der.dk

📜 Historical scan 2026-10-01 05:48:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

der.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 23 December 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.105.216.38 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by der-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#

4 records 157ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.eurodns.com	199.167.66.107 2610:1c8:b002::107	ns1.eurodns.com ns1.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns2.eurodns.com	104.37.178.107 2610:1c8:b001::107	ns2.eurodns.com ns2.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns3.eurodns.com	199.167.66.108 2610:1c8:b002::108	ns3.eurodns.com ns3.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns4.eurodns.com	104.37.178.108 2610:1c8:b001::108	ns4.eurodns.com ns4.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC

🌍 A Records#

1 records 104ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.105.216.38	3600s	—	AS8075	Microsoft Corporation	20.64.0.0/10	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 126ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	der-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca48::10 2a01:111:f403:ca48::a 52.101.103.143 52.101.103.162 52.101.68.15 52.101.68.29	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-dbapr03cu00105.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 255ms

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

📝 TXT Records#

11 records 585ms

TXT Record
_7la4rdjqj2ru9wpmhk5vgvnyyzz6edy
3c-live.3c-live.p.azurewebsites.net
apple-domain-verification=TM3DCM1wxLkrWkga
facebook-domain-verification=hcgwoki79eu0cec49epzdhrntom8qd
google-site-verification=KJNPGsJoIFG-GuqdVGcsEldKRWBRcQsGzfSySkcNsdk
MS=ms97551464
o46VgX/pqlck9hTM5YCG7p1sipyRjYeRIjxa65NfD0k=
q0nqzphR32/tuxewwHFyveAeIc5BNI30L3xzFhLGqSc=
v=spf1 ip4:194.182.232.130 ip4:176.22.250.3 ip4:13.80.28.9 a:alternativ1.3cgroups.com include:spf.protection.outlook.com ?include:trustpilotservice.com include:_spf.signicat.cloud -all
Y3V/NkUS1HcAbqL2hVSTifs155NUL+LpshqvygPozGE32/i1hUXUHvAC+vtzaESlNcYQGCoN+vcP/jjTEQwJcw==
ZCLdXvV+2ytGMB/mLHvAUcQBMoI56jJHRQjq+DOClUc=

✉️ SPF#

Policy	Record (der.dk)
-all (hard fail)	v=spf1 ip4:194.182.232.130 ip4:176.22.250.3 ip4:13.80.28.9 a:alternativ1.3cgroups.com include:spf.protection.outlook.com ?include:trustpilotservice.com include:_spf.signicat.cloud -all

📨 DMARC#

Policy	Record (_dmarc.der.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email

📬 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 2026-10-11 10:38:01

www CNAME	app-leasyweb-prod-01.azurewebsites.net (all on azurewebsites.net) → 20.105.216.38 (AS8075)
www vs bare domain	Same network der.dk: 20.105.216.38 (AS8075) www.der.dk: 20.105.216.38 (AS8075)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-der-dk._domainkey.3cretail.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#

365ms

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

🏷️ SOA#

152ms

Field	Value
Serial	2026032334
Primary NS (MNAME)	ns1.eurodns.com
Responsible (RNAME)	hostmaster@eurodns.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-06 07:40:39

Field	Value
Registrar	Eurodns S.A
Registered	1996-12-23
Expires	2026-12-31 (74d)

📋 WHOIS#

⏱️ Lookup Timing#

157ms

104ms

126ms

AAAA

138ms

TXT

585ms

CAA

170ms

HTTPS

152ms

TLSA

1680ms

SOA

152ms

MTA-STS

188ms

DNSSEC

365ms

SRV

255ms

Total

3954ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 10:38:01	1264ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-10 10:05:23	1494ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-06 07:19:44	1348ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-01 05:48:33 shown	3954ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-30 05:40:29	740ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-23 00:53:22	1534ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-04 20:37:44	754ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-25 15:34:40	1095ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-17 17:48:57	3312ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-16 04:19:38	2115ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-03 10:42:22	2206ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-12 09:02:05	2060ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-23 03:01:34	1539ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-22 00:48:43	1176ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 04:09:30	1005ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-17 02:05:21	759ms	4 NS 1 A 1 MX	🔒 Secure