realskolen.dk

📜 Historical scan 2026-06-24 05:52:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

realskolen.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 24 June 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.217.249 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by realskolen-dk.mail.protection.outlook.com. The zone is of unknown DNSSEC status, 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 29ms

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 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.217.249	3600s	vps.simpledigital.dk	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	realskolen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::20 2a01:111:f403:ca09::3 2a01:111:f403:ca09::5 52.101.68.10 52.101.68.12 52.101.68.21 52.101.73.4	mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 52.98.149.136
🔶 Autoconfig	178.20.217.249

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 223ms

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

✉️ SPF#

Policy	Record (realskolen.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 2026-10-24 14:06:34

www	185.130.190.68 (AS210939) (address records, no CNAME)
www vs bare domain	Same network realskolen.dk: 185.130.190.68 (AS210939) www.realskolen.dk: 185.130.190.68 (AS210939)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-realskolen-dk._domainkey.holbaekrealskole.onmicrosoft.com	RSA · ~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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

103ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'realskolen.dk/DS/IN': 127.0.0.1#53

🏷️ SOA#

31ms

Field	Value
Serial	2025092501
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 2026-10-24 14:22:52

Field	Value
Registrar	Simply.com A/S
Registered	1998-06-24
Expires	2027-06-30 (246d)

🔗 Same registrant#

2 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
holbaek-realskolen.dk	Punktum dk A/S (direct)
holbaekrealskole.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

29ms

35ms

44ms

AAAA

28ms

TXT

223ms

CAA

74ms

HTTPS

35ms

TLSA

822ms

SOA

31ms

MTA-STS

72ms

DNSSEC

103ms

SRV

54ms

Total

1523ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-24 14:06:34	1925ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-20 21:56:47	1053ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-12 13:21:14	1429ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-02 08:45:12	505ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-01 08:40:03	720ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-27 12:28:24	1484ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-02 14:21:08	1354ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-24 05:52:17 shown	1523ms	4 NS 1 A 1 MX	❓ Unknown
2026-06-22 12:28:40	1187ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 02:22:38	3222ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 18:55:41	1293ms	4 NS 1 A 1 MX	🔓 Insecure