istuen.dk

📜 Historical scan 2026-09-27 09:51:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

istuen.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 16 December 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.5 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by istuen-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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#

4 records 73ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 2035ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.5	3598s	linux171.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	istuen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::e 2a01:111:f403:ca09::26 2a01:111:f403:ca21::8 52.101.185.21 52.101.68.25 52.101.68.39 52.101.91.156	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-maspr04cu00104.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 → 52.98.154.152
🔶 Autoconfig	93.191.156.5

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 143ms

TXT Record
MS=ms47447539
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (istuen.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 15:32:37

www	93.191.156.5 (AS48854) (address records, no CNAME)
www vs bare domain	Same network istuen.dk: 93.191.156.5 (AS48854) www.istuen.dk: 93.191.156.5 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

72ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026060105
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-07 20:59:50

Field	Value
Registrar	Simply.com A/S
Registered	2006-12-16
Expires	2026-12-31 (67d)

📋 WHOIS#

⏱️ Lookup Timing#

73ms

2035ms

47ms

AAAA

34ms

TXT

143ms

CAA

50ms

HTTPS

48ms

TLSA

313ms

SOA

0ms

MTA-STS

55ms

DNSSEC

72ms

SRV

58ms

Total

2721ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 15:32:37	508ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-01 10:28:31	1099ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-27 09:51:40 shown	2721ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-19 00:17:51	942ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-03 04:13:59	9712ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-28 04:13:48	1713ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-25 17:58:05	1547ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 07:07:27	1168ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 21:04:18	3624ms	4 NS 1 A 1 MX	🔒 Secure