::6815:3604`
NS	2	`dahlia.ns.cloudflare.com, marek.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 12), route1.mx.cloudflare.net (pri: 31)...`
TXT	2	`openai-domain-verification=dv-Gn5(0x736578)bdYv, v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dahlia.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

The parent domain of invite.linuxdo.org and mail.linuxdo.org is linuxdo.org.

IP Addresses

linuxdo.org resolves to four IP addresses: 104.21.54.4, 172.67.221.235, 2606:4700:3032::ac43:ddeb and 2606:4700:3036::6815:3604.

Among the host names that share IP numbers with linuxdo.org are deltacure2022.com, voiceweb.eu, radiolog.nu and two others.

Name Servers

linuxdo.org is delegated to two name servers: dahlia.ns.cloudflare.com and marek.ns.cloudflare.com.

linuxdo.org has the same name server delegation as a number of other domains, such as webphasedigital.com, zhile.io, loftno.com and two more.

linuxdo.org shares at least some of its name servers with other domains, including nr1yaxp29ukpyuhb0zyt0ujxahjlwn.pages.dev, a(0x736578)book.com, kef.jp and two others.

These name servers are frequently paired with the name servers jaime.ns.cloudflare.com, meg.ns.cloudflare.com and sullivan.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

dahlia.ns.cloudflare.com resolves to 108.162.192.89, 172.64.32.89, 173.245.58.89 and 3 other IP addresses.

marek.ns.cloudflare.com resolves to 108.162.193.202, 172.64.33.202, 173.245.59.202 and 3 other IP addresses.

Mail Servers

linuxdo.org is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

linuxdo.org shares at least some of its mail servers with other domains — for example antiproxies.com, 24-124-245-210-reverse.digipower.vn, lpkt.cn and two more.

Host names resolving to 6 IP numbers:

route1.mx.cloudflare.net resolves to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 other IP addresses.

route2.mx.cloudflare.net resolves to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 other IP addresses.

route3.mx.cloudflare.net resolves to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 other IP addresses.