castellum.dk

📜 Historical scan 2026-06-20 07:38:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

castellum.dk is a .dk domain served by 2 nameservers (a.portsdns.se, b.portsdns.net). It was registered on 28 August 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.114.94.2 is hosted by Optimizely AB (AS30811) in Sweden. Mail is handled by castellum-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 54ms

Nameserver	IP addresses	PTR	ASN / ISP
a.portsdns.se	2607:f740:e009::1 45.54.35.101	a.portsdns.se a.portsdns.se	AS63911 NetActuate, Inc AS63911 NetActuate, Inc
b.portsdns.net	2a00:11c0:3d::1 94.16.23.1	b.portsdns.net b.portsdns.net	AS42354 Anexia Cloud Solutions GmbH AS42354 Anexia Cloud Solutions GmbH

🌍 A Records#

1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.114.94.2	600s	—	AS30811	Optimizely AB	217.114.94.0/24	🇸🇪 Sweden	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	castellum-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::1 2a01:111:f403:ca09::5 2a01:111:f403:ca09::f 52.101.68.18 52.101.68.25 52.101.68.36 52.101.73.19	mail-db4pr02cu00204.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as8pr04cu00803.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 → 52.96.182.232

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

14 records 1270ms

TXT Record
_qdrynj9bsa70da7fy64m2rh3ymlansx
2VKESn1KY3b7qMPUyqu/0JrhE+qB8LJoeuHlzygF7cA=
adobe-idp-site-verification=05362fb02375dd2ac97780dd514c0c54c1f675536742bbb8b626b5a331e96f3c
D9fhgoT6mjxypOgzbok6s7wL955Xak8RDXgyJOk4lO6lguokbK+9FQysTJQG4HqLkXPoRGRYB83xrGXSZ8/pWA==
Foxit-domain-verification=a866761f8a3559b0906ef2ceae55558e
globalsign-domain-verification=4tDQ099VR_BAkc45a0rUlz_M9oY-6IRDopVWEPTHyp
globalsign-domain-verification=ZildWk8rCsXI5Se5hSkG1kKqivMPeFhvp0o_t71j4L
google-site-verification=IiZNXArcjlcvBI9v5OJgHwiLiAGR_8mhYDtYtW1__lk
hm447xy7gbd5vnzjst4pny8xvm8y5dpd
MS=ms36481202
PiWqndDr50ZcN115Q07W8pRv5F0JicraiJWISytkj5Y=
SPwuueL9Syq6XcBX6Es6FJ3cegGVdUhqcHEZHbCNAiw=
v=spf1 mx include:spf.protection.outlook.com include:spf.bedrock.lime-technologies.com include:spf-westeu.emailsignatures365.com ~all
vTjyAGyWbWyQaIW543zLv5Dho2xZgxsKmoNZnyh3oBA=

✉️ SPF#

Policy	Record (castellum.dk)
~all (soft fail)	v=spf1 mx include:spf.protection.outlook.com include:spf.bedrock.lime-technologies.com include:spf-westeu.emailsignatures365.com ~all

📨 DMARC#

Policy	Record (_dmarc.castellum.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:fbhejsql@ag.eu.dmarcadvisor.com,mailto:rua@dmarc.portsgroup.com;

📬 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 2026-10-14 11:13:48

www CNAME	www.castellum.dk.dxcloud.episerver.net (all on episerver.net) → 104.18.35.84 172.64.152.172 2606:4700:4404::6812:2354 2a06:98c1:3104::ac40:98ac (AS13335)
www vs bare domain	Different networks castellum.dk: 217.114.94.2 (AS30811) www.castellum.dk: 104.18.35.84 172.64.152.172 2606:4700:4404::6812:2354 2a06:98c1:3104::ac40:98ac (AS13335) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-castellum-dk._domainkey.castellumab.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-castellum-dk._domainkey.castellumab.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: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

79ms

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

🏷️ SOA#

116ms

Field	Value
Serial	2026061600
Primary NS (MNAME)	a.portsdns.se
Responsible (RNAME)	registry@ports.net
Refresh	1800s
Retry	900s
Expire	1814400s
Minimum (neg-cache TTL)	60s

📋 Registration#

WHOIS fetched 2026-10-16 23:59:05

Field	Value
Registrar	Abion AB
Registered	2010-08-28
Expires	2027-08-31 (311d)

🔗 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
havneholmen-atrium.dk	Abion AB
havneholmen-tower.dk	Abion AB

📋 WHOIS#

⏱️ Lookup Timing#

54ms

48ms

47ms

AAAA

195ms

TXT

1270ms

CAA

70ms

HTTPS

321ms

TLSA

4031ms

SOA

116ms

MTA-STS

127ms

DNSSEC

79ms

SRV

1316ms

Total

5650ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 11:13:48	4600ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-13 10:39:46	4580ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-11 08:52:25	4606ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-15 05:41:42	7237ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 20:27:57	5471ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 04:10:36	9307ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-13 20:05:35	17650ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 20:26:25	17657ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-16 11:57:09	17392ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-13 09:38:45	5158ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 16:14:10	4938ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 07:38:55 shown	5650ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 19:51:09	4797ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 19:41:24	4691ms	2 NS 1 A 1 MX	🔒 Secure