`backuphuset.dk`

DNSSEC	🔒 Signed (DS record present)
A	185.21.41.231^{🇩🇰 team-blue-denmark185.21.40.0/22 ZITCOM A/S}
		PTR	`linux30.curanet.dk`
NS	`ns1.123hotel.dk` ⭐
		A	2a02:2339:4006:108::123^{🇩🇰 team-blue-denmark2a02:2339:4000::/34}
			PTR	`ns1.curanet.dk`
		A	185.25.141.12^{🇩🇰 team-blue-denmark185.25.141.0/24 Zitcom A/S}
			PTR	`ns1.curanet.dk`
NS	`ns2.123hotel.dk`
		A	2a02:2339:1:10f::123:123^{🇩🇰 team-blue-denmark2a02:2339::/36}
			PTR	`ns2.curanet.dk`
		A	91.197.248.75^{🇩🇰 team-blue-denmark91.197.248.0/22}
			PTR	`ns2.curanet.dk`
MX	`mx1.onlinemail.io` ⭐
		A	185.21.42.12^{🇩🇰 team-blue-denmark185.21.40.0/22 ZITCOM A/S}
			PTR	`mx1.onlinemail.io`
MX	`mx2.onlinemail.io`⁽²⁰⁾
		A	46.36.208.16^{🇩🇰 team-blue-denmark46.36.208.0/21}
			PTR	`mx2.onlinemail.io`
TXT	`v=spf1 include:spf.onlinemail.io ?all`
SOA	`ns1.123hotel.dk`hostmaster@curanet.dk 2021-11-18 #1

`dk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`b.nic.dk` ⭐
	NS	`c.nic.dk`
	NS	`h.nic.dk`
	NS	`l.nic.dk`
	NS	`s.nic.dk`
	NS	`t.nic.dk`
	TXT	`DK zone updateEpoch 1778434381localtime Sun May 10 19:33:01 2026gmtime Sun Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1778434381

Same first word

backuphuset.dk

DNS History

8 records (5 active, 3 former)

●NSns1.123hotel.dk2015-06-18 → 2026-05-10 · 2 obs

● 2015-06-18 11:19:16
● 2026-05-10 17:43:10

●NSns2.123hotel.dk2015-06-18 → 2026-05-10 · 2 obs

● 2015-06-18 11:19:16
● 2026-05-10 17:43:10

○MXbackup-mx.zitcom.dk2015-06-18 → 2017-04-08 · 4 obs

● 2015-06-18 11:19:16
● 2017-04-08 10:08:40
○ 2020-04-04 17:14:26
○ 2026-05-10 17:43:10

○MXmail.backuphuset.dk2015-06-18 → 2017-04-08 · 4 obs

● 2015-06-18 11:19:16
● 2017-04-08 10:08:40
○ 2020-04-04 17:14:26
○ 2026-05-10 17:43:10

●MXmx1.onlinemail.io2020-04-04 → 2026-05-10 · 3 obs

○ 2017-04-08 10:08:40
● 2020-04-04 17:14:26
● 2026-05-10 17:43:10

●MXmx2.onlinemail.io2020-04-04 → 2026-05-10 · 3 obs

○ 2017-04-08 10:08:40
● 2020-04-04 17:14:26
● 2026-05-10 17:43:10

○A185.21.40.42015-06-18 → 2020-04-04 · 4 obs

● 2015-06-18 11:19:16
● 2020-04-04 17:14:26
○ 2026-04-05 01:15:30
○ 2026-05-10 17:43:10

●A185.21.41.2312026-04-05 → 2026-05-10 · 3 obs

○ 2020-04-04 17:14:26
● 2026-04-05 01:15:30
● 2026-05-10 17:43:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk...	12 records
backuphuset.dk	ns1.123hotel.dk, ns2.123hotel.dk	4 records

✅ Authoritative Response

Server:185.25.141.12

NS records: ns1.123hotel.dk, ns2.123hotel.dk

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 652ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.21.41.231`
NS	2	`ns2.123hotel.dk, ns1.123hotel.dk`
MX	2	`mx1.onlinemail.io (pri: 10), mx2.onlinemail.io (pri: 20)`
TXT	1	`v=spf1 include:spf.onlinemail.io ?all`
SOA	1	`ns1.123hotel.dk hostmaster.curanet.dk`

📌 Glue Records Collected

Total: 16

In-bailiwick: 12 (b.nic.dk, b.nic.dk, h.nic.dk...)

Out-of-bailiwick: 4 (ns1.123hotel.dk, ns2.123hotel.dk, ns1.123hotel.dk...)

Analysis

IP Addresses

backuphuset.dk resolves to a single IP: 185.21.41.231.

Other host names, for instance ldts.dk, mirovin.dk, autocon.dk, koksmastaren.se and arnoldp.dk share IP numbers with backuphuset.dk.

Name Servers

backuphuset.dk has two name servers: ns1.123hotel.dk and ns2.123hotel.dk.

backuphuset.dk shares the same name server setup as other domains, for example sondervig.com, rahbek-webdesign.dk, orsolino.dk, mynote.dk and mobel-design.eu.

backuphuset.dk shares some name servers with other domains, for example gardinhylden.dk, 123lx.dk, erhvervsmaegler.com, lmmail.dk and travel2copenhagen.com.

These name servers are commonly used together with ns1.curanet.dk and ns2.curanet.dk.

Host names with two IP numbers:

ns1.123hotel.dk points to: 2a02:2339:4006:108::123 and 185.25.141.12; ns2.123hotel.dk points to: 2a02:2339:1:10f::123:123 and 91.197.248.75.

Mail Servers

backuphuset.dk is served by two mail servers: mx1.onlinemail.io and mx2.onlinemail.io.

backuphuset.dk shares the mail server setup with other domains, for example labano.dk, scandesigns.dk, holsted-st-vand.dk, youniq.dk and orkestermidtvest.dk.

backuphuset.dk shares mail servers with other domains at least partially, for example verdensboern.dk, vitalt.dk, globus.dk and bach-nielsen.dk.

Host names with a single IP:

mx1.onlinemail.io points to 185.21.42.12

mx2.onlinemail.io points to 46.36.208.16

backuphuset.dk - robtex.com

backuphuset.dk

dk