gclas.dk

📜 Historical scan 2026-06-27 22:01:01 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gclas.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 9 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by gclas-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#

3 records 238ms

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

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 313ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	gclas-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::5 2a01:111:f403:ca04::c 2a01:111:f403:ca09::d 52.101.68.21 52.101.68.32 52.101.68.5 52.101.73.24	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00300.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 501ms

TXT Record
MS=ms25383019
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (gclas.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 2026-10-13 09:09:29

www	NXDOMAIN
www vs bare domain	Neither resolves gclas.dk: no address www.gclas.dk: no address
Wildcard	No
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

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-gclas-dk._domainkey.itsdanmark.d-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-gclas-dk._domainkey.itsdanmark.d-v1.dkim.mail.microsoft	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#

470ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

301ms

Field	Value
Serial	2026040906
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 2026-10-17 01:43:41

Field	Value
Registrar	Simply.com A/S
Registered	2026-04-09
Expires	2027-04-08 (172d)

🔗 Same registrant#

3 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
glcas.dk	Simply.com A/S
its-danmark.dk	Simply.com A/S
lmsm.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

238ms

310ms

313ms

AAAA

333ms

TXT

501ms

CAA

259ms

HTTPS

331ms

TLSA

1054ms

SOA

301ms

MTA-STS

440ms

DNSSEC

470ms

SRV

395ms

Total

2398ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 09:09:29	1867ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-03 16:34:16	1051ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-30 16:11:53	825ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-23 16:29:17	1333ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-27 22:01:01 shown	2398ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-26 02:45:11	1210ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-23 23:26:25	1118ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 10:35:45	1268ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-17 10:24:21	822ms	3 NS 0 A 1 MX	🔒 Secure