`smsworking.dk`

DNSSEC	🔒 Signed (DS record present)
A	185.21.41.69^{🇩🇰 team-blue-denmark185.21.40.0/22 ZITCOM A/S}
		PTR	`linux16.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 1774712701localtime Sat Mar 28 16:45:01 2026gmtime Sat Ma...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1774712701

Subdomains

mail.smsworking.dk

Same first word

smsworking.dk

DNS History

8 records (5 active, 3 former)

●NSns1.123hotel.dk2015-07-20 → 2026-03-28 · 2 obs

● 2015-07-20 20:51:04
● 2026-03-28 15:52:18

●NSns2.123hotel.dk2015-07-20 → 2026-03-28 · 2 obs

● 2015-07-20 20:51:04
● 2026-03-28 15:52:18

○MXbackup-mx.zitcom.dk2015-07-20 → 2017-02-14 · 4 obs

● 2015-07-20 20:51:04
● 2017-02-14 10:04:10
○ 2019-12-21 04:27:22
○ 2026-03-28 15:52:18

○MXmail.smsworking.dk2015-07-20 → 2017-02-14 · 4 obs

● 2015-07-20 20:51:04
● 2017-02-14 10:04:10
○ 2019-12-21 04:27:22
○ 2026-03-28 15:52:18

●MXmx1.onlinemail.io2019-12-21 → 2026-03-28 · 3 obs

○ 2017-02-14 10:04:10
● 2019-12-21 04:27:22
● 2026-03-28 15:52:18

●MXmx2.onlinemail.io2019-12-21 → 2026-03-28 · 3 obs

○ 2017-02-14 10:04:10
● 2019-12-21 04:27:22
● 2026-03-28 15:52:18

●A185.21.41.692015-11-27 → 2026-03-28 · 3 obs

○ 2015-07-20 20:51:04
● 2015-11-27 12:51:42
● 2026-03-28 15:52:18

○A94.231.108.282015-07-20 → 2015-07-20 · 3 obs

● 2015-07-20 20:51:04
○ 2015-11-27 12:51:42
○ 2026-03-28 15:52:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...	12 records
smsworking.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: 643ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.21.41.69`
NS	2	`ns1.123hotel.dk, ns2.123hotel.dk`
MX	2	`mx2.onlinemail.io (pri: 20), mx1.onlinemail.io (pri: 10)`
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, c.nic.dk, h.nic.dk...)

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

Analysis

Hierarchy

smsworking.dk is a parent of mail.smsworking.dk.

IP Addresses

smsworking.dk points to a single IP number: 185.21.41.69.

Other host names, for instance vangved.dk, colourchange.dk, gel-top.dk, consol.dk and sfm.dk share IP numbers with smsworking.dk.

Name Servers

Delegation for smsworking.dk rests with two name servers, ns1.123hotel.dk and ns2.123hotel.dk.

smsworking.dk shares the same name server setup as other domains, including directit.dk, primosoft.dk, cafe-mathisen.dk, kangamiut.dk and bmdd.org.

smsworking.dk at least partially shares name servers with other domains, for instance lmhosting.dk, hjoerring-revyen.dk, iteffect.dk, albertslundif.dk and fluefanger.dk.

These name servers are commonly used 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

smsworking.dk is handled by two mail servers: mx1.onlinemail.io and mx2.onlinemail.io.

smsworking.dk uses the same mail server configuration as other domains, such as vpi.dk, studluft.dk, friisbilerhelsinge.dk, skrotbildanmark.dk and krautwalds.dk.

smsworking.dk shares some mail servers with other domains at least partially, for example og-optik.dk.

Host names with one IP number: mx1.onlinemail.io points to 185.21.42.12; mx2.onlinemail.io points to 46.36.208.16.

smsworking.dk - robtex.com

smsworking.dk

dk