superusers.dk

📜 Historical scan 2026-06-18 14:32:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

superusers.dk is a .dk domain served by 2 nameservers (pdns03.domaincontrol.com, pdns04.domaincontrol.com). It was registered on 20 May 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by superusers-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 75ms

Nameserver	IP addresses	PTR	ASN / ISP
pdns03.domaincontrol.com	2603:5:21f0::33 97.74.111.51	pdns03.domaincontrol.com pdns03.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH
pdns04.domaincontrol.com	173.201.79.51 2603:5:22f0::33	pdns04.domaincontrol.com pdns04.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH

🌍 A Records#

1 records 69ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.150.1.1	600s	—	AS16509	Amazon.com, Inc.	216.150.1.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	900s	superusers-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::c 2a01:111:f403:ca09:: 2a01:111:f403:ca09::f 52.101.68.16 52.101.68.36 52.101.68.8 52.101.73.2	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 169ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

7 records 241ms

TXT Record
_globalsign-domain-verification=D-NcWgmkQ2ZnHYhLAi2RjY6Skgq1fwEnU29UJ--0Ek
5gcssfjlgjeoll2898hshjoopi
klaviyo-site-verification=RDvZL8
klaviyo-site-verification=WMVfXf
MS=B835433698428969061955F6AF85A8E76EAD17D9
puf20riv62gj92enl2mctit1ca
v=spf1 ip4:212.98.70.130 ip4:87.104.223.236 include:spf.protection.outlook.com include:servers.mcsv.net -all

✉️ SPF#

Policy	Record (superusers.dk)
-all (hard fail)	v=spf1 ip4:212.98.70.130 ip4:87.104.223.236 include:spf.protection.outlook.com include:servers.mcsv.net -all

📨 DMARC#

Policy	Record (_dmarc.superusers.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@superusers.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

3 records 74ms

Flags	Tag	Value
0	issue	globalsign.com
0	issue	letsencrypt.org
0	issuewild	globalsign.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 16:59:02

www CNAME	7cc43fefc29f49fe.vercel-dns-016.com (all on vercel-dns-016.com) → 216.150.1.193 216.150.16.193 (AS16509)
www vs bare domain	Same network superusers.dk: 216.150.1.1 (AS16509) www.superusers.dk: 216.150.1.193 216.150.16.193 (AS16509)
Wildcard	No

✍️ DKIM keys#

3 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-superusers-dk._domainkey.superusersdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-superusers-dk._domainkey.superusersdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

84ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

77ms

Field	Value
Serial	2026061701
Primary NS (MNAME)	pdns03.domaincontrol.com
Responsible (RNAME)	dns@jomax.net
Refresh	300s
Retry	600s
Expire	1814400s
Minimum (neg-cache TTL)	900s

📋 Registration#

WHOIS fetched 2026-10-12 14:37:24

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-05-20
Expires	2030-06-30 (1348d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
kursus-planen.dk	Punktum dk A/S (direct)
kursusplanen.dk	Punktum dk A/S (direct)
skillshouse.dk	Punktum dk A/S (direct)
skillslab.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

75ms

69ms

60ms

AAAA

60ms

TXT

241ms

CAA

74ms

HTTPS

77ms

TLSA

1081ms

SOA

77ms

MTA-STS

60ms

DNSSEC

84ms

SRV

169ms

Total

2222ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 16:59:02	1247ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-07 23:14:44	1407ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-03 11:03:44	5027ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-30 10:51:47	1054ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-22 23:06:57	3555ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 17:01:19	3143ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-19 16:26:59	10609ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-03 14:50:20	5697ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-29 10:11:41	838ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-20 18:36:17	2589ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 14:32:42 shown	2222ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 02:53:08	15760ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 00:18:09	2332ms	2 NS 1 A 1 MX	🔓 Insecure